Hannaella dianchiensis sp nov., a basidiomycetous yeast species isolated from lake water

Three strains (YIM-HL1107(T), YIM-HL1045, YIM-HL1112) representing a novel yeast species were isolated from surface water samples collected from the Caohai region of Dianchi Lake in Yunnan, south-western China. On the basis of morphological, physiological and biochemical characteristics and sequence analysis of the D1/D2 region of the LSU rRNA gene and the internal transcribed spacer (ITS) region, they were assigned to a novel species of the genus Hannaella. The closest relative to the novel species was Hannaella pagnoccae, but it showed 6.3% nucleotide differences (34 nt substitutions out of 541 nt) in the D1/D2 region of the LSU rRNA gene and 9.3-9.6% nucleotide differences (40-41 substitutions and 7-8 gaps out of 430 nt) in the ITS region. The name Hannaella dianchiensis sp. nov. is proposed. The type strain is YIM-HL1107(T) (= CBS 14191(T) = CCTCC AY 2015009(T)), and the MycoBank number is MB 816297.