title: [Genetic analysis of the mitochondrial rho-mutability in Saccharomyces. II. Disomy for chromosome IV and spontaneous rho-mutability].
abstract: The disomy for chromosome IV in the strains studied led to: reduction in the red pigmentation of ade1 mutant colonies; a decrease in spontaneous rho- mutant frequency, and impairment of sporulation in hybrids descended from disomic parents. The nuclear srm1 mutation decreasing the spontaneous rho- mutability promoted the spontaneous extra chromosome loss in the disomics for chromosome IV. This result suggests a close connection between the spontaneous rho- mutability and mitotic chromosome stability.
mesh_terms: D004271:DNA, Fungal / Q000235:genetics*; D004272:DNA, Mitochondrial / Q000235:genetics*; D005800:Genes, Fungal; D005819:Genetic Markers; D009154:Mutation; D010641:Phenotype; D012441:Saccharomyces cerevisiae / Q000235:genetics* / Q000502:physiology; D013172:Spores, Fungal
chemical_list: D004271:DNA, Fungal; D004272:DNA, Mitochondrial; D005819:Genetic Markers
vernacular_title: Geneticheskiĭ analiz mitokhondrial'noĭ rho-mutabil'nosti u drozhzheĭ sakharomitsetov. Soobshchenie II. Disomiia po IV khromosome i spontannaia rho-mutabil'nost'.