Isabelle Soustre-Gacougnolle

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Recently, thiamine (VitaminB1) has been shown to induce resistance against Pseudomonas syringae in Arabidopsis plants through priming of defense responses. In this paper, we have demonstrated the efficiency of thiamine to induce resistance against downy mildew caused by the oomycete Plasmopara viticola in a susceptible Vitis vinifera cultivar "Chardonnay"(More)
Previously, we have reported the ability of thiamine (vitamin B1) to induce resistance against Plasmopara viticola in a susceptible grapevine cv. Chardonnay. However, mechanisms underlying vitamins, especially, thiamine-induced disease resistance in grapevine are still largely unknown. Here, we assessed whether thiamine could modulate phenylpropanoid(More)
Methionine (Met) is a nutritionally essential sulfur-containing amino acid (SAA) known for its preponderant role as initiator in protein synthesis. However, other functions for Met in plants are not well described. The implication of this SAA in oxidative stress tolerance has been recently reported, however the mode of action of Met is still poorly(More)
Grapevine (Vitis vinifera) is susceptible to a variety of pathogenic fungi that affect yield and wine quality. Their control is generally achieved by widespread application of fungicides in the vineyards. The economic costs and negative environmental impact associated with these applications has led to a quest for alternative strategies, focusing on(More)
RNA silencing is a natural defence mechanism against viruses in plants, and transgenes expressing viral RNA-derived sequences were previously shown to confer silencing-based enhanced resistance against the cognate virus in several species. However, RNA silencing was shown to dysfunction at low temperatures in several species, questioning the relevance of(More)
Wine growing has a high economic value globally, and vineyards, with their centenarian grape varieties, are an integral part of our societies. Yet with the use of spraying to control pathogens and weeds, mainstream viticulture has become a big pesticide consumer. Criticism of this conventional type of viticulture and its environmental/health impacts is(More)
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