Two new species and three new records of Diachea (Physarales) from China based on morphological and molecular evidence
文献类型： 外文期刊
作者： Li, Xuefei 1 ; Dai, Dan 1 ; Tuo, Yonglan 1 ; Li, You 1 ; Hu, Jiajun 1 ; Sossah, Frederick Leo 1 ; Zhang, Bo 1 ; Li, Xiao 1 ; Li, Yu 1 ;
作者机构： 1.Jilin Agr Univ, Engn Res Ctr, Chinese Minist Educ Edible & Med Fungi, Changchun, Peoples R China
2.Jilin Agr Univ, Coll Mycol, Changchun, Peoples R China
3.Jiangxi Acad Agr Sci, Inst Agr Appl Microbiol, Nanchang, Peoples R China
4.Zhejiang Normal Univ, Sch Life Sci, Jinhua, Peoples R China
5.Oil Palm Res Inst, Council Sci & Ind Res CSIR, Coconut Res Programme, Sekondi, Ghana
6.Ind Dev Inst Plants Anim & Fungi Integrat Biyang C, Zhumadian, Peoples R China
关键词： diversity; morphology; multigene phylogeny; new taxa; taxonomy
期刊名称：FRONTIERS IN MICROBIOLOGY （ 影响因子：4.5； 五年影响因子：5.2 ）
ISSN：
年卷期： 2024 年 15 卷
页码：
收录情况： SCI
摘要： Diachea is an important genus of myxomycetes, recognized for its ecological role and wide distribution. This study aimed to expand knowledge of species diversity within this genus in China. We collected Diachea specimens from various locations in Shaanxi and Sichuan provinces and characterized them through morphological analysis and phylogenetic analysis using four genetic markers: small subunit ribosomal RNA (nSSU), translation elongation factor 1-alpha (EF-1 alpha), mitochondrial small subunit (mtSSU), and alpha-tubulin gene (alpha-Tub). Based on these analyses, we describe two new species, namely, Diachea plectophylla and D. sichuanensis, discovered in the Shaanxi and Sichuan provinces, respectively. Diachea plectophylla is distinguished by its dense, rigid capillitium, spore warts, and distinct separation of capillitium ends from the peridium. Diachea sichuanensis, closely related to D. leucopodia, is identified by its blunt-headed columella, clustered spore warts, and robust stalks. In addition to these new species, we recorded five previously documented species, including D. bulbillosa in Gansu province, D. leucopodia in Yunnan and Sichuan provinces, and D. subsessilis in Sichuan province. Detailed descriptions, micrographs, taxonomic comparisons, and an identification key are provided to aid in accurate identification. The discovery of these new species not only enhances the known diversity of slime molds in the region but also provides valuable information for future studies on their geographical distribution and ecological relationships.
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