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F. Comitini, M. Ciani, Survival of inoculated Saccharomyces cerevisiae strain on wine grapes during two vintages, Letters in Applied Microbiology, Volume 42, Issue 3, 1 March 2006, Pages 248–253, https://doi.org/10.1111/j.1472-765X.2005.01837.x
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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.