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Article

Synthetic Mono-Rhamnolipids Display Direct Antifungal Effects and Trigger an Innate Immune Response in Tomato against Botrytis Cinerea

1
RIBP-EA 4707, SFR Condorcet FR CNRS 3417, University of Reims Champagne-Ardenne, 51100 Reims, France
2
UnilaSalle, Unité Transformations & Agroressources, Université d’Artois, ULR7519, F-62408 Béthune, France
3
Earth and Life Institute, Applied Microbiology, Mycology, Université catholique de Louvain, Croix du Sud, 2 box L7.05.06, 1348 Louvain-la-Neuve, Belgium
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editors: Farid Chemat, Elena Ibáñez and Sylvain Antoniotti
Molecules 2020, 25(14), 3108; https://doi.org/10.3390/molecules25143108
Received: 27 May 2020 / Revised: 29 June 2020 / Accepted: 3 July 2020 / Published: 8 July 2020
(This article belongs to the Special Issue Plant Based Chemistry – towards “Green Chemistry 2.0”)
Natural rhamnolipids are potential biocontrol agents for plant protection against bacterial and fungal diseases. In this work, we synthetized new synthetic mono-rhamnolipids (smRLs) consisting in a rhamnose connected to a simple acyl chain and differing by the nature of the link and the length of the lipid tail. We then investigated the effects of these ether, ester, carbamate or succinate smRL derivatives on Botrytis cinerea development, symptoms spreading on tomato leaves and immune responses in tomato plants. Our results demonstrate that synthetic smRLs are able to trigger early and late immunity-related plant defense responses in tomato and increase plant resistance against B. cinerea in controlled conditions. Structure-function analysis showed that chain length of the lipidic part and type of acyl chain were critical to smRLs immune activity and to the extent of symptoms caused by the fungus on tomato leaves. View Full-Text
Keywords: innate immunity; tomato; elicitors; Botrytis; induced resistance innate immunity; tomato; elicitors; Botrytis; induced resistance
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MDPI and ACS Style

Robineau, M.; Le Guenic, S.; Sanchez, L.; Chaveriat, L.; Lequart, V.; Joly, N.; Calonne, M.; Jacquard, C.; Declerck, S.; Martin, P.; Dorey, S.; Ait Barka, E. Synthetic Mono-Rhamnolipids Display Direct Antifungal Effects and Trigger an Innate Immune Response in Tomato against Botrytis Cinerea. Molecules 2020, 25, 3108. https://doi.org/10.3390/molecules25143108

AMA Style

Robineau M, Le Guenic S, Sanchez L, Chaveriat L, Lequart V, Joly N, Calonne M, Jacquard C, Declerck S, Martin P, Dorey S, Ait Barka E. Synthetic Mono-Rhamnolipids Display Direct Antifungal Effects and Trigger an Innate Immune Response in Tomato against Botrytis Cinerea. Molecules. 2020; 25(14):3108. https://doi.org/10.3390/molecules25143108

Chicago/Turabian Style

Robineau, Mathilde, Sarah Le Guenic, Lisa Sanchez, Ludovic Chaveriat, Vincent Lequart, Nicolas Joly, Maryline Calonne, Cédric Jacquard, Stéphane Declerck, Patrick Martin, Stephan Dorey, and Essaid Ait Barka. 2020. "Synthetic Mono-Rhamnolipids Display Direct Antifungal Effects and Trigger an Innate Immune Response in Tomato against Botrytis Cinerea" Molecules 25, no. 14: 3108. https://doi.org/10.3390/molecules25143108

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