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A new subfamily classification of the Leguminosae based on a taxonomically comprehensive phylogeny

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The classification of the legume family proposed here addresses the long-known non-monophyly of the traditionally recognised subfamily Caesalpinioideae, by recognising six robustly supported monophyletic subfamilies. This new classification uses as its framework the most comprehensive phylogenetic analyses of legumes to date, based on plastid matK gene sequences, and including near-complete sampling of genera (698 of the currently recognised 765 genera) and ca. 20% (3696) of known species. The matK gene region has been the most widely sequenced across the legumes, and in most legume lineages, this gene region is sufficiently variable to yield well-supported clades. This analysis resolves the same major clades as in other phylogenies of whole plastid and nuclear gene sets (with much sparser taxon sampling). Our analysis improves upon previous studies that have used large phylogenies of the Leguminosae for addressing evolutionary questions, because it maximises generic sampling and provides a phylogenetic tree that is based on a fully curated set of sequences that are vouchered and taxonomically validated. The phylogenetic trees obtained and the underlying data are available to browse and download, facilitating subsequent analyses that require evolutionary trees. Here we propose a new community-endorsed classification of the family that reflects the phylogenetic structure that is consistently resolved and recognises six subfamilies in Leguminosae: a recircumscribed Caesalpinioideae DC., Cercidoideae Legume Phylogeny Working Group (stat. nov.), Detarioideae Burmeist., Dialioideae Legume Phylogeny Working Group (stat. nov.), Duparquetioideae Legume Phylogeny Working Group (stat. nov.), and Papilionoideae DC. The traditionally recognised subfamily Mimosoideae is a distinct clade nested within the recircumscribed Caesalpinioideae and is referred to informally as the mimosoid clade pending a forthcoming formal tribal and/or clade-based classification of the new Caesalpinioideae. We provide a key for subfamily identification, descriptions with diagnostic charactertistics for the subfamilies, figures illustrating their floral and fruit diversity, and lists of genera by subfamily. This new classification of Leguminosae represents a consensus view of the international legume systematics community; it invokes both compromise and practicality of use.
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LPWG Phylogeny and classification of the Leguminosae
44
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A new subfamily classification of the Leguminosae based on
a taxonomically comprehensive phylogeny
The Legume Phylogeny Working Group (LPWG)

        
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   matK

Nasim Azani,1 Marielle Babineau,2* C. Donovan Bailey,3* Hannah Banks,4 Ariane R. Barbosa,5* Rafael
Barbosa Pinto,6* James S. Boatwright,7* Leonardo M. Borges,8* Gillian K. Brown,9* Anne Bruneau,2§*
Elisa Candido,6* Domingos Cardoso,10§* Kuo-Fang Chung,11* Ruth P. Clark,4 Adilva de S. Conceição,12*
Michael Crisp,13* Paloma Cubas,14* Alfonso Delgado-Salinas,15 Kyle G. Dexter,16* Jeff J. Doyle,17 Jérôme
Duminil,18* Ashley N. Egan,19* Manuel de la Estrella,4§* Marcus J. Falcão,20 Dmitry A. Filatov,21* Ana
Paula Fortuna-Perez,22* Renée H. Fortunato,23 Edeline Gagnon,2* Peter Gasson,4 Juliana Gastaldello
Rando,24* Ana Maria Goulart de Azevedo Tozzi,6 Bee Gunn,13* David Harris,25 Elspeth Haston,25 Julie A.
Hawkins,26* Patrick S. Herendeen,27§ Colin E. Hughes,28§* João R.V. Iganci,29* Firouzeh Javadi,30* Sheku
Alfred Kanu,31 Shahrokh Kazempour-Osaloo,32* Geoffrey C. Kite,4 Bente B. Klitgaard,4§ Fábio J.
Kochanovski,6 Erik J.M. Koenen,28§* Lynsey Kovar,3* Matt Lavin,33* Marianne le Roux,34 Gwilym P. Lewis,4
§
Haroldo C. de Lima,20 Maria Cristina López-Roberts,5* Barbara Mackinder,25§* Vitor Hugo Maia,35*
Valéry Malécot,36 Vidal F. Mansano,20* Brigitte Marazzi,37* Sawai Mattapha,26* Joseph T. Miller,38 Chika
Mitsuyuki,39* Tania Moura,40* Daniel J. Murphy,41 Madhugiri Nageswara-Rao,3* Bruno Nevado,21* Danilo
Neves,4* Dario I. Ojeda,18 R. Toby Pennington,25§* Darién E. Prado,42 Gerhard Prenner,4 Luciano Paganucci
de Queiroz,5§* Gustavo Ramos,10 Fabiana L. Ranzato Filardi,20* Pétala G. Ribeiro,5 María de Lourdes
Rico-Arce,4 Michael J. Sanderson,43 Juliana Santos-Silva,12* Wallace M.B. São-Mateus,44* Marcos J.S.
Silva,45* Marcelo F. Simon,46* Carole Sinou,2§* Cristiane Snak,5* Élvia R. de Souza,12* Janet Sprent,47 Kelly
P. Steele,48* Julia E. Steier,49* Royce Steeves,2* Charles H. Stirton,50 Shuichiro Tagane,39* Benjamin M.
Torke,51* Hironori Toyama,39* Daiane Trabuco da Cruz,5* Mohammad Vatanparast,19* Jan J. Wieringa,52§*
Michael Wink,53* Martin F. Wojciechowski,49§* Tetsukazu Yahara,39* Tingshuang Yi54 & Erin Zimmerman2
  Department of Plant Science, University of Tehran, Iran
  Institut de Recherche en Biologie Végétale and Département de Sciences Biologiques, Université de Montréal, Canada
3 Department of Biology, New Mexico State University, Las Cruces, U.S.A.
4 Royal Botanic Gardens, Kew, Richmond, Surrey, U.K.
5 Departamento Ciências Biológicas, Universidade Estadual de Feira de Santana, Brazil
6 Departamento de Biologia Vegetal, Universidade Estadual de Campinas, Brazil
  Department of Biodiversity and Conservation Biology, University of the Western Cape, Cape Town, South Africa
8 Departamento de Botânica, Universidade Federal de São Carlos, Brazil
9 School of BioSciences, University of Melbourne, Australia  Queensland Herbarium, Toowong, Australia
Instituto de Biologia, Universidade Federal da Bahia, Salvador, Brazil
School of Forestry and Resource Conservation, National Taiwan University, Taiwan
Departamento de Educação, Campus VIII, Universidade do Estado da Bahia, Paulo Afonso, Brazil
Research School of Biology, The Australian National University, Acton, Australia
Departamento de Biología Vegetal II, Universidad Complutense, Madrid, Spain
Instituto de Biología – Botánica, Universidad Nacional Autónoma de México, México
School of GeoSciences, University of Edinburgh, U.K.
Plant Biology Department, Cornell University, Ithaca, New York, U.S.A.
Service Évolution Biologique et Écologie, Université Libre de Bruxelles, Belgium
Department of Botany, Smithsonian Institution, National Museum of Natural History, Washington D.C., U.S.A.
Instituto de Pesquisas, Jardim Botânico do Rio de Janeiro, Brazil
Department of Plant Sciences, University of Oxford, U.K.

