4.4 Article

Suhomyces drosophilae sp. nov., isolated from Drosophila flies feeding on a stinkhorn mushroom

Publisher

MICROBIOLOGY SOC
DOI: 10.1099/ijsem.0.004358

Keywords

Suhomyces; saccharomycetes yeast; Drosophilagut; new yeast species; India

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Funding

  1. Agharkar Research Institute's intramural research grant [MYC-02]

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The majority of Suhomyces species have been isolated from fungus-feeding insects and particularly from the gut of beetles. In the present study, seven yeast strains were isolated from the gut of Drosophila species feeding on glebe, the spore-bearing inner mass, of a stinkhorn mushroom belonging to the family Phallaceae. Based on phenotypic, biochemical characterization and sequence analysis of the D1 /132 region of the large subunit rRNA gene and the internal transcribed spacer (ITS) region, two of these yeast strains, DGY3 and DGY4, represented a novel species of the genus Suhomyces. The novel species is closely related to an undescribed species of Candida ST-370 (DQ404513) and with Suhomyces canberraensis, wherein, the novel species differs from S. canberraensis by 40 nucleotide substitutions and three gaps (7.7% sequence variation) in the 01/132 region and 50 nucleotide substitutions and seven gaps (13.7% sequence variation) in the ITS region. Several morphological and physiological differences were also observed between S. canberraensis and the strains obtained during this study. These data support the proposal of Suhomyces drosophilae as a novel species, with DGY3(T) as the holotype and CBS 16329T and MCC 1871(T) as ex-type strains.

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