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Abstract

Plants roots and the thin soil area surrounding them, the rhizosphere, are a hotspot of microbial activity. This is mostly due to the release of photosynthates that represent a substantial carbon source for the root-associated microbial communities, the microbiome. It is intriguing how pants can maintain a harmonious interaction with beneficial microbes while restricting pathogens.

We have previously shown that coumarins, selected compounds released by plant roots under conditions of nutrient stress but also following the activation of the ISR signaling pathway, can shape the root microbiome and favor ISR-inducing microbes. Our current goal is to characterize the role of these structural and chemical defense components on the assembly and function of root-associated microbiota.

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Ionnis Stringlis, post-doctorant à l'université d'Utrecht - Pays-Bas, exploreé comment les racines perçoivent les éliciteurs et les rhizobactéries bénéfiques et le rôle de l'exsudation racinaire sur l'assemblage du microbiome racinaire. Durant son postdoc, il étudie plus particulièrement le rôle des défenses racinaires et les changements métabolomiques pendant la colonisation afin de comprendre comment les plantes peuvent façonner leur microbiome par exsudation de métabolites secondaires.

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