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Conidial fungi from the semi-arid Caatinga biome of Brazil. Brachysporiellina fecunda sp. nov. and some new records for Neotropica

Authors:
  • Universidade Federal da Bahia, Vitória da Conquista, Brasil
  • Instituto de Investigaciones de Sanidad Vegetal (INISAV)

Abstract and Figures

Brachysporiellina fecunda is described and illustrated based on specimens collected on decaying leaves in the State of Bahia and Pernambuco. It is distinguished by the other species of Brachysporiellina in producing polyblastic conidiogenous cells with 4-15 conspicuous denticles and 4-septate conidia with conico−truncate bases.
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MYCOTAXON
 
Conidial fungi from the semi-arid Caatinga biome of Brazil.
Brachysporiellina fecunda sp. nov.
and some new records for Neotropica


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




















Introduction
         
         





            

        
          
        

        




Materials and methods
            


  
   

Taxonomy
Brachysporiellina fecunda


        

      

         


Holotypus:         

           



     
          
  μ        










New records for Brazil, South America and Neotropica
Endophragmiella rigidiuscula 

 

Dendryphiella vinosa



Sarcopodium circinatum
         
        
       

Stachybotrys globosa



Stachybotrys verrucispora


Acknowledgements

           


         

        


Literature cited


             

... SaBios: Rev. Saúde e Biol., v.12, n.2, p.43-52, mai./ago., 2017 ISSN:1980-0002 Frente Reverso Micromoforlogia Frente Reverso Micromoforlogia desempenham no equilíbrio ecológico como degradadores de restos orgânicos e reguladores de populações fitopatogênicas (16). Estudos recentes têm revelado novas espécies e novos registros destes fungos, ampliando consideravelmente o conhecimento da distribuição geográfica mundial de diversas espécies (17)(18)(19)(20)(21)(22)(23). ...
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This work describes a sampling of the morphological variety and fungal richness associated with rotting tree trunks in the Tapajós National Forest, characterized as an important conservation unit of the Brazilian Amazon Forest Biome. Thus, biological material from the surface of 36 decomposing tree trunks, arranged along pre-existing tracks, at a minimum distance of seven meters from one another, was collected with the aid of sterile swabs. The isolation and purification of the fungi were carried out in Potato Dextrose Agar medium plus chloramphenicol (0.1 μg.mL-1). 120 specimens were obtained, with a mean of three (± 2.9) specimens per sampled trunk, ranging from one to seven specimens per trunk. The median was equal to three. After morphological characterization, the specimens were grouped into 57 morphological groups, with an abundance of specimens per group ranging from one to seven. It was concluded that there is a great richness and a high morphological diversity of fungi in association with decomposing tree trunks in the Amazon rainforest of Pará, which can potentially reflect in high species diversity, which can and should be explored from ecological and biotechnological aspects.
... Trabalhos publicados recentemente têm revelado novas espécies e novos registros destes fungos, ampliando consideravelmente o conhecimento da distribuição geográfica mundial de diversas espécies Castañeda-Ruiz et al. 2006;Cruz et al. 2007aCruz et al. ,b, 2008Cruz et al. , 2009Gusmão et al. 2008;Leão-Ferreira et al. 2008;Marques et al. 2007). ...
