Fig 4 - uploaded by Ludwig Beenken
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Chaconia heliconiae (FG09/96). Section through telium showing young and germinated probasidia and basidia embedded in a gelatinous matrix (indicated by dotting). Basidia are generally bent and their remnants often border the outside of the sorus. Development of telium originates between the epidermis (ed) and the hypodermis (hd). D-haustoria are indicated by arrows. The section is oriented upside down for easier orientation. Bar 20 μm
Source publication
Chaconia clusiae on Clusia cf. palmicida (Clusiaceae) and C. heliconiae on Heliconia psittacorum, H. bihai and Heliconia sp. (Heliconiaceae) are described as new from French Guiana in northern South America. Clusiaceae and Heliconiaceae are new host families for members of Chaconia, Heliconiaceae is the first one from Monocotyledoneae. Chaconia clu...
Contexts in source publication
Context 1
... heliconiae Berndt, sp. nov. (Figs. 4, 5, 6 and 7). Etymology: Heliconia, the host genus. Mycobank MB 519742 Spermogonia and aecia unknown. Uredinia mainly scat- tered on abaxial side of leaves, tiny, subepidermal, Uredo- type, lacking sterile bounding structures; urediniospores short- ly and inconspicuously stalked, broadly ellipsoid, obovoid or ellipsoid, more rarely ...
Citations
... Literatura especializada com chaves de identificação e descrições de espécies foram consultadas, como Hennen & Ono (1978), Buriticá & Hennen (1980), Hennen & Sotão (1996), Berndt et al. (2002), Cummins & Hiratsuka (2003), Hennen et al. (2005), Salazar-Yepes & Carvalho-Jr (2010) e Berndt & Beenken (2013). ...
Resumo Este trabalho apresenta as espécies de fungos Pucciniales que ocorrem parasitando plantas em uma área de floresta do bioma Amazônia, localizada na Reserva Florestal Adolpho Ducke (RFAD), em Manaus (AM), Brasil. Dezessete espécies foram identificadas: Aecidium annonae, A. amazonense, A. juruense, A. xylopiae, Crossopsora piperis, Desmella aneimiae, Dietelia duguetiae, Edythea palmaea, Porotenus biporus, P. memorae, Puccinia bambusarum, P. heliconiae, P. thaliae, Sphenospora smilacina, Uredo borreriae, U. maceiensis e U. pusilla. Todas representam primeiro registro para a área de estudo. A lista inclui novos registros para o Brasil (U. pusilla), para a região Amazônica (D. duguetiae) e para o estado do Amazonas (A. annonae, A. xylopiae, C. piperis, E. palmaea, P. biporus e S. smilacina). Espécies de ferrugem foram registradas em 17 gêneros e 12 famílias botânicas (Annonaceae, Arecaceae, Bignoniaceae, Euphorbiaceae, Fabaceae, Heliconiaceae, Marantaceae, Piperaceae, Poaceae, Rubiaceae, Smilacaceae e Tectariaceae). Na família Annonaceae ocorreram cinco espécies de ferrugem, e na família Bignoniaceae ocorreram duas e para as Pucciniales destas duas famílias foi elaborada uma chave de identificação. São apresentadas descrições, distribuição geográfica, comentários taxonômicos e ilustrações para os novos registros para o Brasil e Amazônia.
... The genera of Chaconiaceae are poorly circumscribed (Ono 2006;Berndt and Beenken 2013). Chrysocelis and Chaconia differ in morphology of their spermogonia and aecia, and therefore the assignment of species to genera is difficult in the absence of these structures. ...
... If spermogonia and aecia are unknown, as is the case in Stomatisora, an affiliation with species that are grouped in Chaconiaceae or Mikronegeriaceae would only be tentative. Berndt and Beenken (2013) came to similar conclusions in the case of newly described species in Chaconia for which Chrysocelis could also have been chosen as being the correct placement. The Phakopsoraceae as defined by Cummins and Hiratsuka (2003) has the same morphological type of spermogonia as the Chaconiaceae (Group VI, Types 5 and 7). ...
