Taxonomic and phylogenetic contributions to Diatrypaceae from southeastern Tibet in China

• Published in: Frontiers in microbiology 2023-03, Vol.14, p.1073548-1073548
• Main Authors: Ma, Hai-Xia, Yang, Zhan-En, Song, Zi-Kun, Qu, Zhi, Li, Yu, Zhu, An-Hong
• Format: Article
• Language: English
• Subjects: Ascomycota; Diatrypaceous fungi; Microbiology; multigene phylogeny; taxonomy; wood-decaying fungi; Xylariales
• ISSN: 1664-302X; 1664-302X
• DOI: 10.3389/fmicb.2023.1073548

In this study, we investigated the diversity of diatrypaceous fungi from southeastern Tibet in China. The phylogenetic analyses were carried out based on ITS and β-tubulin sequences of 75 taxa of Diatrypaceae from around the world. Based on a combination of morphological features and molecular evidence, a new genus- , with three new species- , , and , and a new combination- , were revealed by the materials in China. is characterized by stromatal interior olivaceous buff, stromata producing well-developed discrete, and ascospores allantoid, subhyaline. These characteristics separate the new genus from the similar genus . Comprehensive morphological descriptions, illustrations, and a phylogenetic tree to show the placement of new taxa are provided. All novelties described herein are morphologically illustrated and phylogeny investigated to better integrate taxa into the higher taxonomic framework and infer their phylogenetic relationships as well as establish new genera and species. Our results indicate that the diatrypaceous fungi harbor higher species diversity in China.