Fungalpedia – Note 895, Sporidesmiella

 

Sporidesmiella. P.M. Kirk.

Citation when using this data: Dong W et al. 2021 (in prep.) – Fungalpedia, Ascomycota.

Index Fungorum, Facesoffungi, MycoBank, GenBank., Fig 1

Classification: Melanommataceae, Pleosporales, Pleosporomycetidae, Dothideomycetes, Pezizomycotina, Ascomycota, Fungi

Due to the heterogeneous characteristics of Sporidesmium, Sporidesmiella was proposed for species having cuneate to obovoid conidia with fewer septa (Kirk 1982). Sporidesmiella comprises almost 50 epithets in Index Fungorum (2021). It has been shown to be polyphyletic as S. fusiformis clusters in Melanommataceae (Dothideomycetes) (Shenoy et al. 2006), while S. aquatica, S. hyalosperma and S. novae-zelandiae cluster in Junewangiaceae (Sordariomycetes) (Luo et al. 2019). Molecular data of the type species S. claviformis is needed to resolve the polyphyletic nature. Sporidesmium has been phylogenetically linked to two sexual morphs, S. lignicola and S. thailandense, which are morphologically similar to Annulatascaceae (Zhang et al. 2017, Luo et al. 2019), while the sexual morph of Sporidesmiella is undetermined. In this study, we introduce a new asexual species in Sporidesmiella based on phylogenetic analysis, a key provided by Ma et al. (2012) and the recent literature. A new collection of S. hyalosperma from freshwater in China is also provided.

Type species: Sporidesmiella claviformis P.M. Kirk, Trans. Br. mycol. Soc. 79(3): 479 (1982).

Other accepted species: Species Fungorum – search Sporidesmiella.

 

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Figure 1 – Sporidesmiella hyalosperma (MFLU 18-1200). a Colonies on submerged wood. b–f Conidiophores, conidiogenous cells and conidia. g–j Conidiogenous cells with conidia. k–p Conidia. q Germinated conidium. r, s Colony on PDA (left-front, right-reverse). Scale bars: b = 50 μm, c–f = 20 μm, g–q = 10 μm.

 

References

Index Fungorum. 2021 – http://www.indexfungorum.org/names/Names.asp. (Retrieved on January 10, 2021)

Kirk PM. 1982 – New or interesting microfungi VI. Sporidesmiella gen. nov. (Hyphomycetes). Transactions of the British Mycological Society 79, 479–489.

Luo ZL, Hyde KD, Liu JK, Maharachchikumbura SSN et al. 2019 – Freshwater Sordariomycetes. Fungal Diversity 99, 451–660.

Ma J, Zhang YD, Ma LG, Castañeda-Ruíz RF, Zhang XG. 2012 – Three new species of Sporidesmiella from southern China. Mycoscience 53, 187–193.

Shenoy BD, Jeewon R, Wu WP, Bhat DJ, Hyde KD. 2006 – Ribosomal and RPB2 DNA sequence analyses suggest that Sporidesmium and morphologically similar genera are polyphyletic. Mycological Research 110, 916–928.

Zhang H, Dong W, Hyde KD, Maharachchikumbura SSN et al. 2017 – Towards a natural classification of Annulatascaceae-like taxa: introducing Atractosporales ord. nov. and six new families. Fungal Diversity 85, 75–110.

 

Entry by

Wei Dong, Faculty of Agriculture and Food, Kunming University of Science & Technology, Kunming 650500, China, Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand, Innovative Agriculture Research Center, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand, Center of Excellence for Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand, Innovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Haizhu District, Guangzhou 510225, China

 

Published online 15 February 2021

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