New Cytoplasmic Virus-Like Elements (VLEs) in the Yeast Debaryomyces hansenii.

ABSTRACT: Yeasts can have additional genetic information in the form of cytoplasmic linear dsDNA molecules called virus-like elements (VLEs). Some of them encode killer toxins. The aim of this work was to investigate the prevalence of such elements in D. hansenii killer yeast deposited in culture collections as well as in strains freshly isolated from blue cheeses. Possible benefits to the host from harboring such VLEs were analyzed. VLEs occurred frequently among fresh D. hansenii isolates (15/60 strains), as opposed to strains obtained from culture collections (0/75 strains). Eight new different systems were identified: four composed of two elements and four of three elements. Full sequences of three new VLE systems obtained by NGS revealed extremely high conservation among the large

SUBMITTER: Polomska X 

PROVIDER: S-EPMC8472843 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature