Article (Scientific journals)
Weapons against Themselves: Identification and Use of Quorum Sensing Volatile Molecules to Control Plant Pathogenic Fungi Growth
De Clerck, Caroline; Josselin, Laurie; Vangoethem, Valentine et al.
2022In Microorganisms, 10 (12), p. 2459
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Keywords :
Virology; Microbiology (medical); Microbiology
Abstract :
[en] Quorum sensing (QS) is often defined as a mechanism of microbial communication that can regulate microbial behaviors in accordance with population density. Much is known about QS mechanisms in bacteria, but fungal QS research is still in its infancy. In this study, the molecules constituting the volatolomes of the plant pathogenic fungi Fusarium culmorum and Cochliobolus sativus have been identified during culture conditions involving low and high spore concentrations, with the high concentration imitating overpopulation conditions (for QS stimulation). We determined that volatolomes emitted by these species in conditions of overpopulation have a negative impact on their mycelial growth, with some of the emitted molecules possibly acting as QSM. Candidate VOCs related to QS have then been identified by testing the effect of individual volatile organic compounds (VOCs) on mycelial growth of their emitting species. The antifungal effect observed for the volatolome of F. culmorum in the overpopulation condition could be attributed to ethyl acetate, 2-methylpropan-1-ol, 3-methylbutyl ethanoate, 3-methylbutan-1-ol, and pentan-1-ol, while it could be attributed to longifolene, 3-methylbutan-1-ol, 2-methylpropan-1-ol, and ethyl acetate for C. sativus in the overpopulation condition. This work could pave the way to a sustainable alternative to chemical fungicides.
Disciplines :
Agriculture & agronomy
Chemistry
Author, co-author :
De Clerck, Caroline  ;  Université de Liège - ULiège > TERRA Research Centre > Plant Sciences
Josselin, Laurie  ;  Université de Liège - ULiège > TERRA Research Centre
Vangoethem, Valentine
Lassois, Ludivine  ;  Université de Liège - ULiège > Département GxABT
Fauconnier, Marie-Laure  ;  Université de Liège - ULiège > TERRA Research Centre > Chimie des agro-biosystèmes
Jijakli, Haissam  ;  Université de Liège - ULiège > TERRA Research Centre > Gestion durable des bio-agresseurs
Language :
English
Title :
Weapons against Themselves: Identification and Use of Quorum Sensing Volatile Molecules to Control Plant Pathogenic Fungi Growth
Publication date :
13 December 2022
Journal title :
Microorganisms
eISSN :
2076-2607
Publisher :
MDPI AG
Volume :
10
Issue :
12
Pages :
2459
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Available on ORBi :
since 13 January 2023

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