Comitini F and Ciani M (2006) Survival of inoculated Saccharomyces cerevisiae strain on wine grapes during two vintages. Lett Appl Microbiol 42(3):248-53
Abstract: AIMS: To investigate the influence of a specific ecological niche, the wine grape, on the survival and development of Saccharomyces cerevisiae. METHODS AND RESULTS: A strain with a rare phenotype was sprayed onto the grape surfaces and monitored through two vintages using a specific indicative medium and analysing the internal transcribed spacer regions in the 5.8S rDNA. During the ripening process, there was a progressive colonization of the surface of the undamaged and damaged grapes by epiphytic yeasts, up to the time of harvest. The damaged wine grapes showed a much greater epiphytic yeast population. However, the inoculated S. cerevisiae strain showed a scarce persistence on both undamaged and damaged wine grapes, and the damaged grapes did not appear to improve the grape surface colonization of this strain. CONCLUSIONS: Results indicated that wine grape is not a favourable ecological niche for the development and colonization of S. cerevisiae species. SIGNIFICANCE AND IMPACT OF THE STUDY: Results of this work are further evidence that S. cerevisiae is not specifically associated with natural environments such as damaged and undamaged wine grapes.
|Status: Published||Type: Journal Article||PubMed ID: 16478512|
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