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Torulaspora lindneri sp. nov., a novel ascomycetous yeast species isolated from China and Thailand

Summary

Scientists discovered and formally described a new yeast species called Torulaspora lindneri, found in chestnut tree bark in China and soil in Thailand. This yeast belongs to a group known for various applications in fermentation and biotechnology. The species was identified through genetic sequencing and microscopic examination, showing it forms spherical spores with distinctive tapered structures. The findings contribute to our understanding of yeast diversity in natural forest environments.

Background

The genus Torulaspora contains ten known yeast species distributed across various habitats worldwide. During investigations of yeast diversity in forest environments, two strains with identical molecular sequences were discovered from chestnut tree bark in China and soil in Thailand, representing a potential new species.

Objective

To characterize and formally describe a novel ascomycetous yeast species belonging to the genus Torulaspora based on phylogenetic and phenotypic analysis of two geographically isolated strains.

Results

Strains CGMCC 2.7783 and KKU-PM21 possessed identical D1/D2 and ITS sequences and clustered with Torulaspora jiuxiensis but differed by 7 (1.26%) and 43 (5.75%) mismatches respectively, indicating a distinct species. The new species forms one to two spherical ascospores in persistent asci with tapered protuberances and exhibits specific biochemical characteristics distinguishing it from related species.

Conclusion

A novel ascomycetous yeast species, Torulaspora lindneri sp. nov., is formally described based on molecular and phenotypic evidence. The species appears associated with plant environments in tropical and subtropical zones, suggesting close ecological relationships with plants that warrant further investigation.
  • Published in:International Journal of Systematic and Evolutionary Microbiology,
  • Study Type:Taxonomic Description Study,
  • Source: 10.1099/ijsem.0.006789, PMID: 40378063
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