Version of Record
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66   : 44
LPWG Phylogeny and classification of the Leguminosae
45
Departamento de Botânica, Universidade Estadual Paulista, Botucatu, São Paulo, Brazil
Instituto de Recursos Biológicos, CIRN-INTA, CONICET & University of Morón, Buenos Aires, Argentina
Ciências Ambientais, Universidade Federal do Oeste da Bahia, Barreiras, Brazil
Royal Botanic Gardens, Edinburgh, U.K.
School of Biological Sciences, University of Reading, U.K.
Chicago Botanic Garden, Glencoe, Illinois, U.S.A.
 Department of Systematic and Evolutionary Botany, University of Zurich, Switzerland
Departamento de Botânica, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
30 Institute of Decision Science for a Sustainable Society, Kyushu University, Fukuoka, Japan
Department of Agriculture and Animal Health, University of South Africa, South Africa
Department of Plant Biology, Tarbiat Modares University, Tehran, Iran
33 Plant Sciences & Plant Pathology, Montana State University, Bozeman, Montana, U.S.A.
34 South African National Biodiversity Institute, Silverton, South Africa  Department of Botany and Plant Biotechnology,
University of Johannesburg, South Africa
35 Departamento de Biologia, Pontifícia Universidade Católica do Rio de Janeiro, Brazil
36 Agrocampus-Ouest, INRA, Université d’Angers, France
Museo Cantonale di Storia Naturale, Lugano, Switzerland
38 Office of International Science and Engineering, National Science Foundation, Arlington, Virginia, U.S.A.
39 Department of Biology, Kyushu University, Fukuoka, Japan
40 Missouri Botanical Garden, Saint Louis, Missouri, U.S.A.
Plant Sciences and Biodiversity, Royal Botanic Gardens Victoria, Melbourne, Australia
Botánica, IICAR-CONICET, Facultad de Ciencias Agrarias, Universidad Nacional de Rosario, Zavalla, Argentina
43 Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, Arizona, U.S.A.
44 Sistemática e Evolução, Universidade Federal do Rio Grande do Norte, Brazil
45 Departamento de Botânica, Instituto de Ciências Biológicas, Universidade Federal de Goiás, Brazil
46 Embrapa Recursos Geneticos e Biotecnologia, Brasília, Brazil
Department of Plant Sciences, University of Dundee, U.K.
48 Faculty of Science and Mathematics, Arizona State University Polytechnic, Mesa, Arizona, U.S.A.
49 School of Life Sciences, Arizona State University, Tempe, Arizona, U.S.A.
50 Department of Biological Sciences, Bolus Herbarium, University of Cape Town, Rondebosch, South Africa
Institute of Systematic Botany, The New York Botanical Garden, Bronx, New York, U.S.A.
Naturalis Biodiversity Center, Leiden, The Netherlands
53 Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Germany
54 Kunming Institute of Botany, Chinese Academy of Sciences, China
 Anne Bruneau, anne.bruneau@umontreal.ca
DOI  .3
Abstract

 
matK
 3696
matK







               
     
 





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TAX ON
66   : 44
LPWG Phylogeny and classification of the Leguminosae
46
From arctic circle to tropics, desert to pergola, bacteria to
plough, field to mouth, and legend to science, Leguminosae invest
our lives, and a feeble backwash seeps through our universities.
We wait that treatise which will quicken the herbarium into the
living tree of phylogeny. 
A general system of classif ication that is reasonably natural,
mnemonic and traditional is likely to be most useful for most pur-
poses. 
Nutritious seeds for a sustainable future —  


INTRODUCTION
     
          
     

    


     

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       
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  
Keywords

matK
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66   : 44
LPWG Phylogeny and classification of the Leguminosae
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
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




 
  

  



       




 

THE NEW SUBFAMILY CLASSIFICATION
    

 
   
   



     
   

   





  

     

    




  
 







  

  
   

  
Prodromus    




  


Families
of flowering plants  Genera of flowering plants

   



Advances in legume systematics 


  


 

    




    
    



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
   
         
  

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

      

     
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66   : 44
LPWG Phylogeny and classification of the Leguminosae
48
Fig. .
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
 
   B, 
matK
 
Fig. .  

matK

   
 


Papilionoideae
(445/503 genera, 2316/ca. 14,000 species)
Caesalpinioideae (incl. mimosoid clade)
(146/148 genera, 937/ca. 4400 species)
Dialioideae
(15/17 genera, 19/ca. 85 species)
Detarioideae
(79/84 genera, 327/ca. 760 species)
Cercidoideae
(12/12 genera, 96/ca. 335 species)
Duparquetioideae
(1/1 genus, 1/1 species)
A.
B.
0.06
mimosoid clade
6.0
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LPWG Phylogeny and classification of the Leguminosae
49Version of Record
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66   : 44
LPWG Phylogeny and classification of the Leguminosae
50
     




Advances in legume
systematics
 


      
         
     
    
  
  
  
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      
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 
    
       
    
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   
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 

   
       
   
  
   
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     
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Duparquetia
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 
        

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 
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
   




         
   
  
   








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Fig. . A– F, G, H–L, A, Cercis siliquastrumB, Bauhinia galpiniiC, Bauhinia divaricataD, Piliostigma
thonningii E, Griffonia physocarpaF, Schnella cupreonitensG, Duparquetia orchidaceaH, Zenia insignisI, Apuleia leiocarpaJ, Poeppigia
proceraK, Distemonanthus benthamianusL, Kalappia celebica

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Fig. .A, Goniorrhachis marginataB, Hymenaea stigonocarpaC, Daniellia ogeaD, Peltogyne chrysopis
E,
Brodriguesia santosii
F, Brownea longipedicellataG, Amherstia nobilisH, Brachycylix vageleriI, Cryptosepalum tetraphyllumJ, Paramacrolobium coeruleumK,
Gilbertiodendron quinquejugumL, Aphanocalyx pteridophyllus. — 

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Fig. . A, Gleditsia amorphoidesB, Pterogyne nitensC, Batesia floribundaD, Moldenhawera blanchetianaE, Cassia fistula
F, Tachigali rugosaG, Arapatiella psilophyllaH, Caesalpinia cassioidesI, Arquita grandifloraJ, Delonix floribundaK, Campsiandra comosa
L, Dimorphandra pennigera. —    

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Fig. .  A, Chidlowia sanguineaB, Entada chrysostachys C, Gagnebina commersonianaD, Lemurodendron capuroniiE,
Neptunia plenaF, Mimosa benthamiiG, Acacia dealbataH, Senegalia sakalavaI, Inga calanthaJ, Inga grazielaeK, Macrosamanea amplis-
simaL, Albizia grandibracteata. —  

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Fig. . A, Castanospermum australeB, Petaladenium urceoliferumC, Pterodon abruptusD, Swartzia acutifoliaE, Trischidium
molleF, Exostyles venustaG, Harleyodendron unifoliolatumH, Haplormosia monophyllaI, Ormosia lewisiiJ, Harpalyce lanataK, Leptolobium
brachystachyumL, Camoensia brevicalyx. — G
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Fig. .A, Uleanthus erythrinoidesB, Cadia purpureaC, Sophora microphyllaD, Virgilia divaricataE, Cyclopia pubescens
F, Lupinus weberbaueriG, Dalea botteriiH, Errazurizia megacarpaI, Zornia reticulataJ, Poiretia tetraphyllaK, Pterocarpus amazonumL,
Baphia leptobotrys. — 

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Fig. . A, Chorizema glycinifoliumB, Bossiaea walkeriC, Mucuna giganteaD, Chadsia longidentataE, Canavalia brasilien-
sisF, Erythrina velutinaG, Gliricidia robustaH, Poissonia weberbaueriI, Anthyllis montanaJ, Astragalus uniflorusK, Trifolium rubensL,
Pisum sativumbiflorum. — . de

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Fig. .  A,B,C,D & E,F–L,A, Griffonia
physocarpaB, Duparquetia orchidaceaC, Dialium guianenseD, Brodriguesia santosiiE, Berlinia razziferaF,
Eligmocarpus cynometroidesG, Heteroflorum sclerocarpumH, Erythrostemon coccineusI, Entada polystachyaJ, Prosopis feroxK, Mimosa
townsendiiL, Cojoba arborea. — 

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Fig. .A & B,C–L,A, Abarema jupunbaB, Inga feuilleiC, Swartzia parvipetalaD,
Andira micrantha
E,
Crotalaria stipularia
F,
Pterocarpus angolensis
G,
Dalbergia lemurica
H,
Machaerium millei
I,
Carmichaelia . aligera
J, Erythrina madagascariensisK, Piscidia grandifoliaL, Phaseolus 

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  
  

         
 
  
    
 
   
 
 


            
 
  
  












 
Tab le . 


