Phylogeny, Global Biogeography and Pleomorphism of Zanclospora

Microorganisms

Jana Nekvindová¹  Martina Réblová²  Andrew N. Miller³  Miroslav Kolařík⁴  Margarita Hernández-Restrepo⁵ 

[1] Department of Clinical Biochemistry and Diagnostics, University Hospital Hradec Králové, 500 05 Hradec Králové, Czech Republic;Department of Taxonomy, Institute of Botany, The Czech Academy of Sciences, 252 43 Průhonice, Czech Republic;Illinois Natural History Survey, University of Illinois Urbana-Champaign, Champaign, IL 61820, USA;Laboratory of Fungal Genetics and Metabolism, Institute of Microbiology, The Czech Academy of Sciences, 142 20 Prague 4, Czech Republic;Westerdijk Fungal Biodiversity Institute, 3508 AD Utrecht, The Netherlands;

关键词: Chaetosphaeriales;    conidiogenesis;    geographic distribution;    GlobalFungi;    life cycle;    molecular systematics;   

DOI  :  10.3390/microorganisms9040706

来源: DOAJ

【 摘 要 】

Zanclospora (Chaetosphaeriaceae) is a neglected, phialidic dematiaceous hyphomycete with striking phenotypic heterogeneity among its species. Little is known about its global biogeography due to its extreme scarcity and lack of records verified by molecular data. Phylogenetic analyses of six nuclear loci, supported by phenotypic data, revealed Zanclospora as highly polyphyletic, with species distributed among three distantly related lineages in Sordariomycetes. Zanclospora is a pleomorphic genus with multiple anamorphic stages, of which phaeostalagmus-like and stanjehughesia-like are newly discovered. The associated teleomorphs were previously classified in Chaetosphaeria. The generic concept is emended, and 17 species are accepted, 12 of which have been verified with DNA sequence data. Zanclospora thrives on decaying plant matter, but it also occurs in soil or as root endophytes. Its global diversity is inferred from metabarcoding data and published records based on field observations. Phylogenies of the environmental ITS1 and ITS2 sequences derived from soil, dead wood and root samples revealed seven and 15 phylotypes. The field records verified by DNA data indicate two main diversity centres in Australasia and Caribbean/Central America. In addition, environmental ITS data have shown that Southeast Asia represents a third hotspot of Zanclospora diversity. Our data confirm that Zanclospora is a rare genus.

【 授权许可】

Unknown