Sporidesmiellalignicola sp. nov., a new hyphomycetous fungus from freshwater habitats in China.

Xiao-Hong Li,Yang Gao,Jian-Ping Zhou,Yu-Lin Liu,Hai-Yan Song,Dian-Ming Hu,Hai-Jing Hu

doi:10.3897/bdj.9.e77414

Abstract

BackgroundFreshwater fungi, growing on submerged wood, can promote the degradation of organisms and the reuse of rotten wood energy and play key roles in freshwater ecosystems. Here, a new hyphomycetous fungus, Sporidesmiellalignicola, was isolated and identified from submerged wood samples collected in a small stream in Jiangxi Province, south-eastern China.New informationThe new taxon was studied, based on morphological characters and phylogenetic analyses combined with LSU, ITS, TEF1α and RPB2 sequences data. Sporidesmiellalignicola was morphologically characterised by its pink colonies on PDA medium in prophase, macronematous, mononematous, solitary, brown, septate, unbranched, straight or slightly flexuous conidiophores with holoblastic, polyblastic, integrated, terminal, pale brown conidiogenous cells and cylindrical, narrowly clavate, broadly obovoid to cuneiform, 3–4-distoseptate, olivaceous brown or brown conidia with rounded apex. A phylogenetic tree was constructed, based on the combination of LSU, ITS, TEF1α and RPB2 sequences data.

Highlights

The genus Sporidesmiella was introduced by Kirk to accommodate two newly-described species and four new combinations from Sporidesmium, with Sporidesmiella claviformis as the type species (Kirk 1982)
12 additional taxa have been added to Sporidesmiella, based on morphological characters, i.e. S. curtiphora (Monteiro et al 2014), S. bawanglingensis and S. nanlingensis ( Ma et al 2015), S. mammillata (Heredia et al 2015), S. physconiicola (Zhurbenko et al 2015), S. guangdongensis and S. jiangxiensis (Ma 2016a), S. lushanensis and S. jiulianshanensis ( Ma 2016b), S. novaezelandiae (Hernández-Restrepo et al 2018), S. corniformis (Ai et al 2019) and S. suttonii (Kirk 2019)
Based on investigations of freshwater fungi in Jiangxi Province (Hu et al 2012a, Huang et al 2016, Hu et al 2016, Song et al 2018, Song et al 2020), we reported a new species of Sporidesmiella lignicola sp. nov., a new hyphomycetous fungus from freshwater

Summary

Background

Freshwater fungi, growing on submerged wood, can promote the degradation of organisms and the reuse of rotten wood energy and play key roles in freshwater ecosystems. A new hyphomycetous fungus, Sporidesmiella lignicola, was isolated and identified from submerged wood samples collected in a small stream in Jiangxi Province, south-eastern China. The new taxon was studied, based on morphological characters and phylogenetic analyses combined with LSU, ITS, TEF1α and RPB2 sequences data. Morphologically characterised by its pink colonies on PDA medium in prophase, macronematous, mononematous, solitary, brown, septate, unbranched, straight or slightly flexuous conidiophores with holoblastic, polyblastic, integrated, terminal, pale brown conidiogenous cells and cylindrical, narrowly clavate, broadly obovoid to cuneiform, 3–4distoseptate, olivaceous brown or brown conidia with rounded apex. A phylogenetic tree was constructed, based on the combination of LSU, ITS, TEF1α and RPB2 sequences data

Introduction

Materials and methods

Findings

Discussion