Additions to woody litter fungi of Byssosphaeria, Phaeoseptum and Pseudothyridariella (Pleosporales, Ascomycota) from China

By

Su, Wenxin
Tieliwadi, Ranagul
Su, Wen-Ying
Li, Xiao
Xu, Rong

Type

Article

Date of Publication

2025-9-5

Original Publication

MycoKeys

Volume

122

Pages

35--57

Subjects

molecular phylogeny , new host records , new species , pleosporalean fungi , taxonomy

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers 2011-

Identifiers

DOI: https://doi.org/10.3897/mycokeys.122.161224

 

Abstract

Pleosporales, the largest order within Ascomycota, is globally distributed and exhibits remarkable host diversity. Fagaceae, a plant family of significant ecological importance in the Northern Hemisphere, harbors a wide array of fungal species. During an investigation of pleosporalean fungi associated with woody litter from Fagaceae plants, dead wood samples with fungal fruiting bodies were collected in Henan and Jiangxi provinces, China. In this study, we describe two novel species, Pseudothyridariella fagacearum and Phaeoseptum biyangense, and report a new host record for Byssosphaeria siamensis. These taxa are formally characterized using an integrative taxonomic approach, which combines detailed morphological characterization with maximum likelihood (ML) and Bayesian inference (BI) phylogenetic analyses of multi-locus sequence data (ITS, LSU, SSU, rpb2, and tef1-α). The newly designated species can be morphologically distinguished from other members of the respective genera based on the size of the asci and ascospores. This comprehensive study enhances our understanding of microfungi associated with Fagaceae, contributing to the knowledge of China’s biodiversity.