A fifty-locus phylogenetic analysis provides deep insights into the phylogeny of Tricholoma (Tricholomataceae, Agaricales)

doi:10.3767/persoonia.2023.50.01

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	A fifty-locus phylogenetic analysis provides deep insights into the phylogeny of Tricholoma (Tricholomataceae, Agaricales)
	Ding,X. X.; Xu,X.; Kost,G.; Cui,Y. Y.; Wang,P. M.; Yang,Z. L.
	2023
发表期刊	PERSOONIA
卷号	50 页码:1-26
摘要	As an ectomycorrhizal fungal genus that contains matsutake and other edible mushrooms, Tricholoma has great economic and ecological significance. However, the phylogenetic relationships within the genus remain unsettled. To clarify the infrageneric relationships of Tricholoma, including the identification of monophyletic sub-genera and sections, three phylogenetic analyses were conducted employing single-locus (ITS), five-locus (ITS/ RPB2/EF-1 & alpha;/ MCM7/ mtSSU) and 50-locus (45 single-copy orthologous genes plus the aforementioned ones) DNA nucleotide sequences. Our data indicated that ITS sequences could serve the species delimitation of Tricholoma in most cases and monophyletic groups recognition in some cases, and the five-locus dataset could resolve a section-level phylogeny of this genus, while the 50-locus dataset could clarify the delimitation of subgenera and settle the relationships among sections within this genus. A fifty-locus dataset was firstly employed to construct a robust phylogeny of Tricholoma. Based on this, a new infrageneric arrangement for the genus Tricholoma, with four subgenera, of which two are in accordance with the previous subgenera Pardinicutis and Sericeicutis, and eleven sections, is suggested. Subgenus Pardinicutis, occupying the basal position, only harbors sect. Pardinicutis, while the subg. Sericeicutis comprises sects. Lasciva and Sericella located at the sub-basal position with good support. Subgenus Terrea is newly erected here and consists of sect. Terrea, sect. Atrosquamosa and two as yet unnamed phylogenetic lineages. Besides an unnamed section-level lineage, subg. Tricholoma consists of sects. Genuina, Muscaria, Rigida, Tricholoma, Fucata and Matsutake, of which the two latter are newly proposed. The previously defined subg. Contextocutis is clustered within subg. Tricholoma and is a synonym of the latter. Tricholoma colos- sus, T. acerbum and their allies, which used to be allocated in sect. Megatricholoma (or genus Megatricholoma), are relocated to sect. Genuina since they form a strongly supported monophyletic group and share rusty or black spots on lamellae with other species in this section. Taxonomic descriptions of the new infrageneric taxa and a key to subgenera and sections of the genus Tricholoma are presented.
关键词	ectomycorrhizal fungi new sections new subgenus systematics taxonomy SECT. GENUINA AGARICALES ECTOMYCORRHIZAL FUNGI MONOTROPOIDEAE ERICACEAE SPECIES DELIMITATION MOLECULAR PHYLOGENY GENETIC DIVERSITY MATSUTAKE SPECIFICITY SEQUENCES INFERENCE
DOI	10.3767/persoonia.2023.50.01
收录类别	SCI
WOS记录号	WOS:001053496600001
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/75375
专题	中国科学院昆明植物研究所
推荐引用方式 GB/T 7714	Ding,X. X.,Xu,X.,Kost,G.,et al. A fifty-locus phylogenetic analysis provides deep insights into the phylogeny of Tricholoma (Tricholomataceae, Agaricales)[J]. PERSOONIA,2023,50:1-26.
APA	Ding,X. X.,Xu,X.,Kost,G.,Cui,Y. Y.,Wang,P. M.,&Yang,Z. L..(2023).A fifty-locus phylogenetic analysis provides deep insights into the phylogeny of Tricholoma (Tricholomataceae, Agaricales).PERSOONIA,50,1-26.
MLA	Ding,X. X.,et al."A fifty-locus phylogenetic analysis provides deep insights into the phylogeny of Tricholoma (Tricholomataceae, Agaricales)".PERSOONIA 50(2023):1-26.

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