Duchateau, Simon; Crouzet, Jérome; Cordelier, Sylvain; Dhondt-Cordelier, Sandrine; Borrego, Celia; Mazeyrat-Gourbeyre, Florence; Gauthier, Charles 
ORCID: https://orcid.org/0000-0002-2475-2050; Baillieul, Fabienne; Villaume, Sandra; Cloutier, Maude; Déziel, Éric ORCID: https://orcid.org/0000-0002-4609-0115; Aziz, Aziz et Dorey, Stéphan
(2024).
Role of rhamnolipid analogues and their lipid precursors in Arabidopsis thaliana-induced resistance triggered by beneficial bacteria
In: 14th Congress on International-Society-for-Molecular-Plant-Microbe-Interactions (IS-MPMI), July 16-20, 2023, Providence, Rhode Island.
Résumé
Rhamnolipids are essential metabolites produced by bacteria of the genera Pseudomonas and Burkholderia. They are involved in bacterial surface
motility, biofilm development and colonization of bacterial hosts. Rhamnolipids are synthetized from 3-(3-hydroxyalkanoyloxy)alkanoic acid
(HAA) precursors. We previously demonstrated that HAAs and rhamnolipids are perceived by plants through two distinct mechanisms
(Schellenberger et al. 2021, PNAS doi: 10.1073/pnas.2101366118). In Arabidopsis, HAAs are sensed by the bulb-type lectin receptor kinase
LORE, inducing canonical immune signaling, whereas rhamnolipids trigger an atypical immune response, LORE-independent, and affected by
the sphingolipid composition of the plant plasma membrane. Rhamnolipids and HAAs are both able to trigger local resistance to bacterial
infection. Other bacteria belonging to Pantoea sp. produce rhamnolipid analogues known as ananatosides. Like rhamnolipids, these glycolipids
are synthetized from HAA precursors. The role of these bacterial metabolites in induced resistance to fungal and bacterial pathogens by a
beneficial strain of Pantoea ananatis was investigated in Arabidopsis thaliana and Brassica napus. Our data highlight an essential role of lipidderived invasion patterns in plant immunity triggered by beneficial microorganisms.
| Type de document: | Document issu d'une conférence ou d'un atelier |
|---|---|
| Informations complémentaires: | Molecular Plant-Microbe Interactions 37(5s):75 Affiche scientifique |
| Mots-clés libres: | - |
| Centre: | Centre INRS-Institut Armand Frappier |
| Date de dépôt: | 06 nov. 2024 05:11 |
| Dernière modification: | 06 nov. 2024 05:11 |
| URI: | https://espace.inrs.ca/id/eprint/16110 |
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