     



























herbs, or twining
vines with tendrils


 Often present 




  Often present on
the petiole and / or
on the primary
and secondary
rachises, usually
between pinnae or
leaflet pairs,



oc-
casionally present
on stipules, stipels,
bracts, or swollen
and nectar- secret-
ing peduncles or
sepals

 Intrapetiolar
(i.e., somewhere
between the petiole
and the axillary
bud) and then free,
valvate and con-
nected by chaffy
hairs, or fused,
either partly (only
at base) or entirely,


 




very rarely
interpetiolar

Unifoliolate or
bifoliolate Usually paripin-
nate

 Usually imparip-
innate, 



bi-
pinnate

mostly paripinnate




Mostly pari- or
imparipinnate
or palmately
compound,

trifoliolate,


Version of Record
TAX ON
66   : 44
LPWG Phylogeny and classification of the Leguminosae


    






    
         

  



 


  


 

  


    
      International Code of
Nomenclature for algae, fungi and plants Melbourne Code

Tab le . 
     
 























  Branched, thyrsoid
inflorescences,














  Large 
frequently petaloid,
valvate, imbricate
or partially fused
or partly fused
with the hypan-
thium, partially or
completely enclos-
ing the bud
   






some-
times papilionate






never papilionate


never
papilionate



sometimes
papilionate









some-
times papilionate




usually
papilionate,









 





cupular


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66   : 44
LPWG Phylogeny and classification of the Leguminosae

Tab le . 
     









4, unequal, free, the
abaxial and adaxial
sepals cucullate
and sepaloid, the
laterals petaloid













 

imbri-
cate, the adaxial
petal innermost



imbricate,
the adaxial petal
generally outer-
most,





imbricate,
the adaxial petal
outermost



all 5
petals with stalked
glands along their
margins

im-
bricate, the adaxial
petal innermost, 



valvate
or imbricate,
then adaxial petal
innermost



imbricate, the
adaxial petal
outermost
















4



















  

Filaments usually
connate into a
sheath or tube




















































rarely
in tetrads




asymmet-
rical, one equa-
torial-encircling
ectoaperture with
two equatorial
endoapertures






porate tetrads,
bitetrads or
polyads,





















rarely polycar-
pellate





Version of Record
TAX ON
66   : 44
LPWG Phylogeny and classification of the Leguminosae
63
Tab le . 
     





 
























Commonly inde-
hiscent drupaceous
or samaroid,
























 cres-
cent-shaped hilum,

lack-
ing pleurograms,
pseudopleuro-
grams, wing or aril


occasionally
with pseudopleuro-
grams; 



lacking
pleurograms

lacking
pleurograms
Usually with an
open or closed
pleurogram
on both faces,















pleurogram
lacking



    



   

 


    