The morphology of the type specimen of Stomatisora geophilicola, the only species of the genus Stomatisora (Pucciniales) recognised till now, was restudied. Thin-walled probasidia (teliospores) develop exclusively in substomatal chambers, and mature metabasidia emerge through the stomata and develop suprastomatally. Uredinia are erumpent through the upper epidermis. A new species, S. psychotriicola, parasitizing Psychotria capensis (Rubiaceae) from South Africa, is described and illustrated. Only telia have been found which also develop in stomatal cavities, and, as in the type species, have partly repetitive probasidia and suprastomatal metabasidia that easily detach from fragile stalks. The similarities of telial morphology, as well as the same host family, indicate a close relationship and a generic separation from other rust genera. Molecular data support this interpretation and a possible relationship within a phakopsoroid clade.
... The genera of Chaconiaceae are poorly circumscribed (Ono 2006;Berndt and Beenken 2013). Chrysocelis and Chaconia differ in morphology of their spermogonia and aecia, and therefore the assignment of species to genera is difficult in the absence of these structures. ...
... If spermogonia and aecia are unknown, as is the case in Stomatisora, an affiliation with species that are grouped in Chaconiaceae or Mikronegeriaceae would only be tentative. Berndt and Beenken (2013) came to similar conclusions in the case of newly described species in Chaconia for which Chrysocelis could also have been chosen as being the correct placement. The Phakopsoraceae as defined by Cummins and Hiratsuka (2003) has the same morphological type of spermogonia as the Chaconiaceae (Group VI, Types 5 and 7). ...
Inventories of Pucciniales in areas of Cerrado, Atlantic Forest and the Amazon forest were carried out to fill the knowledge gap about this order and update the hosts and geographic distribution of the recorded species. After the analysis of 424 samples of plants infected with Pucciniales, we identified 122 species distributed in 37 (anamorphic and teleomorphic) genera parasitizing host plants of 101 genera of 43 botanical families. This study is the first to present results of inventories at national level and gathers information about 15% of the total number of Pucciniales registered in Brazil. The Atlantic Forest had the largest number of species of Pucciniales (63), followed by Cerrado (60) and the Amazon forest (31). The three biomes showed unique mycobiotas. We present new occurrences of species for Brazil, for the regions of the Amazon Forest, Cerrado and Atlantic Forest, and for the local areas studied. The results also increase the number of hosts of previously registered rust fungi.
The Basidiomycota constitutes a major phylum of the kingdom Fungi and is second in species numbers to the Ascomycota. The present work provides an overview of all validly published, currently used basidiomycete genera to date in a single document. An outline of all genera of Basidiomycota is provided, which includes 1928 currently used genera names, with 1263 synonyms, which are distributed in 241 families, 68 orders, 18 classes and four subphyla. We provide brief notes for each accepted genus including information on classification, number of accepted species, type species, life mode, habitat, distribution, and sequence information. Furthermore, three phylogenetic analyses with combined LSU, SSU, 5.8s, rpb1, rpb2, and ef1 datasets for the subphyla Agaricomycotina, Pucciniomycotina and Ustilaginomycotina are conducted, respectively. Divergence time estimates are provided to the family level with 632 species from 62 orders, 168 families and 605 genera. Our study indicates that the divergence times of the subphyla in Basidiomycota are 406–430 Mya, classes are 211–383 Mya, and orders are 99–323 Mya, which are largely consistent with previous studies. In this study, all phylogenetically supported families were dated, with the families of Agaricomycotina diverging from 27–178 Mya, Pucciniomycotina from 85–222 Mya, and Ustilaginomycotina from 79–177 Mya. Divergence times as additional criterion in ranking provide additional evidence to resolve taxonomic problems in the Basidiomycota taxonomic system, and also provide a better understanding of their phylogeny and evolution.
