Taxonomy and multi-gene phylogeny of Micropsalliota (Agaricales, Agaricaceae) with description of six new species from China

Jun-Qing Yan; Zhi-Heng Zeng; Ya-Ping Hu; Bin-Rong Ke; Hui Zeng; Sheng-Nan Wang

doi:10.3389/fmicb.2022.1011794

Taxonomy and multi-gene phylogeny of Micropsalliota (Agaricales, Agaricaceae) with description of six new species from China

Front Microbiol. 2022 Nov 7:13:1011794. doi: 10.3389/fmicb.2022.1011794. eCollection 2022.

Authors

Jun-Qing Yan^{1

2

3

4}, Zhi-Heng Zeng^{3

4}, Ya-Ping Hu^{5

6}, Bin-Rong Ke^{3

4}, Hui Zeng^{3

4}, Sheng-Nan Wang^{1

2}

Affiliations

¹ Jiangxi Key Laboratory for Conservation and Utilization of Fungal Resource, Jiangxi Agricultural University, Nanchang, China.
² Key Laboratory of State Forestry Administration on Forest Ecosystem Protection and Restoration of Poyang Lake Watershed, Jiangxi Agricultural University, Nanchang, China.
³ Institute of Edible Mushroom, Fujian Academy of Agricultural Sciences, Fuzhou, China.
⁴ National and Local Joint Engineering Research Center for Breeding and Cultivation of Features Edible Mushroom, Fuzhou, China.
⁵ Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing, China.
⁶ State Environmental Protection Scientific Observation and Research Station for Ecological Environment of Wuyi Mountains, Nanjing, China.

Abstract

Micropsalliota is a relatively small genus containing only 62 previously identified species. Here, we describe six new taxa of Micropsalliota based on morphological and phylogenetic analyses: M. minor, M. ovalispora, M. pseudodelicatula, M. rufosquarrosa, M. tenuipes, and M. wuyishanensis and a new record taxon to China. The first Maximum likelihood and Bayesian analyses of a three-gene dataset (ITS, LSU, and rpb2) separated the genus into 18 weakly to strongly supported major clades and subclades, but only a few subclades were synapomorphies. According to phylogenetic analyses, M. cornuta does not belong in Micropsalliota. A key to 20 species of Micropsalliota in China is provided.

Keywords: East Asia; basidiomycete; biodiversity; fungal phylogeny; new taxa; taxonomy.