The inheritance of mitochondrial DNA in interspecific Saccharomyces hybrids and their properties in winemaking

This study shows that mitotype restoration follows fixed schemata. We created isogenic, interspecific Saccharomyces cerevisiae x Saccharomyces uvarum hybrids through direct mating and analysed their mating frequency and mitotype. The mating frequency increased for most crosses in staggered mating. Mitotyping revealed that breeding lines with the same parental strain of S. cerevisiae and different parental strains of S. uvarum give rise to the same mitotype. According to our results, we postulate that the inheritance of mtDNA is dominated by one parental strain and that the superior mitotype is specific to each breeding line. Technological tests showed typical hybrid heterosis.
Source: Yeast - Category: Molecular Biology Authors: Tags: SPECIAL ISSUE ‐ YEAST INTERSPECIES HYBRIDS Source Type: research