Vitis vinifera and intraspecific diversity of yeast associated at different geographic areas

TL;DRAbstract

Genetic diversity of Saccharomyces cerevisiae associated to Vitis vinifera in spontaneous fermentation was studied by analysis of mitochondrial DNA restriction. Colonies were isolated at different stages of fermentation with Albarino must from three different geographic areas, Val do Salnes, O Rosal and O Condado de Tea from Galicia. A total of Seventeen different patterns out of 273 S. cerevisiae strains were identified using mitochondrial DNA restriction analysis. Pattern I from O Rosal, VI from Val do Salnes and XII from O Condado de Tea were the predominant patterns. Only one pattern (II) was common to all fermentations. The cluster analysis (UPGMA), based on polymorphic mtDNA revealed any relationship among the geographic origin. This molecular study provides useful information about distribution and genetic relationships among several S. cerevisiae strains associated to Vitis vinifera Albarino from differents geographic origin and the influence on the certain oenological properti

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