Scheffersomyces tanahashii sp. nov., isolated from the cocoon wall of the stag beetle Prosopocoilus astacoides blanchardi
Journal
International Journal of Systematic and Evolutionary Microbiology
Journal Volume
75
Journal Issue
3
ISSN
1466-5026
1466-5034
Date Issued
2025-03-14
Author(s)
DOI
10.1099/ijsem.0.006720
Abstract
A previous investigation of symbiotic yeasts associated with the stag beetle Prosopocoilus astacoides blanchardi isolated strains of the genus Scheffersomyces from the cocoon walls, larval midgut, larval hindgut and larval tunnels. Phylogenetic analysis of the D1/D2 domains of the LSU rRNA gene sequences revealed identical sequences, indicating that they belonged to the same species, but suggested that the species was new. In this study, sequence analysis and physiological characterization identified a representative strain of these beetle-associated yeasts as a novel species in the genus Scheffersomyces. The sequence similarities of the concatenated LSU domains and internal transcribed spacer regions indicated that strain BCRC 23563T forms a well-supported and distinct species in the xylose-fermenting Scheffersomyces subclade, with the sequences for each gene differing in nt substitutions from those of previously described related species by at least 1.06% and 2.7% respectively. The physiological characteristics of the novel species were also distinct from those of the closely related described species, though it could still process xylose as is expected of stag beetle-associated Scheffersomyces symbionts. Based on the data, a novel yeast species, Scheffersomyces tanahashii sp. nov., is proposed to accommodate this strain. The holotype is BCRC 23563T (ex-type strains NBRC 116731 and NCYC 4470). The MycoBank accession number is 857608.
SDGs
Publisher
Microbiology Society
Type
journal article