Spencermartinsiella henanensis fa., sp. nov., a novel yeast species isolated from rotting wood

Abstract

Two yeast strains (NYNU 211162 and NYNU 211275) were isolated from rotting wood collected in the Baotianman Nature Reserve, Henan Province, central China. Phylogenetic analysis of the D1/D2 domain of the large subunit (LSU) rRNA gene and the internal transcribed spacer (ITS) region revealed that the strains represent a phylogenetically distinct species within the genus Spencermartinsiella. The name Spencermartinsiella henanensis fa., sp. nov. is proposed for this species with holotype CICC 33543T (Mycobank MB 851142). S. henanensis sp. nov. differed by only 3 nt (~0.5 %) substitutions from the closest known species S. europaea NCAIM Y.01817T in the D1/D2 domain, but by 33 nt (~6 %) substitutions, 34 nt (~3.8 %) substitutions, 30 nt (~5.6 %) substitutions and 75 nt (~9.9 %) substitutions in the ITS region and the partial TEF1, COXII and RPB2 genes. Additionally, S. henanensis sp. nov. can be physiologically distinguished from S. europaea by its ability to assimilate inulin, inability to assimilate ethylamine and cadaverine, and incapability of growth at 30 °C.