Liu F, Cai L, Crous P W, Damm U
Chinese Academy of Sciences, Institute of Microbiology, State Key Laboratory of Mycology, Beijing, 100101, China; ; Utrecht University, Department of Biology, Microbiology, Padualaan 8, 3584 CH Utrecht, The Netherlands.
Chinese Academy of Sciences, Institute of Microbiology, State Key Laboratory of Mycology, Beijing, 100101, China;
Persoonia. 2014 Dec;33:83-97. doi: 10.3767/003158514X684447. Epub 2014 Aug 29.
In a preliminary analysis, 21 Colletotrichum strains with large conidia preserved in the CBS culture collection clustered with a recently described species, C. gigasporum, forming a clade distinct from other currently known Colletotrichum species complexes. Multi-locus phylogenetic analyses (ITS, ACT, TUB2, CHS-1, GAPDH) as well as each of the single-locus analyses resolved seven distinct species, one of them being C. gigasporum. Colletotrichum gigasporum and its close allies thus constitute a previously unknown species complex with shared morphological features. Five of the seven species accepted in the C. gigasporum species complex are described here as novel species, namely C. arxii, C. magnisporum, C. pseudomajus, C. radicis and C. vietnamense. A species represented by a single sterile strain, namely CBS 159.50, was not described as novel species, and is treated as Colletotrichum sp. CBS 159.50. Furthermore, C. thailandicum is reduced to synonymy with C. gigasporum.
在初步分析中，保存在CBS培养物保藏中心的21株具大型分生孢子的炭疽菌菌株与最近描述的一个物种——巨大炭疽菌（Colletotrichum gigasporum）聚类在一起，形成了一个与其他目前已知的炭疽菌物种复合体不同的分支。多位点系统发育分析（ITS、ACT、TUB2、CHS-1、GAPDH）以及每个单基因座分析都解析出了7个不同的物种，其中之一是巨大炭疽菌。因此，巨大炭疽菌及其近缘种构成了一个具有共同形态特征的此前未知的物种复合体。巨大炭疽菌物种复合体中所认可的7个物种中的5个在此被描述为新物种，即阿氏炭疽菌（C. arxii）、大孢子炭疽菌（C. magnisporum）、假大炭疽菌（C. pseudomajus）、根炭疽菌（C. radicis）和越南炭疽菌（C. vietnamense）。一个由单一不育菌株（即CBS 159.50）代表的物种未被描述为新物种，被视为炭疽菌CBS 159.50。此外，泰国炭疽菌（C. thailandicum）被归为巨大炭疽菌的异名。
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