Abstract

Two strains of genus Kodamaea, representing a novel anamorphic yeast species, were isolated from two samples of Marasmiellus sp. collected in Thailand. Analysis of the sequences of the internal transcribed spacer (ITS) regions and the D1/D2 domains of the large subunit (LSU) rRNA gene showed that the two strains differed by 27-42 nucleotide substitutions in the D1/D2 domains of the LSU rRNA gene and 7-34 nucleotide substitutions in the ITS region of a group of related species, Kodamaea smagusa CBS 11430T, Kodamaea fungicola JCM 10142T, Kodamaea plutei ATCC MYA-4329T, Kodamaea lidongshanica SD5S01T and Kodamaea jinghongensis NYNU 167162T. Phylogenetic analysis based on the concatenated sequences of the ITS and the D1/D2 domains of the LSU rRNA gene showed that the two strains were placed in the Kodamaea clade and clearly separated from other recognized species of the genus. Therefore, the two strains were assigned as a novel species of the genus Kodamaea, for which we propose the name Kodamaea samutsakhonensis f.a., sp. nov. The holotype is TBRC 16043T (=DMKU-BP19T) and the isotype is PYCC 9354. The MycoBank number of the novel species is MB 846490.

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