AUTHOR=Ma Hai-Xia , Yang Zhan-En , Song Zi-Kun , Qu Zhi , Li Yu , Zhu An-Hong 

TITLE=Taxonomic and phylogenetic contributions to Diatrypaceae from southeastern Tibet in China

JOURNAL=Frontiers in Microbiology

VOLUME=14

YEAR=2023

URL=https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2023.1073548

DOI=10.3389/fmicb.2023.1073548

ISSN=1664-302X

ABSTRACT=<p>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—<italic>Alloeutypa</italic>, with three new species—<italic>A. milinensis</italic>, <italic>Diatrype linzhiensis</italic>, and <italic>Eutypella motuoensis</italic>, and a new combination—<italic>A. flavovirens</italic>, were revealed by the materials in China. <italic>Alloeutypa</italic> 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 <italic>Eutypa</italic>. 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.</p>