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Study of gene expression: a tool to understand the behaviour of Oenococcus oeni in wine

Cristina Reguant, Departament de Bioquímica i Biotecnologia, Universitat Rovira i Virgili, Spain

The correct performance of wine malolactic fermentation (MLF) depends on the metabolic characteristics of the Oenococcus oeni strain/s responsible for this process. The criteria for strain selection include mainly the search for an efficient malolactic activity and a low production of undesirable compounds, such as acetic acid.

The main objective of this work was to evaluate the usefulness of the analysis of gene expression for a better understanding of the O. oeni strains performance under wine conditions. The study included the evaluation of different O. oeni strains by means of measuring the evolution of metabolites that may have an impact on organoleptic qualities, the related enzymatic activities and their gene expression, and the transcriptional response of several stress responsive genes.

The paper reproduced in this video-seminar was presented at the 2013 International SIVE Awards “Research for Development” (8th edition of Enoforum; 7-9 maggio 2013, Arezzo, Italy)



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Published on 11/25/2014
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