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66   : 44
LPWG Phylogeny and classification of the Leguminosae
64
Tab le  . 
    matK  
.
CERCIDOIDEAEAdenolobus  Barklya    Bauhinia  Bre-
nierea  Cercis  Gigasiphon  Griffonia  Lysiphyllum   Phanera   Piliostigma  Schnella
 Tylosema  
Recent synonym: Lasiobema Phanera 
DETARIOIDEAEAfzelia  Amherstia  Annea  Anthonotha  Aphano-
calyx  Augouardia  Baikiaea  Barnebydendron  Berlinia   Bikinia  *Brachycylix
 Brachystegia  Brandzeia  Brodriguesia  Brownea  Browneopsis  Colophospermum
  Copaifera  Crudia  Cryptosepalum  Cynometra  Daniellia  Detarium  Dicymbe 
 Didelotia  Ecuadendron  Elizabetha  Endertia  Englerodendron   Eperua
 Eurypetalum  Gabonius  Gilbertiodendron  Gilletiodendron    Goniorrhachis 
Gossweilerodendron   Guibourtia  Hardwickia  Heterostemon  Humboldtia  Hylodendron   Hymenaea 
Hymenostegia  Icuria  Intsia  Isoberlinia  Isomacrolobium  Julbernardia
 Kingiodendron  Lebruniodendron  Leonardoxa  *Leucostegane  Librevillea  Loesenera 
Lysidice  Macrolobium  Maniltoa  *Michelsonia  *Micklethwaitia    Microberlinia 
Neoapaloxylon  Neochevalierodendron  Normandiodendron  Oddoniodendron   Oxystigma 
Paloue  Paloveopsis  Paramacrolobium  Peltogyne   Plagiosiphon  Polystemonanthus  Prioria
 *Pseudomacrolobium  Saraca  Schotia  Scorodophloeus  Sindora  Sindoropsis  Stemonocoleus
 Talbotiella  Tamarindus  Tessmannia  Tetraberlinia  Zenkerella 
Recent synonym: Pellegriniodendron Gilbertiodendron  
DUPARQUETIOIDEAEDuparquetia 
DIALIOIDEAE*Androcalymma  Apuleia  Baudouinia  Dialium  Dicorynia  Diste-
monanthus  Eligmocarpus  Kalappia   Koompassia  Labichea  Martiodendron
 Mendoravia  Petalostylis  Poeppigia  Storckiella  *Uittienia  Zenia 
CAESALPINIOIDEAEAbarema   Acacia
 Acaciella   Acrocarpus   Adenanthera L. Adenopodia  Afrocalliandra  
Alantsilodendron  Albizia  Amblygonocarpus  Anadenanthera  Arapatiella  Archidendron
 Archidendropsis  Arcoa  Arquita   Aubrevillea  Balizia
       Balsamocarpon  Batesia  Biancaea    Blanchetiodendron   Burkea
 Bussea  Caesalpinia  Calliandra  Calliandropsis   Calpocalyx  Campsiandra 
Cassia  Cathormion  Cedrelinga  Cenostigma  Ceratonia  Chamaecrista  Chidlowia  Chloroleucon
 Cojoba  Colvillea  Conzattia  Cordeauxia  Coulteria  Cylicodiscus
 Delonix  Denisophytum       Desmanthus  Dichrostachys  Dimorphandra  Dinizia 
Diptychandra  Ebenopsis  Elephantorrhiza  Entada  Enterolobium  Erythrophleum 
Erythrostemon  Faidherbia  Falcataria  Fillaeopsis  Gagnebina 
Gelrebia  ; Gleditsia  Guilandina  Gymnocladus  Haematoxylum  Havardia Hererolandia  
; Hesperalbizia  Heteroflorum  Hoffmannseggia   *Hultholia    ; Hydrochorea
 *Indopiptadenia  Inga  Jacqueshuberia  Kanaloa  Lemurodendron 
Lemuropisum  Leucaena  Leucochloron  Libidibia      Lophocarpinia  Lysiloma
 Macrosamanea   Mariosousa       Melanoxylon  Mezoneuron  Microlobius
 Mimosa L. Mimozyganthus  Moldenhawera  Mora  Moullava  Neptunia  Newtonia
 Pachyelasma  Painteria   Parapiptadenia  Pararchidendron  Paraserianthes  Parkia
  Parkinsonia Paubrasilia; Peltophorum  Pentaclethra  Piptadenia 
Piptadeniastrum  Piptadeniopsis  Pithecellobium  Pityrocarpa  Plathymenia  Pomaria
  Prosopidastrum  Prosopis L. Pseudopiptadenia  Pseudoprosopis  Pseudosamanea Pterogyne  
Pterolobium  Recordoxylon  Samanea  Sanjappa    ; Schizolobium 
Schleinitzia   Senegalia  Senna  Serianthes  Sphinga   Stachyothyrsus
 Stenodrepanum  Stryphnodendron  Stuhlmannia   Sympetalandra  Tachigali  Tara  Tetrapleura
 Tetrapterocarpon   Thailentadopsis  Umtiza  Vachellia   Viguieranthus  Vouacapoua 
Wallaceodendron  Xerocladia   Xylia  Zapoteca  Zuccagnia  Zygia      .
Recent synonyms: GuinetiaCalliandra Marmaroxylon Zygia       Poincianella 
ErythrostemonCenostigma  Stahlia Libidibia
PAPILIONOIDEAE  Abrus   Acmispon  Acosmium  Adenocarpus  Adenodolichos
 Adesmia  Aenictophyton   Aeschynomene  Afgekia  Aganope  Airyantha  Akschindlium 
Aldina  Alexa  Alhagi  Alistilus   Almaleea    Alysicarpus   Amburana 
Amicia  Ammodendron  Ammopiptanthus  Ammothamnus  Amorpha  Amphicarpaea    
Amphimas      Amphiodon  Amphithalea  Anagyris  Anarthrophyllum  Ancistrotropis 
Andira  Angylocalyx  Antheroporum  Anthyllis  *Antopetitia  Aotus  Aphyllodium  Apios
 Apoplanesia  Apurimacia  Arachis  Argyrocytisus  Argyrolobium  Arthroclianthus
 Aspalathus  Astragalus  Ateleia  Austrodolichos    Austrosteenisia  Baphia 
   Baphiastrum  Baphiopsis  Baptisia  *Barbieria  Behaimia   Bionia  *Biser-
rula  Bituminaria  Bobgunnia  Bocoa  Bolusafra   Bolusanthus  Bolusia 
Bossiaea  Bowdichia  Bowringia  Brongniartia  Brya        Bryaspis         *Burkilliodendron
 Butea  Cadia  Cajanus  Calicotome  Callerya  Callistachys   Calobota  
Calophaca  Calopogonium  Calpurnia  Camoensia  Camptosema   Campylotropis
 Canavalia  Candolleodendron  Caragana  Carmichaelia  Carrissoa    Cascaronia  
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66   : 44
LPWG Phylogeny and classification of the Leguminosae
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Castanospermum     Centrolobium  Centrosema  Chadsia  Chaetocalyx  Chapmannia
    Chesneya  Chorizema  Christia  *Chrysoscias  Cicer  Cladrastis  Clathrotropis
 Cleobulia  Clianthus  Clitoria  Clitoriopsis  *Cochlianthus  Cochliasanthus
 Codariocalyx  Collaea  Cologania  Colutea  Condylostylis  Cordyla  Corethrodendron       
Coronilla  Coursetia  Craibia   Cranocarpus  Craspedolobium   Cratylia   *Cristonia
 Crotalaria  Cruddasia  Cullen   Cyamopsis  Cyathostegia  Cyclocarpa  Cyclolo-
bium  Cyclopia  Cymbosema  Cytisophyllum  *Cytisopsis   Cytisus  Dahlstedtia 
Dalbergia  Dalbergiella  Dalea  Dalhousiea  Daviesia  Decorsea      Deguelia  Dendro-
lobium   Dermatophyllum  Derris  *Desmodiastrum  Desmodium  
Dewevrea  Dichilus  Dicraeopetalum  Dillwynia  Dioclea  Diphyllarium  Diphysa  Diplotropis
 Dipogon  Dipteryx  Discolobium  Disynstemon  Dolichopsis  Dolichos  Dorycnium 
*Dorycnopsis  Droogmansia  Dumasia  Dunbaria   Dussia   Dysolobium  
 Ebenus  *Echinospartum  Eleiotis  *Eminia   Endosamara  Eremosparton 
Erichsenia  Erinacea  Eriosema  Erophaca  Errazurizia  Erythrina  Euchilopsis   Euchlora
 *Euchresta   Eutaxia  Eversmannia  Exostyles  Eysenhardtia  *Ezoloba 
   Fairchildia      Fiebrigiella  Fissicalyx  Flemingia    Fordia  Galactia
      Galega  Gastrolobium  Geissaspis  Genista  Genistidium  Geoffroea 
Gliricidia  Glycine  Glycyrrhiza  Gompholobium  *Gonocytisus Goodia Grazielodendron 
*Greuteria      Gueldenstaedtia  Guianodendron  Halimodendron 
 Hammatolobium   Hanslia   Haplormosia  Hardenbergia  Harleyodendron  Harpalyce 
     Haymondia     Hebestigma  Hedysarum  Hegnera  Helicotropis  *Herpyza 
Hesperolaburnum  Hesperothamnus  Hippocrepis  Hoita  Holocalyx  *Hosackia  Hovea
 Humularia  Hylodesmum   Hymenocarpos  Hymenolobium  Hypocalyptus
 Indigastrum  Indigofera  Inocarpus  Isotropis  Jacksonia 
*Kebirita      Kennedia  Kotschya  Kummerowia   Kunstleria  Lablab   Laburnum  
Lackeya   Ladeania  Lamprolobium  Lathyrus  Latrobea  *Lebeckia
 Lecointea  *Lembotropis  Lennea  Lens  Leobordea  Leptoderris  *Leptodesmia   
 Leptolobium   Leptosema  Leptospron  Lespedeza  Lessertia  Leucomphalos
 Limadendron    Liparia  *Listia    Lonchocarpus  Lotononis 
Lotus  Luetzelburgia  Lupinus  Luzonia  Maackia      Machaerium  Macropsychanthus  Macrop-
tilium  Macrotyloma   Maraniona   Marina  Mastersia
 Mecopus  Medicago  *Meizotropis  Melilotus  Melliniella  Melolobium  Microcharis 
Mildbraediodendron  Millettia  Mirbelia  Monarthrocarpus   Monopteryx   *Montigena
 Mucuna  Muellera  Muelleranthus  Mundulea  Myrocarpus  Myrospermum  Myroxylon
 Mysanthus  *Neocollettia  *Neoharmsia      Neonotonia  Neorautanenia  Neoru-
dolphia  Nephrodesmus  Nesphostylis    Neustanthus  Nissolia  Nogra  Oberholzeria 
  Ohwia  Olneya   Onobrychis  Ononis  Ophrestia  Orbexilum
 *Oreophysa  Ormocarpopsis      Ormocarpum  Ormosia  Ornithopus  Orphanodendron
   Oryxis   *Ostryocarpus   Otholobium   Otoptera  *Ototropis 
*Ottleya   *Ougeinia  Oxylobium  Oxyrhynchus  Oxytropis  Pachyrhizus   Panurea
 Paracalyx  *Paragoodia  Paramachaerium  Paratephrosia  Parochetus 
Parryella   Pearsonia  Pediomelum  Periandra  Pericopsis  Petaladenium
 Peteria  Petteria  Phaseolus  Philenoptera  *Phylacium  Phyllodium   Phyllolobium
 Phyllota  Phylloxylon  Physostigma  Pickeringia  Pictetia  Piptanthus 
Piscidia  Pisum  Plagiocarpus  Platycelyphium  Plat ycyamus  Platylobium  Platymiscium   Platypodium
  Platysepalum   Podalyria  Podlechiella  *Podocytisus  Podolobium
 *Podolotus  Poecilanthe  Poiretia   *Poissonia  Poitea   Polhillia   Pongamiopsis
 Pseudarthria    Pseudeminia   Pseudoeriosema  *Pseudolotus  Pseudovigna        
Psophocarpus  Psoralea  *Psoralidium  Psorothamnus  Pterocarpus  Pterodon   Ptycholobium 
*Ptychosema  Pueraria  Pultenaea  Pycnospora       *Pyranthus      Rafnia  Ramirez-
ella  Ramorinoa  Requienia  Retama  Rhodopis  Rhynchosia   *Rhynchotropis   Riedeliella 
Robinia  *Robynsiophyton   *Rothia   Rupertia         *Sakoanala  *Salweenia   *Sarcodum  
Sartoria  Schefflerodendron  Scorpiurus  Securigera  Sellocharis   Sesbania   Shuteria 
 Sigmoidotropis  Sinodolichos   Smirnowia  Smithia  Soemmeringia  Solori  Sophora
 Spartium  Spathionema   Spatholobus  Sphaerolobium  Sphaerophysa  Sphenostylis  Sphinctospermum
 Spirotropis   Spongiocarpella     Staminodianthus  Stauracanthus
 Steinbachiella  Stirtonanthus  *Stonesiella    *Streblorrhiza  Strongylodon
  Strophostyles  Stylosanthes  Styphnolobium  Sulla  Sutherlandia  Swainsona 
Swartzia  Sweetia  *Sylvichadsia    *Syrmatium  Ta baroa  Tadeh agi
 Taralea  Taverniera  Templetonia   Tephrosia  *Teramnus        Tetragonolobus 
Teyleria  Thermopsis     Thinicola  Tibetia           Tipuana  Toxicopueraria 
 Trifidacanthus  Trifolium  Trigonella  Tripodion  Trischidium  Uleanthus  Ulex  Uraria  
Uribea  Urodon   *Vandasina  Vatairea  Vataireopsis  Vatovaea   Vavilovia  
*Verdesmum  Vicia  Vigna  Viminaria  Virgilia  *Vuralia  Wajira  Weber-
bauerella  *Wiborgia  *Wiborgiella  Wisteria  Xanthocercis  *Xeroderris  Xiphotheca
 Zollernia  Zornia    Zygocarpum 
Recent synonyms: Barnebyella AstragalusBergeronia   Muellera Calia   Dermatophyllum
Etaballia PterocarpusMargaritolobiumMuelleraOphiocarpus AstragalusParaderris  
DerrisPeltiera OrmocarpopsisSpartidium Calobota
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66   : 44
LPWG Phylogeny and classification of the Leguminosae
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     


   












 
 



   

  


INTEGRATING TRIBAL AND CLADE-BASED
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    




         


 

   




  
     
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

   
 
 

        

  

 
 
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  
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  
 
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
 
    
 
        
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    
Dinizia
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Chidlowia  
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  
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REFERENCE PHYLOGENY
 
  
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 matK
    
    
 
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66   : 44
LPWG Phylogeny and classification of the Leguminosae
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     
    
 
         
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SucS 
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 matK  
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   
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      
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       
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Bauhinia
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          
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

   

       

  
 


 
    





 
     



     
   


      


TAXONO MY
       
  
          
  
 




Key to the subfamilies of Leguminosae
   


 .............................. Duparquetioideae

Version of Record
TAX ON
66   : 44
LPWG Phylogeny and classification of the Leguminosae
68
Petaladenium


 ... 2
 
 


  

  
 .............................. Papilionoideae
       
  
  
          
  

 ................................ 3
 
................ Caesalpinioideae
 
 ................................... 4
   
 .......
................................................... Cercidoideae
       
 .................. 5

 
  
.................................................... Detarioideae
  
 .... 6
    
 
   
Eligmocarpus Poeppigia
 .... Dialioideae
        
   



 .......
.............................................. Caesalpinioideae
Descriptions of the six subfamilies

bold
 Cercidoideae   
stat. nov.  
Cercis L.
   

Brenierea

Bauhinia 
Leaves uni- or bifoliolate (bipinnate,
pinnate, palmate and trifoliolate leaves totally lacking),
leaflet blade (when unifoliolate) entire or bilobed
with a small mucro at the apex or between the lobes,

 
     
Cercis   
 
  
Bauhinia Brenierea


    
   

  
     
  Bauhinia  

          

crescent-shaped hilum,Cercis

Brenierea
   

Barklya

  
n
 
Griffonia
Brenierea

Cercis
    
Cercis canadensisBauhinia di
-
varicataPoeppigia proceraDuparquetia or-
chidacea Bobgunnia fistuloides

 Detarioideae   
Detarium
        
Cryptosepalum 

Stipules in intra-
petiolar position (i.e., somewhere between the petiole and
the axillary bud) and then free, valvate and connected by
chaffy hairs, or fused, either partly (only at base) or en-
tirely,   Leaves paripinnate 


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66   : 44
LPWG Phylogeny and classification of the Leguminosae
69
         
    Paloue  Paloveopsis
ZenkerellaCryptosepalumDidelotia
Guibourtia
 

    large, frequently petaloid, val-
vate or imbricate, free or partially fused or partly fused with
the hypanthium, partially or completely enclosing the bud.


     

 

Hymenaea    




  


   Brandzeia
 Barnebydendron  Gossweilerodendron
HardwickiaNeoapaloxylon
    Tamarindus   
Hymenaea        
 Lysidice 
ParamacrolobiumPeltogyne     Tamarindus
    

Hymenostegia  Loesenera

n



Schotia
    
Goniorrhachis marginata 
Aphanocalyx cynometroidesCercis canadensis
Duparquetia orchidaceaBobgunnia fistuloides.
 Duparquetioideae   
stat. nov. Duparquetiinae

Duparquetia




 

sepals 4, unequal, the
abaxial and adaxial sepals cucullate, sepaloid, the lateral
sepals petaloid;

all 5 petals with stalked gland-like extrusions along their
margins,  
  
      the anthers
postgenitally fused into a curving synandrium,
asymmetrical, one
equatorial-encircling ectoaperture with two equatorial en
-
doapertures;  
  

      



Duparquetia orchidacea

Dialioideae  stat.
nov.Dialiinae
 Dialium L.
 Labichea
Petalostylis
      

Leaves imparipinnate,    Eligmocarpus
 PoeppigiaBaudouinia 
LabicheaMendoravia Uittienia 
Labichealeaflets alternate, 
EligmocarpusPoeppigiaInflorescences
highly branched, thyrsoid,
LabicheaPetalostylis

Petalostylis   
Apuleia
hypanthium rarely present,

 LabicheaStorckiella
 ApuleiaDialiumMendoravia

 
fertile stamens
5 or fewer,DialiumPoeppigiausu-
ally only antesepalous whorl present,
  Eligmocarpus anthers basifixed,
Poeppigia    often
reduced to a short apical, poricidal slit,
 
 Dialium
       
 Dialium 
Fruits commonly indehiscent
drupaceous or samaroid,Eligmocarpus
LabicheaMendoraviaPetalostylis
       
Baudouinia

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66   : 44
LPWG Phylogeny and classification of the Leguminosae

Poeppigia Mendoravia 
Apuleia Dialium Dicorynia . Distemonanthus 
    Apuleia Distemonanthus
Poeppigia
n
       


   

    
Poeppigia proceraDialium guian-
ense Cercis canadensisDuparquetia
orchidaceaBobgunnia fistuloides.
 Caesalpinioideae  
Caesalpinia L.
Mimosa L.
     
