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Issue: Vol. 645 No. 2: 23 Apr. 2024
Type: Article
Published: 2024-04-23
DOI: 10.11646/phytotaxa.645.2.2
Page range: 120-130
Abstract views: 24
PDF downloaded: 3

Introduction of a novel freshwater species Setoseptoria guangxiensis sp. nov., with Setoseptoria baiyunensis nom. nov., in Lentitheciaceae, Pleosporales

Innovative Institute for Plant Health / Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China, Ministry of Agriculture and Rural Affairs, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, Guangdong, China, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand, School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
Germplasm Bank of Wild Species, Yunnan Key Laboratory for Fungal Diversity and Green Development, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand, School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
Innovative Institute for Plant Health / Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China, Ministry of Agriculture and Rural Affairs, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, Guangdong, China
Innovative Institute for Plant Health / Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China, Ministry of Agriculture and Rural Affairs, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, Guangdong, China
Innovative Institute for Plant Health / Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China, Ministry of Agriculture and Rural Affairs, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, Guangdong, China
Fungi 1 new name 1 new species aquatic fungi key multi-locus phylogeny taxonomy

Abstract

The investigation of freshwater fungal diversity in Guangxi Province, China, reveals an interesting ascomycetous species. The morphological and phylogenetic analyses incorporating combined LSU, SSU, ITS and tef1-α sequence data have identified it as a novel species within Setoseptoria, namely S. guangxiensis. Setoseptoria guangxiensis is distinct within the genus by its uni-loculate ascomata, which have a prominent papilla and lack a clypeus-like structure, as well as 1-septate ascospores that are surrounded by a defined gelatinous sheath. In addition, Setoseptoria baiyunensis nom. nov. is proposed for a collection MHZU 22-0133 as the previous name “Setoseptoria bambusae” is invalidly published. A key to the sexual morph of species within Setoseptoria is provided.

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