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Open AccessArticle

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

1
Integrated and Urban Plant Pathology Laboratory, Gembloux Agro-Bio Tech (GxABT), University of Liège, 5030 Gembloux, Belgium
2
Laboratory of Chemistry of Natural Molecules, Gembloux Agro-Bio Tech (GxABT), University of Liège, 5030 Gembloux, Belgium
3
Department of Agronomy and Plant Biotechnology, National Agronomic Institute of Tunisia, University of Carthage, Tunis 1082, Tunisia
4
RL/Biogressors and Integrated Protection in Agriculture, National Agronomic Institute of Tunisia, University of Carthage, Tunis 1082, Tunisia
*
Author to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2019, 16(16), 2866; https://doi.org/10.3390/ijerph16162866
Received: 13 May 2019 / Revised: 17 June 2019 / Accepted: 8 August 2019 / Published: 10 August 2019
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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. View Full-Text
Keywords: methyl prop-2-enoate; methyl propanoate; biocontrol; volatile organic compound; mode of action methyl prop-2-enoate; methyl propanoate; biocontrol; volatile organic compound; mode of action
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Kaddes, A.; Fauconnier, M.-L.; Sassi, K.; Nasraoui, B.; Jijakli, M.H. Antifungal Properties of Two Volatile Organic Compounds on Barley Pathogens and Introduction to Their Mechanism of Action. Int. J. Environ. Res. Public Health 2019, 16, 2866.

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