First record of Cantharellus minor from Vietnam with identification support from a combination of nrLSU and nrSSU phylogenetic analysis

Thuan Duc Lao, Nghia Trong K, Tai Van Ngo, Nguyen Binh Truong, Luyen Tien Vu, Thuy Ai Huyen Le


Background: A previously identified sample XC02, which was collected from a pine forest (Pinus kesiya Royle ex Gordon), in Xuan Tho Commune, Da Lat, Lam Dong Province, Vietnam, was identified as Cantharellus minor based on morphology and nrLSU phylogeny analysis. Sequence analysis of multiple genes are becoming more and more common for phylogenetic analysis of mushrooms.

Method: Total DNA was isolated from sample XC02. The primer NS1, NS4 were applied to amplify the target gene the nuclear ribosomal small subunit DNA (nrSSU). For phylogenetic analysis, individual and concatenated datasets (nrSSU and nrLSU-nrSSU) were constructed. Phylogenetic tree was constructed with MEGA 6.0 with a 1000 replicate bootstrap based on the neighbor joining, maximum likelihood, maximum parsimony method.  

Results: A concatenated dataset containing a total of 14 sequences from CantharellusCraterellus (CantharellaceaeCanthraellales) and Hydnum (HydnaceaeCantharellales) were constructed. For the specimen XC02, the phylogenies based on the first, second, and third datasets (nrLSUnrSSU, and nrLSU-nrSSU) and the morphological analysis, reported in our previous study, strongly confirmed the identity of XC02 as Cantharellus minor.

Conclusion: The combination between the morphological analysis and phylogenetic analysis is confirmed as the best approach for the identification of Cantharellus and other mushroom species that we collected in the Central Highlands, Vietnam.

Keywords: nrLSUCantharellus, Cantharellus minornrSSUnrLSU; phylogeny analysis; Vietnam

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