Hanseniaspora menglaensis f.a., sp. nov., a novel apiculate yeast species isolated from rotting wood

Two apiculate strains (NYNU 181072 and NYNU 181083) of a bipolar budding yeast species were isolated from rotting wood samples collected in Xishuangbanna Tropical Rainforest in Yunnan Province, southwest PR China. On the basis of phenotypic characteristics and the results of phylogenetic analysis of the D1/D2 domain of the large subunit (LSU) rRNA, internal transcribed spacer (ITS) region and the actin (ACT1) gene, the two strains were found to represent a single novel species of the genus Hanseniaspora, for which the name Hanseniaspora menglaensis f.a., sp. nov. (holotype CICC 33364T; MycoBank MB 847437) is proposed. In the phylogenetic tree, H. menglaensis sp. nov. showed a close relationship with Hanseniaspora lindneri, Hanseniaspora mollemarum, Hanseniaspora smithiae and Hanseniaspora valbyensis. H. menglaensis sp. nov. differed from H. lindneri, the most closely related known species, by 1.2 % substitutions in the D1/D2 domain, 2.5 % substitutions in the ITS region and 5.4 % substitutions in the ACT1 gene, respectively. Physiologically, H. menglaensis sp. nov. can also be distinguished from H. lindneri by its ability to assimilate o-gluconate.

Automated summary

Two strains of bipolar budding yeast were isolated from rotting wood samples in Xishuangbanna Tropical Rainforest in Yunnan Province, China. Through phenotypic characteristics and phylogenetic analysis, the strains were identified as a new species of the genus Hanseniaspora, named Hanseniaspora menglaensis f.a., sp. nov. This species differs from the closely related Hanseniaspora lindneri by genetic substitutions and physiological traits.