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    Synthetic Rhamnolipid Bolaforms trigger an innate immune response in Arabidopsis thaliana

    Year: 2018

    Journal: Sci Rep, Volume 8, JUN 4

    Authors: Luzuriaga-Loaiza, W. Patricio; Schellenberger, Romain; De Gaetano, Yannick; Akong, Firmin Obounou; Villaume, Sandra; Crouzet, Jerome; Haudrechy, Arnaud; Baillieul, Fabienne; Clement, Christophe; Lins, Laurence; Allais, Florent; Ongena, Marc; Bouquillon, Sandrine; Deleu, Magali; Dorey, Stephan

    Organizations: EliDeRham project from the French region Grand Est; Rhamnoprot project from the French region Grand Est; CNRS (Centre National de la Recherche Scientifique); MESRI (Ministere de l'Enseignement Superieur, de la Recherche et de l'Innovation); Federative Research Structure SFR Condorcet; Action de Recherche Concertee project FIELD at University of Liege

    Stimulation of plant innate immunity by natural and synthetic elicitors is a promising alternative to conventional pesticides for a more sustainable agriculture. Sugar-based bolaamphiphiles are known for their biocompatibility, biodegradability and low toxicity. In this work, we show that Synthetic Rhamnolipid Bolaforms (SRBs) that have been synthesized by green chemistry trigger Arabidopsis innate immunity. Using structure-function analysis, we demonstrate that SRBs, depending on the acyl chain length, differentially activate early and late immunity-related plant defense responses and provide local increase in resistance to plant pathogenic bacteria. Our biophysical data suggest that SRBs can interact with plant biomimetic plasma membrane and open the possibility of a lipid driven process for plant-triggered immunity by SRBs.
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