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

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. Here, 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. New information The new taxon was studied, based on morphological characters and phylogenetic analyses combined with TEF1 alpha and RPB2 data. was morphologically characterised by its pink colonies on PDA mediumin 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, TEF1 alpha and RPB2 sequences data.

Automated summary

The new hyphomycetous fungus Sporidesmiella lignicola was isolated and identified from submerged wood samples collected in a small stream in Jiangxi Province, China. It was characterized by its pink colonies on PDA medium and unique morphological features, such as unbranched, straight or slightly flexuous conidiophores with pale brown conidiogenous cells and olivaceous brown or brown conidia. Phylogenetic analysis using LSU, ITS, TEF1 alpha, and RPB2 sequences data was conducted to further study the taxonomic relationship of this new fungus.