Abstract
Mallocybe, a member of the ectomycorrhizal mushroom family Inocybaceae, is a newly elevated genus based on Inocybe subg. Mallocybe. Although new species of Mallocybe have continuously been discovered worldwide during recent decades, species native to China are poorly documented. Members of the genus are frequently characterized by the presence of phaseoliform basidiospores and short, catenate cheilocystidia. Here, we describe three new Mallocybe species from China featuring elongate cheilocystidia that were revealed through morphological and molecular analyses: M. pallidipes collected from Populus in northeastern China, M. aurantiodisca discovered in subtropical evergreen broad-leaved forests dominated by Castanopsis in Zhejiang and Guizhou provinces, and M. longicystis found in fagaceous forests in tropical and subtropical China. According to a multi-gene phylogenetic analysis, which resolved the genus into three major clades, the three new species group with three North American species in a fully supported clade. Finally, we discuss the systematic position of the new species and infrageneric phylogeny of the genus.
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Data availability
The sequence data generated in this study are deposited in NCBI GenBank. The final alignment was included in Supplemental Material.
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Acknowledgements
We thank Dr. Yu-Peng Ge and Dr. Qin Na (Ludong University) for providing valuable specimens and valuable references, and Mr. Chuang-Teng Huang (Hainan Academy of Forestry & Hainan Academy of Mangrove) for his kind help in the identification of host plants.
Funding
This study was supported by the National Natural Science Foundation of China (Nos. 31860009 & 32260005), the Hainan Basic and applied research project for cultivating high-level talents (No. 2019RC230), the Project of Science and Technology Programs of Guizhou province [(2019)2451-2], and the Innovative Research Projects for Graduate Students in Hainan Province, China (No. HYYB2022A29).
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Conceptualization: Y-G.F. and T.B. Methodology: Y-G.F. Performing the experiment: J-H.H. Formal analysis: J-H.H., W-J.Y., and L-S.D. Resources: Y-G.F., L-P.T., C-Y. D., W-F.L., and T.B. Writing—original draft preparation: J-H.H. and W-J.Y. Writing—review and editing: Y-G.F. and T.B. Supervision: Y-G.F. and T.B. Project administration: Y-G.F. Funding acquisition: Y-G.F., C-Y.D., and L-S.D. All authors have read and agreed to the published version of the manuscript.
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Hu, JH., Yu, WJ., Deng, LS. et al. The detection of major clades and new species of Mallocybe (Inocybaceae, Agaricales) from China with elongate cheilocystidia. Mycol Progress 22, 15 (2023). https://doi.org/10.1007/s11557-022-01854-5
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DOI: https://doi.org/10.1007/s11557-022-01854-5