Effuseotrichosporon baotianmanense sp. nov., a novel yeast species isolated from rotting wood in China

Two novel yeast strains, designated NYNU 211158 and NYNU 211179, were recovered from decaying wood samples collected in the Baotianman Nature Reserve, Henan Province, central China. Molecular phylogenetic analyses based on the D1/D2 domain of the LSU rRNA gene and the internal transcribed spacer (ITS) regions indicated that the closest known relative of these strains is the described species Effuseotrichosporon vanderwaltii . Sequence comparisons revealed that the novel strains differ from the type strain of E. vanderwaltii by 15 nucleotide substitutions (2.2%) in the D1/D2 domain and five nucleotide substitutions (1.0%) in the ITS region. Physiologically, the novel strains can be distinguished from E. vanderwaltii by their capacity to assimilate lactose, raffinose, inulin, N -acetyl- d -glucosamine, glycerol, erythritol, ethanol, methanol, citrate, 2-keto- d -gluconate, 5-keto- d -gluconate and ethylamine. On the basis of these molecular and phenotypic divergences, the strains are proposed to represent a novel species, Effuseotrichosporon baotianmanense sp. nov., with the holotype designated as CICC 33543 T (MycoBank MB 864553).