Summary
Treatment of haploid strains of the petite negative yeast Schizosaccharomyces pomhe with ethidium bromide prior to mating with untreated cells reduces transmission of mitochondrial markers from the treated strains. This effect is fully reversible after 20 generations of growth in drug free medium before mating. In contrast to the petite positive yeast Saccharomyces cerevisiae, where nuclear DNA synthesis is not affected but mitochondrial DNA is degraded in the presence of 20 μg/ml ethidium bromide, the same concentration decreases both nuclear and mitochondrial DNA synthesis in Schizosaccharomyces pomhe. After removal of the drug, nuclear DNA synthesis increases faster than its mitochondrial counterpart in Schizosaccharomyces pomhe.
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Wolf, K., Del Giudice, L. Effect of ethidium bromide on transmission of mitochondrial genomes and DNA synthesis in the petite negative yeast Schizosaccharomyces pomhe . Curr Genet 1, 193–197 (1980). https://doi.org/10.1007/BF00390943
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DOI: https://doi.org/10.1007/BF00390943