Cassia

   

specialised extrafloral nectaries often present on the pet-
iole and / or on the primary and secondary rachises, usu-
ally between pinnae or leaflet pairs, 
 Senna Macrosamanea  
   Archidendron 
   
 commonly bipinnate,
Arcoa Cenostigma
Gleditsia StuhlmanniaCeratonia
Moldenhawera  



      Inflorescences
globose, spicate,  
    
 CeratoniaGleditsiaGymnocladus 
   

 
 


aestivation valvate   

 
Mimosa 
 
  
often with a stipitate or sessile apical gland,

commonly in tet-
rads, bitetrads or polyads     




Seeds usually with an open or closed pleurogram
on both faces,  Pithecellobium
AcaciaInga

     
Tachigali . Diptychandra
.Root
nodules variably present and indeterminate 
n   
n 






     
   Gleditsia
Gymnocladus    Desmanthus 
Senna


    
Arcoa gonavensis  Mimosa
pudicaBobgunnia fistuloidesDuparquetia orchi-
daceaPoeppigia procera.
Papilionoideae 
  Faba 
Vicia 
. 
    Lotus L.


      
   
Erythrina
Platymiscium
     
   trifoliolate,

Rhynchosia ferulifolia
         
   
 

   
  

 
 
   
  
corolla mostly
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66   : 44
LPWG Phylogeny and classification of the Leguminosae

Adanson, M.  Familles des plantes. 

APG (Angiosperm Phylogeny Group) III    

Bot. J. Linn. Soc.  
           
papilionate with the adaxial petal (= standard) outermost
and largest, 



filaments most
commonly connate into a sheath or tube, or uppermost fila-
ment wholly or partly free,




  

 complex hilar valve,
elongate hilum and lens usually present
embryo usually curved, 


Root nodules generally present,
either indeterminate or determinate.n
 n
    



       

    
Castanospermum australe 
Vicia faba Erythrostemon gilliesii
 Gleditsia triacanthos Dialium gui-
anense   

The mimosoid clade
         



Pentaclethra macrophylla
Inga edulis 
 
Chidlowia
    

   
   
   
Parkia

 
   
           


ACKNOWLEDGEMENTS
   
   
      
    

    matK
        
 

   
    


                  

  

 
       
 

                


 
       
 

      
               
    

      


     
                
               

 
    

 



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66   : 44
LPWG Phylogeny and classification of the Leguminosae

Bello, M.A., Bruneau, A., Forest, F. & Hawkins, J.A. 
  P 
matKrbcLSyst. Bot.

Bello, M.A., Rudall, P.J. & Hawkins, J.A. 

Cladistics
            
Bentham, G.   
Genera plantarum .   :
Reeve. 
Bouchenak-Khelladi, Y., Maurin, O., Hurter, J. & Van der Bank,
M. .  
 Molec.
Phylogen. Evol. 
     
BFG – The Brazil Flora Group 
eed Rodriguésia   
     
Bruneau, A., Forest, F., Herendeen, P.S., Klitgaard, B.B. & Lewis,
G.P. 
 trnL  
Syst. Bot.  
Bruneau, A., Mercure, M., Lewis, G.P. & Herendeen, P.S. 
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Doyle, J.J., Chappill, J.A., Bailey, C.D. & Kajita, T. 
 rbcL 

Advances in legume systematics
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DRYFLOR  
Science 
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Dugas, D.V., Hernandez, D., Koenen, E.J.M., Schwarz, E., Straub,
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clpP. Sci. Rep.
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Fougère-Danezan, M., Maumont, S. & Bruneau, A. 
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Syst. Bot. 
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H.T., Weeden, N.F. & Young, N.D.   
 :
Pl. Physiol. 
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Ann. Missouri Bot. Gard.
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Grass Phylogeny Workin g Group II 
                New Phy -
tol.          
Hancock, J.F.   Plant evolution and the origin of crop species
ed. 3
    
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66   : 44
LPWG Phylogeny and classification of the Leguminosae

Herendeen, P.S., Lewis, G.P. & Bruneau, A. 
Umtiza
Int. J. Pl. Sci.        
Huson, D.H. & Scornavacca, C. 
  . Syst. Biol. 
   
Hutchinson, J. The families of flowering plantsv. Dicoty-
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Hutchinson, J. The genera of flowering plants (Angiospermae)
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Hutchinson, J. & Dalziel, J.M. Flora of tropical West Africa
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Irwin, H.S.    
    Advances in legume systematics

Jussieu, A.L. de  Genera plantarum.    


Kajita, T., Ohashi, H., Tateishi, Y., Bailey, C.D. & Doyle, J.J. 
rbcL    
 Syst. Bot.
Käss, E. & Wink, M. 
rbcLBio-
chem. Syst. Ecol. 
     
Katoh, K. & Standley, D.M. : 
  
   Molec. Biol. Evol. 
   
Koenen, E. J.M., De Vos, J.M., Atchison, G.W., Simon, M.F., Schrire,
B.D., Souza, E.R. de, Queiroz, L.P. de & Hughes, C.E. 
S. Afri-
can J. Bot.      
Lanfear, R., Calcott, B., Ho, S.Y.W. & Guindon, S. 
    
    Molec. Biol. Evol. :
 
Lartillot, N., Lepage, T. & Blanquart, S. 
  
Bioinformatics
 
Lavin, M., Pennington, R.T., Klitgaard, B.B., Sprent, J.I., Lima,
H.C. de & Gasson, P.E.  
     Amer.
J. Bot. 88: 503–533. 
Lavin, M ., Schrire, B. , Lewis, G., Penn ington, R.T., Delgado- Salinas,
A., Thulin, M., Hughes, C., Beyra-Matos, A. & Wojciechowski,
M.F. 

Philos. Trans., Ser. B
Lavin, M., Herendeen, P.S. & Wojciechowski, M.F. 

 Syst. Biol. 
     
Lewis, G.P. & Forest, F.    
     Legumes of the
World
Lewis, G.P. & Schrire, B.D.   
     Advances in legume
systematicsHigher level systematics 

Lewis, G., Schrire B., Mackinder, B. & Lock, M. (eds.)  Le-
gumes of the World.       
Lewis, G.P., Schrire, B.D., Mackinder, B.A., Rico, L. & Clark, R.


S. African J. Bot .      
Li, H.L., Wang, W., Li, R.Q., Zhang, J.B., Sun, M., Naeem, R., Su,
J.X., Xiang, X.G., Mortimer, P.E., Li, D.Z., Hyde, K.D., Xu,
J.C., Soltis, D.E., Soltis, P.S., Li, J.H., Zhang, S.Z., Wu, H.,
Chen, Z.D. & Lu, A.M.          
J. Syst. Evol. 
        
LPWG, Legume Phylogeny Working Group  
   
Taxon
  
LPWG, Legume Phylogeny Working Group 
   
S. African J. Bot. 89: 39.
Luckow, M., Miller, J.T., Murphy, D.J. & Livshultz, T. 
     
 
   Advances in legume systematics 
Higher level systematics   

Manzanilla, V. & Bruneau, A.  

