Wine yeast genomes lack diversity

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Sequencing the genomes of hundreds of strains of the wine yeast S. cerevisiae has revealed little genetic diversity and high levels of inbreeding. In many cases, yeast strains sold by different companies were almost genetically identical. The results, published in the April issue of G3: Genes|Genomes|Genetics, a publication of the Genetics Society of America, suggest that winemakers attempting to develop improved wine yeasts will need to look to creating hybrids with more exotic strains.