Taxonomic and phylogenetic characterisations of six species of Pleosporales (in Didymosphaeriaceae, Roussoellaceae and Nigrogranaceae) from China

MycoKeys. 2023 Nov 29:100:123-151. doi: 10.3897/mycokeys.100.109423. eCollection 2023.

Abstract

Pleosporales comprise a diverse group of fungi with a global distribution and significant ecological importance. A survey on Pleosporales (in Didymosphaeriaceae, Roussoellaceae and Nigrogranaceae) in Guizhou Province, China, was conducted. Specimens were identified, based on morphological characteristics and phylogenetic analyses using a dataset composed of ITS, LSU, SSU, tef1 and rpb2 loci. Maximum Likelihood (ML) and Bayesian analyses were performed. As a result, three new species (Neokalmusiakarka, Nigrogranaschinifolium and N.trachycarpus) have been discovered, along with two new records for China (Roussoellaneopustulans and R.doimaesalongensis) and a known species (Roussoellapseudohysterioides). Morphologically similar species and phylogenetically close taxa are compared and discussed. This study provides detailed information and descriptions of all newly-identified taxa.

Keywords: phylogeny; saprophytic fungi; taxonomy; three new taxa.

Grants and funding

National Natural Science Foundation of China (31960005, 32000009 and 32170019); Guizhou Province Ordinary Colleges and Universities Youth Science and Technology Talent Growth Project [2021]154; Science and Technology Department Foundation of Guizhou Province ([2018]2322); Qianhe Talents, Science and Technology Department of Guizhou Province ([2015]4029); Guizhou Provincial Education Department Scientific Research Project for Higher Education Institutions ([2022]064). National Natural Science Foundation of China Karst Centre Project U1812403-4-4