Ecological interactions among Saccharomyces cerevisiae strains: insight into the dominance phenomenon.

ABSTRACT: This study investigates the behaviour of Saccharomyces cerevisiae strains, in order to obtain insight into the intraspecies competition taking place in mixed populations of this species. Two strains of S. cerevisiae, one dominant and one non-dominant, were labelled and mixed, and individual fermentations were set up to study the transcriptomes of the strains by means of RNA-seq. The results obtained suggest that cell-to-cell contact and aggregation, which are driven by the expression of genes that are associated with the cell surface, are indispensable conditions for the achievement of dominance. Observations on mixed aggregates, made up of cells of both strains, which were detected by means of flow cytometry, have confirmed the transcriptomic data. Furthermore, overexpression of the SSU1

SUBMITTER: Perez-Torrado R 

PROVIDER: S-EPMC5339867 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature