Pleomorphic Dematiomelanomma yunnanense gen. et sp. nov. (Ascomycota, Melanommataceae) from grassland vegetation in Yunnan, China

By

Gao, Ying
Zhong, Tingfang
Bhat, D. Jayarama (Darbhe Jayarama)
Gomes De Farias, Antonio Roberto
Dawoud, Turki M.
Hyde, Kevin D
Xiong, Wei-Qiang
Li, Yunju
Gui, Heng
Yang, Xuefei
Wu, Shixi
Dhanushka N., Wanasinghe

Type

Article

Date of Publication

2023

Original Publication

MycoKeys

Volume

98

Pages

273--297

Subjects

asexual morph , Greater Mekong Subregion , molecular phylogeny , muriform , Pleosporales , sexual morph , taxonomy

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers 2011-

Identifiers

DOI: https://doi.org/10.3897/mycokeys.98.107093

 

Abstract

During a survey of microfungi associated with grasslands and related vegetation types from Yunnan Province in China, various ascomycetous and coelomycetous fungi were isolated. This study reports the discovery of four strains of ascomycetous and coelomycetous fungi from dead stalks of Hypericum monogynum L. (Hypericaceae) and Rubus parvifolius L. (Rosaceae) in the Zhaotong region of Yunnan Province, China. The isolates were characterized using multi-locus phylogenetic analyses and were found to represent a new monophyletic lineage in Melanommataceae (Pleosporales, Dothideomycetes). This new clade was named as Dematiomelanomma yunnanense gen. et sp. nov. which consists of both sexual and asexual morphs. The sexual morph is characterized by globose to subglobose ascomata with a central ostiole, cylindrical asci with a pedicel and ocular chamber, and muriform, ellipsoidal to fusiform ascospores. The asexual morph has synanamorphs including both brown, muriform macroconidia and hyaline, round to oblong or ellipsoidal microconidia. These findings contribute to the understanding of fungal diversity in grasslands and related vegetation types in Yunnan Province, China.