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Mao N, Xu YY, Zhang YX, Zhou H, Huang XB, Hou CL, Fan L. Phylogeny and species diversity of the genus Helvella with emphasis on eighteen new species from China. Fungal Syst Evol 2023; 12:111-152. [PMID: 38533478 PMCID: PMC10964050 DOI: 10.3114/fuse.2023.12.08] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 08/17/2023] [Indexed: 03/28/2024] Open
Abstract
Helvella is a widespread, frequently encountered fungal group appearing in forests, but the species diversity and molecular phylogeny of Helvella in China remains incompletely understood. In this work, we performed comprehensive phylogenetic analyses using multilocus sequence data. Six datasets were employed, including a five-locus concatenated dataset (ITS, nrLSU, tef1-α, rpb2, hsp), a two-locus concatenated dataset (ITS, nrLSU), and four single-locus datasets (ITS) that were divided based on the four different phylogenetic clades of Helvella recognized in this study. A total of I 946 sequences were used, of which 713 were newly generated, including 170 sequences of ITS, 174 sequences of nrLSU, 131 sequences of tef1-α, 107 sequences of rpb2 and 131 sequences of hsp. The phylogeny based on the five-locus concatenated dataset revealed that Helvellas. str. is monophyletic and four phylogenetic clades are clearly recognized, i.e., Acetabulum clade, Crispa clade, Elastica clade, and Lacunosa clade. A total of 24 lineages or subclades were recognized, II of which were new, the remaining 13 corresponding with previous studies. Chinese Helvella species are distributed in 22 lineages across four clades. Phylogenetic analyses based on the two-locus concatenated dataset and four single-locus datasets confirmed the presence of at least 93 phylogenetic species in China. Among them, 58 are identified as known species, including a species with a newly designated lectotype and epitype, 18 are newly described in this paper, and the remaining 17 taxa are putatively new to science but remain unnamed due to the paucity or absence of ascomatal materials. In addition, the Helvella species previously recorded in China are discussed. A list of 76 confirmed species, including newly proposed species, is provided. The occurrence of H. crispa and H. elastica are not confirmed although both are commonly recorded in China. Citation: Mao N, Xu YY, Zhang YX, Zhou H, Huang XB, Hou CL, Fan L (2023). Phylogeny and species diversity of the genus Helvella with emphasis on eighteen new species from China. Fungal Systematics and Evolution 12: 111-152. doi: 10.3114/fuse.2023.12.08.
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Affiliation(s)
- N Mao
- College of Life Science, Capital Normal University, Xisanhuanbeilu 105, Haidian, Beijing 100048, China
| | - Y Y Xu
- College of Life Science, Capital Normal University, Xisanhuanbeilu 105, Haidian, Beijing 100048, China
| | - Y X Zhang
- College of Life Science, Capital Normal University, Xisanhuanbeilu 105, Haidian, Beijing 100048, China
| | - H Zhou
- College of Life Science, Capital Normal University, Xisanhuanbeilu 105, Haidian, Beijing 100048, China
| | - X B Huang
- College of Life Science, Capital Normal University, Xisanhuanbeilu 105, Haidian, Beijing 100048, China
| | - C L Hou
- College of Life Science, Capital Normal University, Xisanhuanbeilu 105, Haidian, Beijing 100048, China
| | - L Fan
- College of Life Science, Capital Normal University, Xisanhuanbeilu 105, Haidian, Beijing 100048, China
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Wang XC, Liu TZ, Chen SL, Li Y, Zhuang WY. A four-locus phylogeny of rib-stiped cupulate species of Helvella (Helvellaceae, Pezizales) with discovery of three new species. MycoKeys 2019; 60:45-67. [PMID: 31723337 PMCID: PMC6838221 DOI: 10.3897/mycokeys.60.38186] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 09/18/2019] [Indexed: 11/12/2022] Open
Abstract
Helvella species are ascomycetous macrofungi with saddle-shaped or cupulate apothecia. They are distributed worldwide and play an important ecological role as ectomycorrhizal symbionts. A recent multi-locus phylogenetic study of the genus suggested that the cupulate group of Helvella was in need of comprehensive revision. In this study, all the specimens of cupulate Helvella sensu lato with ribbed stipes deposited in HMAS were examined morphologically and molecularly. A four-locus phylogeny was reconstructed using partial sequences of the heat shock protein 90, nuclear rDNA internal transcribed spacer region 2, nuclear large subunit ribosomal DNA and translation elongation factor 1-α genes. Three clades were revealed in Helvella sensu stricto. Twenty species were included in the analysis, of which 13 are distributed in China. Three new species, H.acetabuloides, H.sichuanensis and H.tianshanensis, are described and illustrated in detail. A neotype was designated for H.taiyuanensis. Helvellacalycina is a new record for China, while Dissingialeucomelaena should be excluded from Chinese mycota. Hsp90 and ITS2 are recommended as useful supplementary barcodes for species identifications of the genus.
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Affiliation(s)
- Xin-Cun Wang
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China Institute of Microbiology, Chinese Academy of Sciences Beijing China
| | - Tie-Zhi Liu
- College of Life Sciences, Chifeng University, Chifeng, Inner Mongolia 024000, China Chifeng University Chifeng China
| | - Shuang-Lin Chen
- College of Life Sciences, Nanjing Normal University, Nanjing, Jiangsu 210023, China Nanjing Normal University Nanjing China
| | - Yi Li
- College of Food Science and Engineering, Yangzhou University, Yangzhou, Jiangsu 225127, China Yangzhou University Yangzhou China
| | - Wen-Ying Zhuang
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China Institute of Microbiology, Chinese Academy of Sciences Beijing China
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