Molec. Phylogen.
Evol.       
Marazzi, B., Ané, C., Simon, M.F., Delgado-Salinas, A., Luckow,
M. & Sanderson, M.J.  
Evolution
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     
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    
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

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
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 Proc. Biol. Soc.
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Pennington, R.T., Klitgaard, B.B., Ireland, H. & Lavin, M. 
Version of Record
TAX ON
66   : 44
LPWG Phylogeny and classification of the Leguminosae



 Advances in legume systematics   

Pennington, R.T., Lavin, M., Särkinen, T., Lewis, G.P., Klitgaard,
B.B. & Hughes, C.E.  
  Proc. Natl. Acad.
Sci. U.S.A.   
     
Polhill, R.M.  
Phytochemical dictionary of the Legumi-
nosae Plants and their constituents

Polhill, R.M. & Raven, P.H. (eds.) Advances in legume systemat-
ics
Polhill, R.M., Raven, P.H. & Stirton, C.H. 
        
Advances in legume systematics  

Rambaut, A., Suchard, M.A., Xie, D. & Drummond, A.J.  
 .        
Ramos, G., Lima, H.C. de, Prenner, G., Queiroz, L.P. de, Zartman,
C.E. & Cardoso, D. 
Aldina
Molec. Phylogen. Evol. 
     
Ranwez, V., Harispe, S., Delsuc, F. & Douzery, E.J.P. 
c
PLoS ONE
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Iwasa, Y., Smith, G.F., Victor, J.E. & Nkonki, T. 

Taxon  
Zanne, A.E., Tank, D.C., Cornwell, W.K., Eastman, J.M., Smith,
S.A., FitzJohn, R.G., McGlinn, D.J., O’Meara, B.C., Moles,
A.T., Reich, P.B., Royer, D.L., Soltis, D.E., Stevens, P.F.,
Westoby, M., Wright, I.J., Aarssen, L., Bertin, R.I., Calaminus,
A., Govaerts, R., Hemmings, F., Leishman, M.R., Oleksyn, J.,
Soltis, P.S., Swenson, N.G., Warman, L. & Beaulieu, J.M. 

Nature 
Appendix 1. matK
Sampling. —  matK
     

 
matK
 matK
   
     
 
     
                
  


  

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66   : 44
LPWG Phylogeny and classification of the Leguminosae
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Appendix 2.

Anthotaxy  

Bipinnate  
 
Crescent shaped 
Craspedium   


Drupaceous    

 
Exstipellate 
Hilum  

  

 

Imparipinnate    

Lens
  


Loment

Overgrown


Palmate

 

Paraphyllidium,   
      

Paripinnate

Pleurogram     

Prickles 


Pseudopleurogram 
    

Pseudoraceme 
   

Samaroid
   
    

Spathaceous    
 

Spines                   

Stipel
Stipellate
Synandrium
 
Thyrse    

Thyrsoid 
 
  


  
 

    
 
                  
       
      
      
       
     
      
    

   
   

      



Phylogenetic analyses. — 


 
           
  



     



   






   

   

 
       


      
 

  
    

    




Appendix 1. .
Version of Record
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66   : 44
LPWG Phylogeny and classification of the Leguminosae

Fig.  (Appendix ).A, Goniorrhachis marginataB, 
Luetzelburgia bahiensis
C,
  Pityrocarpa moniliformis 
D,      Zornia myriadena E,         Centrosema
arenarium   F,  Mimosa tenuiflora
     G, Deguelia nitidula
eH, P Macroptilium
bracteatum    I & J,  Apuleia leiocarpa
I,Zenia insignis J, 
: Gde   
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LPWG Phylogeny and classification of the Leguminosae
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Fig.  (Appendix ).A, Mimosa irrigua
B, Aeschynomene martii
C,  Andira humilisD & E,       : D, Dalbergia nigra
 E, Luetzelburgia andrade-limae   F,  Dioclea edulis 
        
G & H,
:
G,
Adenanthera pavonina 
H,
Leucaena
leucocephala I, Tamarindus indica
J–K, : J, Phaseolus vulgarisK, Erythrina velutina

