1. Coordination between microbiota and root endodermis supports plant mineral nutrient homeostasis.
- Author
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Salas-González I, Reyt G, Flis P, Custódio V, Gopaulchan D, Bakhoum N, Dew TP, Suresh K, Franke RB, Dangl JL, Salt DE, and Castrillo G
- Subjects
- Arabidopsis genetics, Diffusion, Gene Expression Regulation, Plant, Homeostasis, Lipids biosynthesis, Plant Roots genetics, Stress, Physiological, Arabidopsis metabolism, Arabidopsis microbiology, Microbiota physiology, Minerals metabolism, Nutrients metabolism, Plant Roots metabolism, Plant Roots microbiology
- Abstract
Plant roots and animal guts have evolved specialized cell layers to control mineral nutrient homeostasis. These layers must tolerate the resident microbiota while keeping homeostatic integrity. Whether and how the root diffusion barriers in the endodermis, which are critical for the mineral nutrient balance of plants, coordinate with the microbiota is unknown. We demonstrate that genes controlling endodermal function in the model plant Arabidopsis thaliana contribute to the plant microbiome assembly. We characterized a regulatory mechanism of endodermal differentiation driven by the microbiota with profound effects on nutrient homeostasis. Furthermore, we demonstrate that this mechanism is linked to the microbiota's capacity to repress responses to the phytohormone abscisic acid in the root. Our findings establish the endodermis as a regulatory hub coordinating microbiota assembly and homeostatic mechanisms., (Copyright © 2021, American Association for the Advancement of Science.)
- Published
- 2021
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