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Phylogenetic and Morphological Perspectives on Crepidotus subg. Dochmiopus: Exploratively Unveiling Hidden Diversity in China

文献类型： 外文期刊

作者： Han, Menghui 1 ; Na, Qin 1 ; Wei, Renxiu 1 ; Zeng, Hui 2 ; Hu, Yaping 4 ; Zhang, Libo 5 ; Du, Jinhong 5 ; Zou, Li 6 ; Tang, Weimin 7 ; Cheng, Xianhao 1 ; Ge, Yupeng 1 ;

作者机构： 1.Ludong Univ, Inst Mycol Sci & Technol, Sch Hort, Yantai 264025, Peoples R China

2.Fujian Acad Agr Sci, Inst Edible Fungi, Fuzhou 350014, Peoples R China

3.Natl & Local Joint Engn Res Ctr Breeding & Cultiva, Fuzhou 350014, Peoples R China

4.Nanjing Inst Environm Sci, State Environm Protect Sci Observat & Res Stn Ecol, Minist Ecol & Environm, Nanjing 210042, Peoples R China

5.Chinese Res Inst Environm Sci, Inst Ecol, Beijing 100012, Peoples R China

6.Northeast Forestry Univ, Coll Forestry, Harbin 150040, Peoples R China

7.Wufeng Tujia Autonomous Cty Environm Monitoring St, Yichang 443400, Peoples R China

关键词： new taxa; taxonomy; systematics; dark-spored agarics; saprophytic fungi

期刊名称：JOURNAL OF FUNGI （ 影响因子：4.0； 五年影响因子：4.5 ）

ISSN：

年卷期： 2024 年 10 卷 10 期

页码：

收录情况： SCI

摘要： Crepidotus subg. Dochmiopus contributes to more than half of Crepidotus species and exhibits highly hidden diversity. However, C. subg. Dochmiopus is challenging to study because the basidiomata of C. subg. Dochmiopus species are usually small and white, inconspicuous interspecific distinctions, and possess a familiar complex. In this study, we utilized a variety of characteristics for species identification, including habitat, presence or absence of a stipe in mature specimens, pileipellis and cheilocystidia patterns, whether the lamellae edges are fimbriated, and other characteristics. Above all, cheilocystidia and pileipellis patterns will be important in C. subg. Dochmiopus research. Based on the present specimens, we constructed a multigene phylogenetic tree (ITS + LSU) and recognized four new species: C. lamellomaculatus sp. nov., C. capitatocystidiatus sp. nov., C. succineus sp. nov., C. clavocystidiatustustus sp. nov. Detailed morphological descriptions, photographs, line drawings and comparisons with closely related taxa for the new species are provided. The current phylogenetic analysis does not support the previously classifications, indicating that the classification of Crepidotus requires re-evaluation. But the existing molecular datasets and species' descriptions are insufficient to fully resolve the classification. Further integration of new gene segments and a comprehensive review of morphological characteristics will reveal a natural classification for Crepidotus.

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