A new lignicolous freshwater fungus, Helicosporium (Tubeufiaceae, Tubeufiales) from Guizhou Province, China

Le résumé fourni par la source

A new lignicolous freshwater species of Helicosporium exhibiting an asexual morph was isolated from submerged woody substrates collected in Guizhou Province, China. Phylogenetic analyses based on a combined LSU, ITS, tef1-ɑ, and rpb2 sequences data revealed that the isolates form a well-supported, distinct lineage within Helicosporium. Morphological comparisons further showed a unique combination of characters, including macronematous, unbranched conidiophores, monoblastic or polyblastic conidiogenous cells with denticulate or bladder-like protrusions, and helicoid, aseptate, guttulate, hyaline conidia, distinguishing the fungus from currently known congeners. Based on the concordance of morphological and phylogenetic evidence, the collections are introduced herein as a new species of Helicosporium. Detailed descriptions, illustrations, notes, and phylogenetic analyses are provided to support its taxonomic placement.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.