Methyl salicylate, a grape and wine chemical marker and sensory contributor in wines elaborated from grapes affected or not by cryptogamic diseases

Methyl salicylate (MeSA) is a plant metabolite that induces defence resistance and an odorous volatile compound presenting green nuances. This was shown to be present in wine samples, sometimes at concentrations above its olfactory detection threshold. MeSA localized grapes, particularly the skins stems, extracted during red vinification. It detected highest wines of several grape varieties, made from grapes affected by cryptogamic diseases, namely downy mildew caused Plasmopara viticola, black rot Guignardia bidwellii. has also been vines Esca, Grapevine Trunk Disease. can considered chemical marker indicative level development vine diseases.