1 UMR 1083 Sciences for Enology, INRA-Montpellier SupAgro-University of Montpellier, 2 place Viala, 34060 cedex 2, Montpellier, France. Electronic address: peggy.rigou@inrae.fr.
2 Lallemand, SAS, 19 rue des Briquetiers, BP 59, 31 702 Blagnac, France.
3 UMR 1083 Sciences for Enology, INRA-Montpellier SupAgro-University of Montpellier, 2 place Viala, 34060 cedex 2, Montpellier, France.