Induced resistance as a strategy for vineyard protection
Résumé
As most grown grapevine Vitis vinifera varieties are susceptible to diseases such as downy and powdery mildews, numerous treatments are required to ensure a satisfactory yield and harvest quality. However, the use of phytochemi cal fungicides has serious drawbacks : some of them are potentially harmful for the envir onment and human health and contribute to the selection of resistant pathogen st rains. Nowadays, in an object ive of sustainable viticulture, there are increasing societal request, political incitation and winegrower’s awareness to reduce the use of pesticides. For these reasons, alternative / complementary strategies of protection are under research. In our laborat ory, we are studying the activation of the grapevine defense reactions by compounds called elicitors. Regarding the elicitor-induced resistance of grapevine leaves against downy and powdery mildews, promising results have been obtained in greenhouse conditions but this strategy is still not controlled in the vi neyard conditions. We propose to present the state of the art concerning induced resistance in grapevine : from concept to vineyard application.
Origine : Fichiers produits par l'(les) auteur(s)
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