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Durante investigação de fungos conidiais associados a materiais vegetais em decomposição em uma área de extrema relevância biológica no bioma Caatinga, município de Morro do Chapéu, estado da Bahia, novos registros para o continente Americano, América do Sul, Neotrópico e Brasil foram encontrados. Dendryphiopsis biseptata Morgan-Jones, R.C. Sinclair & Eicker e Virgariella atra S. Hughes são novos registros para o continente Americano; Dictyochaeta matsushimae (Hewings & J.L. Crane) Whitton, McKenzie & K.D. Hyde, Endophragmiella boothii (M.B. Ellis) S. Hughes são reportados pela primeira vez para o Neotrópico; Anungitea palustris R.F. Castañeda & W.B. Kendr., Dictyochaeta anamorfo de Chaetosphaeria dingleyae S. Hughes, W.B. Kendr. & Shoemaker, Dictyochaeta anamorfo de Chaetosphaeria pulchriseta S. Hughes, W.B. Kendr. & Shoemaker, Eversia parvula Hol.-Jech., Gyrothrix hughesii Piroz. e Minimelanolocus navicularis (R.F. Castañeda) R.F. Castañeda são novos registros para a América do Sul; Endophragmiella pallescens B. Sutton, Helicoubisia coronata Lunghini & Rambelli e Selenodriella ponmudiensis (Varghese & V.G. Rao) R.F. Castañeda & Saikawa são reportados pela primeira vez para o Brasil. Descrições, comentários, distribuição geográfica e ilustrações são apresentados para estas espécies.
... Gut. & Mercado are morphologically similar, but in the former conidia are produced from acropleurogenous or sympodial conidiogenous cells, and in the latter conidiogenous cells are percurrent (Subramanian and Bhat 1987, Mena-Portales et al. 1999, Leão-Ferreira et al. 2008), while the fossils are solitary and terminal. The apical inflation of these fossil conidia is similar to that of both(2005)consider this character to be of minor taxonomic value. ...
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The Eocene (~ 48.7 Ma, Ypresian-Lutetian) Princeton Chert of British Columbia, Canada, has long been recognized as a significant paleobotanical locality, and a diverse assemblage of anatomically preserved fossil plants has been extensively documented. Co-occurring fossil fungi also have been observed, but the full scope of their diversity has yet to be comprehensively assessed. Here, we present the first of a series of investigations of fossilized fungi associated with the silicified plants of the Princeton Chert. This report focuses on saprotrophic, facultative-aquatic hyphomycetes observed in cortical aerenchyma tissue of an enigmatic angiosperm, Eorhiza arnoldii. Our use of paleontological thin sections provides the opportunity to observe and infer developmental features, making it possible to more accurately attribute two hyphomycetes that were observed in previous studies. These comprise multiseptate, holothallic, chlamydospore-like phragmoconidia most similar to extant Xylomyces giganteus and basipetal phragmospore-like chains of amerospores like those of extant Thielaviopsis basicola. We also describe a third hyphomycete that previously has not been recognized from this locality; biseptate, chlamydosporic phragmoconidia are distinguished by darkly melanized, inflated apical cells and are morphologically similar to Brachysporiella rhizoidea or Culcitalna achraspora.
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Two new genera and species, Zelotetraploa aquatica and Blastoheterospora catenata, are described and illustrated. Zelotetraploa aquatica is distinguished by monoblastic, globose conidiogenous cells and rectangular to oblong, euseptate, dictyoseptate conidia composed of four rows of cells that develop independently. Blastoheterospora catenata, which arises conspicuously from the conidial cell rows of Z. aquatica, is characterized by branched blastocatenate conidia that are polymorphic (unicellular, phragmoseptate, dictyoseptate, or subchiroid) and variegated, with a Conioscyphopsis-like synanamorph arising rarely from dictyoseptate conidia.
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During inventory of conidial fungi at Serra da Fumaça, Pindobaçu, Bahia State, and Brazil, 44 species were found. Five species are new records for Americas: Dendryphiosphaera parvula Nawawi & Kuthub., Diplococcium dendrocalami Goh, K.D Hyde & Umali, Sporidesmiella aspera Kuthub. & Nawawi, S fusiformis W.P. Wu, and Triposporium verruculosum RF Castañeda, Gené & Guarro. Stanjehughesia hormiscioides (Corda) Subram. is a new record for Neotropics; Hemibeltrania decorosa RF Castañeda & WB Kendr. is a new record for South America and Spadicoides macroobovata Matsush is a new record for Brazil. Descriptions, illustrations, geographical distribution and comments are presented for new records. A list of species founded is included too.
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