MassIVE MSV000100171

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Root phenolics as potential drivers of preformed defenses and reduced disease susceptibility in a paradigm bread wheat mixture

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Description

Plant-plant interactions modulate foliar disease susceptibility in intraspecific mixtures. However, the molecular events including signals and responses underlying the reduction in disease susceptibility remain largely unexplored. Here, we developed an experimental system that can abolish root-mediated interactions between plants in a model of bread wheat varietal mixture. We then performed transcriptomic and metabolomic analyses to uncover the molecular responses linked to decreased susceptibility to Septoria tritici blotch in plant-plant interactions. Our analysis revealed that disrupting root chemical interactions impaired the reduction in susceptibility to Septoria and identified phenolic compounds as potential key mediators. The plant-plant interactions under study triggered significant molecular changes in specialized metabolism, biotic interactions, transporters, and responses to resources. Disrupting root interactions canceled both the macroscopic and molecular responses, thus providing a strong link between them. These insights provide a deeper understanding of the molecular basis of plant-plant interactions and the processes involved in reducing disease susceptibility in intraspecific mixtures. [doi:10.25345/C5DV1D23J] [dataset license: CC0 1.0 Universal (CC0 1.0)]

Keywords: Metabolomics ; Multi-omics ; Plant-plant interactions ; Root exudates ; Septoria tritici blotch ; Wheat ; DatasetType:Metabolomics

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Principal Investigators:
(in alphabetical order) 		Elsa BALLINI, Institut Agro, France
Submitting User: LauraMathieu
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