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Volume 73, Issue 8

f.a., sp. nov., a new yeast species isolated from the gut of the wood-feeding termite sp. No Access

Abstract

The gut of xylophagous insects such as termites harbours various symbiotic micro-organisms, including many yeast species. In a taxonomic study of gut-associated yeasts, two strains (ATS2.16 and ATS2.18) were isolated from the gut of the wood-feeding termite sp. in Maharashtra, India. Morphological and physiological characteristics and sequence analyses of the ITS and D1/D2 region of the large subunit rRNA gene revealed that these two strains represent a novel asexual ascomycetous yeast species in the genus . The species differs from some of its close affiliates in the genus in its inability to utilize ethanol and succinate as the sole carbon source and growth in high sugar concentrations (up to 50 % glucose). In contrast to most members of , the formation of ascospores was not observed on various sporulation media. Moreover, whole-genome sequencing was used to further confirm the novelty of this species. When compared with other large-spored species, average nucleotide identity values of 79–80 % and digital DNA–DNA hybridization values of 16–17 % were obtained. The name f.a., sp. nov. is proposed to accommodate this novel yeast species, with ATS2.16 as the holotype and strains NFCCI 4949, MTCC 13085 and PYCC 9152 as isotypes. The MycoBank number is MB 844210.

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  • Accepted:
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Keyword(s): ascomycetous yeast , India , insect gut , large-spored , Metschnikowia and new yeast species
© 2023 The Authors
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2023-08-04
2024-05-08
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Metschnikowia ahupensis f.a., sp. nov., a new yeast species isolated from the gut of the wood-feeding termite Nasutitermes sp.
Int J Syst Evol Microbiol 73, 006012 (2023); https://doi.org/10.1099/ijsem.0.006012
/content/journal/ijsem/10.1099/ijsem.0.006012
/content/journal/ijsem/10.1099/ijsem.0.006012
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