:  de 
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... Furthermore, the distribution of Chamaecrista is unique in being the only nodulated caesalpinioid genus which has species that have colonized temperate regions (Sprent et al., 2013). All Chamaecrista species so far examined form symbiotic root nodules with nitrogen-fixing bacteria collectively known as rhizobia (Gyaneshwar et al., 2011;Peix et al., 2015;Sprent et al., 2017), while related genera comprising the Cassia clade (Azani et al., 2017), p. ex. Cassia L., and Senna Mill. ...
... In the present study, the tree species C. eitenorum, which is native to SDTFs, had the apparently unique property of being nodulated by strains of Paraburkholderia related to those that nodulate Mimosa and Calliandra spp. in the same environment (Bontemps et al., 2010;Silva et al., 2018); indeed, the fact that these isolates were also capable of nodulating C. duartei and C. ensiformis in crossinoculation studies suggests that Chamaecrista-Paraburkholderia symbioses might be relatively abundant, at least among the tree species. Further to this, the C. eitenorum-Paraburkholderia interaction is the first confirmed report of a beta-rhizobial symbiosis in nodules from a Caesalpinioideae species outside the Mimosoid clade (Azani et al., 2017), and it is also the first report of FTs being occupied by this type of microsymbiont, which demonstrates that the FT phenotype is not controlled by any particular rhizobial type (e.g. Bradyrhizobium), but is an inherent plant characteristic, which might be expected if the 'host controls the party' (Ferguson et al., 2019). ...
Article
All non-mimosoid nodulated genera in the legume subfamily Caesalpinioideae confine their rhizobial symbionts within cell wall-bound “fixation threads” (FTs). The exception is the large genus Chamaecrista in which shrubs and subshrubs house their rhizobial bacteroids more intimately within symbiosomes, whereas large trees have FTs. This study aimed to unravel the evolutionary relationships between Chamaecrista growth habit, habitat, nodule bacteroid type, and rhizobial genotype. The growth habit, bacteroid anatomy, and rhizobial symbionts of 30 nodulated Chamaecrista species native to different biomes in the Brazilian state of Bahia, a major centre of diversity for the genus, was plotted onto an ITS-TrnL-F-derived phylogeny of Chamaecrista. The bacteroids from most of the Chamaecrista species examined were enclosed in symbiosomes (SYM-type nodules), but those in arborescent species in the section Apoucouita, at the base of the genus, were enclosed in cell wall material containing homogalacturonan (HG) and cellulose (FT-type nodules). Most symbionts were Bradyrhizobium genotypes grouped according to the growth habits of their hosts, but the tree, C. eitenorum, was nodulated by Paraburkholderia. Chamaecrista has a range of growth habits that allow it to occupy several different biomes and to co-evolve with a wide range of (mainly) bradyrhizobial symbionts. FTs represent a less intimate symbiosis linked with nodulation losses, so the evolution of SYM-type nodules by most Chamaecrista species may have (a) aided the genus-wide retention of nodulation, and (b) assisted in its rapid speciation and radiation out of the rainforest into more diverse and challenging habitats.
... It is well known that numerous rhizobial genes contribute to plant nodulation (nod) and nitrogen fixation (nif, fix) processes, and some of them are used for characterization of symbiotic relationships and host range prediction 1,14,21,53,[67][68][69][70][71][72][73][74][75] . Among these genes, nodC and nifH are used in most studies to classify rhizobial strains to particular symbiotic variants (sv.). ...
... In our earlier study, we classified these clover root isolates to R. leguminosarum species 46 and results obtained in this work allowed us to classify them to the symbiovar trifolii. Generally, phylogenetic analysis of two symbiotic nodC and nifH genes are sufficient to assign strains to a particular symbiovar, as it was confirmed for many isolates from different species 1,14,21,53,[67][68][69][70][71][72][73][74][75] . For an example based on the nodC sequences, isolates from Phaseolus vulgaris were classified to symbiovars phaseoli and gallicum 70 . ...
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Red clover (Trifolium pratense L.) is a forage legume cultivated worldwide. This plant is capable of establishing a nitrogen-fixing symbiosis with Rhizobium leguminosarum symbiovar trifolii strains. To date, no comparative analysis of the symbiotic properties and heterogeneity of T. pratense microsymbionts derived from two distinct geographic regions has been performed. In this study, the symbiotic properties of strains originating from the subpolar and temperate climate zones in a wide range of temperatures (10–25 °C) have been characterized. Our results indicate that all the studied T. pratense microsymbionts from two geographic regions were highly efficient in host plant nodulation and nitrogen fixation in a wide range of temperatures. However, some differences between the populations and between the strains within the individual population examined were observed. Based on the nodC and nifH sequences, the symbiotic diversity of the strains was estimated. In general, 13 alleles for nodC and for nifH were identified. Moreover, 21 and 61 polymorphic sites in the nodC and nifH sequences were found, respectively, indicating that the latter gene shows higher heterogeneity than the former one. Among the nodC and nifH alleles, three genotypes (I–III) were the most frequent, whereas the other alleles (IV–XIII) proved to be unique for the individual strains. Based on the nodC and nifH allele types, 20 nodC-nifH genotypes were identified. Among them, the most frequent were three genotypes marked as A (6 strains), B (5 strains), and C (3 strains). Type A was exclusively found in the temperate strains, whereas types B and C were identified in the subpolar strains. The remaining 17 genotypes were found in single strains. In conclusion, our data indicate that R. leguminosarum sv. trifolii strains derived from two climatic zones show a high diversity with respect to the symbiotic efficiency and heterogeneity. However, some of the R. leguminosarum sv. trifolii strains exhibit very good symbiotic potential in the wide range of the temperatures tested; hence, they may be used in the future for improvement of legume crop production.
... Perez-Escobar et al. (2023) presented a novel hypothesis of biogeography of orchid plants, proving that taxon sampling depth and outgroups influence results. There is thus an urgent need for global collaboration to undertake large-scale phylogenomic work in other plant lineages, as in the case of Fabaceae (Azani et al., 2017), Lamiaceae (Boachon et al., 2018), and Poaceae (Soreng et al., 2017(Soreng et al., , 2022; and Carex (Roalson et J o u r n a l P r e -p r o o f al., 2021). Achieving large-scale sampling efforts are vital to enhance scientific comprehension of lineage diversification with a large number of species, leveraging existing genomic data and increasing the scope of cooperation in research (Givnish et al., 2016;Thompson et al., 2023). ...
... The Fabaceae family (legumes) is a large group of flowering plants, with around 19,500 species. This family is remarkably diverse and stands out as the second most economically important family of crop plants after grasses (Azani et al. 2017;Thorne 2002). The notable grain legumes -such as chickpea (Cicer arietinum), pea (Pisum sativum), peanut (Arachis hypogaea), common bean (Phaseolus vulgaris), and soybean (Glycine max) -play a critical role in human and animal nutrition, as well as in industrial applications. ...
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Soybean (Glycine max) and common bean (Phaseolus vulgaris) diverged approximately 19 million years ago. While these species share a whole-genome duplication (WGD), the Glycine lineage experienced a second, independent WGD. Despite the significance of these WGDs, their impact on gene families related to oil-traits remains poorly understood. Here, we report an in-depth investigation of oil-related gene families in soybean, common bean, and twenty-eight other legume species. We adopted a systematic approach that included transcriptome and co-expression analysis, identification of orthologous groups, gene duplication modes and evolutionary rates, and family expansions and contractions. We curated a list of oil candidate genes and found that 91.5% of the families containing these genes expanded in soybean in comparison to common bean. Notably, we observed an expansion of triacylglycerol (TAG) biosynthesis (~3:1) and an erosion of TAG degradation (~1.4:1) families in soybean in comparison to common bean. In addition, TAG degradation genes were two-fold more expressed in common bean than in soybean, suggesting that oil degradation is also important for the sharply contrasting seed oil contents in these species. We found 17 transcription factor hub genes that are likely regulators of lipid metabolism. Finally, we inferred expanded and contracted families and correlated these patterns with oil content found in different legume species. In summary, our results do not only shed light on the evolution of oil metabolism genes in soybean, but also present multifactorial evidence supporting the prioritization of candidates for crop improvement.
... In the case of R. pseudoacacia, it is possible that the high levels of free feeding damage are caused by native insects specialized for feeding on the Fabaceae. The Fabaceae is the world's third largest land plant family, and its species are native to every temperate world region (Azani et al. 2017). Therefore, there is considerable potential for native herbivore species to extend their host range to include introduced R. pseudoacacia. ...
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Plant lateral organs are often elaborated through repetitive formation of developmental units, which progress robustly in predetermined patterns along their axes. Leaflets in compound leaves provide an example of such units that are generated sequentially along the longitudinal axis, in species-specific patterns. In this context, we explored the molecular mechanisms underlying an acropetal mode of leaflet initiation in chickpea pinnate compound leaf patterning. By analyzing naturally occurring mutants multi-pinnate leaf1 (mpl1) that develop higher-ordered pinnate leaves with more than forty leaflets, we show that MPL1 encoding a C2H2-zinc finger protein sculpts a morphogenetic gradient along the proximodistal axis of the early leaf primordium, thereby conferring the acropetal leaflet formation. This is achieved by defining the spatiotemporal expression pattern of CaLEAFY, a key regulator of leaflet initiation, and also perhaps by modulating the auxin signaling pathway. Our work provides novel molecular insights into the sequential progression of leaflet formation.
... The region's geomorphological heterogeneity and palaeoclimatic changes have contributed to its unique biodiversity (Prado 2003, Queiroz 2006, Pennington et al. 2009, Guedes et al. 2014, Oliveira et al. 2015, Werneck et al. 2015, Azani et al. 2017, Queiroz et al. 2017, Fernandes et al. 2022. Diverse hypotheses and factors have been suggested to explain the diversification, demography, genetic structuring, and distribution of genetic diversity of species and populations within the Caatinga. ...
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Disjunct distributions in species lead to questions about population separation events and their consequences, affecting traits and functions depending on the disjunction time. While niche and morphology are essential, research on functional differences in disjunct populations is limited. Acacia caven, found in South America, has a disjunct distribution between Central Chile (west) and the South American Gran Chaco (east of Andes). Chapter 1 explores its origin, supporting a human-mediated dispersal from Argentina to Chile in the early Holocene. Chapter 2 examines morphological variability in Acacia caven, comparing traits divergence between western and eastern populations, confirming varieties' validity and identifying identification challenges. Of six varieties growing in the eastern range, only one has a closer affinity to the western populations, agreeing with an introduction event. Chapter 3 uses climatic niche modelling to study Acacia caven's distribution, revealing significant overlap in climatic spaces, supporting niche conservatism. A common area of occupancy is suggested in southern Bolivia and northwest Argentina since the late Pleistocene. Lastly, chapter 4 investigates Acacia caven's ecological effects as a nurse plant at a continental scale. Geographical differences in its impacts on neighbouring plant communities are emphasized, showing large-scale context dependence but suggesting substantial positive effects on both ranges. These studies provide insights into Acacia caven's origin, dispersal, morphology, ecological role, and distribution patterns in South America, contributing to its ecological significance in diverse ecosystems.
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