Transmission and recombination of mitochondrial genes in Saccharomyces cerevisiae after protoplast fusion

Anna Maráz, Július Šubík

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Protoplasts of auxotrophic strains of Saccharomyces cerevisiae of opposite and identical mating types carrying different mitochondrial drug-resistance markers, with both homosexual and heterosexual mitochondrial backgrounds, were induced to fuse by polyethylene glycol. After selective regeneration of prototrophic fusion products, the transmission and recombination frequencies of mitochondrial genes in populations of cells were determined and compared with those obtained in mating processes. The frequencies obtained in the fusion experiments proved very similar to those found in the zygote clones. The behavior of mitochondrial genes was apparently affected neither by nuclear mating type background nor by the method of transfer of mitochondrial genomes (i.e., protoplast fusion or mating), making possible mitochondrial genetic studies by protoplast fusion irrespective of the mating type barrier of yeast strains.

Original languageEnglish
Pages (from-to)131-133
Number of pages3
JournalMGG Molecular & General Genetics
Issue number1
Publication statusPublished - Jan 1981


ASJC Scopus subject areas

  • Genetics

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