Antifungal Properties of Two Volatile Organic Compounds on Barley Pathogens and Introduction to Their Mechanism of Action

Amine Kaddes, Marie-Laure Fauconnier, Khaled Sassi, Bouzid Nasraoui and M. Haïssam Jijakli
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Amine Kaddes: Integrated and Urban Plant Pathology Laboratory, Gembloux Agro-Bio Tech (GxABT), University of Liège, 5030 Gembloux, Belgium
Marie-Laure Fauconnier: Laboratory of Chemistry of Natural Molecules, Gembloux Agro-Bio Tech (GxABT), University of Liège, 5030 Gembloux, Belgium
Khaled Sassi: Department of Agronomy and Plant Biotechnology, National Agronomic Institute of Tunisia, University of Carthage, Tunis 1082, Tunisia
Bouzid Nasraoui: RL/Biogressors and Integrated Protection in Agriculture, National Agronomic Institute of Tunisia, University of Carthage, Tunis 1082, Tunisia
M. Haïssam Jijakli: Integrated and Urban Plant Pathology Laboratory, Gembloux Agro-Bio Tech (GxABT), University of Liège, 5030 Gembloux, Belgium

IJERPH, 2019, vol. 16, issue 16, 1-14

Abstract: This study evaluated the antifungal effects of various volatile organic compounds (VOCs) against two common pathogens: Fusarium culmorum and Cochliobolus sativus . Among the various VOCs, methyl propanoate (MP) and methyl prop-2-enoate (MA) exhibited remarkable antifungal effects under different experimental conditions (direct or indirect contact) and at different concentrations (500–1000 μM). In addition, the type of antifungal effect (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 efflux of K + ions into the intracellular medium.

Keywords: methyl prop-2-enoate; methyl propanoate; biocontrol; volatile organic compound; mode of action (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2019
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