Phytoalexines et reacute;actions de deacute;fense de la tomate aux infections parPhytophthora parasiticaetVerticillium albo-atrum

摘要

Two cultivars of tomato of Saint-Pierre pheacute;notype, isogenic for the resistance against verticilliosis and different for the resistance against mildew (and againstPhytophthora parasiticaDast.), were inoculated withP.parasiticaand withVerticillium albo-atrumReinke et Berth. Associated with the defence reactions, an accumulation of sesquiterpenes phenolic compounds, tomatin, and oxygenated compounds of methyl linoleate took place in the tissues. Synthesis of these compounds in the host varies with the cultivars and the parasites in presence.In vitrostudies on the inhibition ofP.parasiticahave shown an important synergism between the dienols on one side and the phenolic compounds and tomatin on the other side. Translated by the Journal