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against twocommonpathogens: Fusarium culmorum and Cochliobolus sativus. Amongthe various VOCs,
methyl propanoate (MP) and methyl prop-2-enoate (MA) exhibited remarkable antifungal e ects
under di erent experimental conditions (direct or indirect contact) and at di erent concentrations
(500–1000 M). In addition, the type of antifungal e ect (fungistatic or fungicidal) appeared to be
strongly correlated with the VOC concentrations. Additional tests revealed that both molecules
increased membrane permeability of pathogenic spores, which resulted in a decreased e ux of K+
ions into the intracellular medium.
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