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Plant microbiota controls an alternative root branching regulatory mechanism in plants.

ABSTRACT: The establishment of beneficial interactions with microbes has helped plants to modulate root branching plasticity in response to environmental cues. However, how the plant microbiota harmonizes with plant roots to control their branching is unknown. Here, we show that the plant microbiota influences root branching in the model plant Arabidopsis thaliana. We define that the microbiota's ability to control some stages in root branching can be independent of the phytohormone auxin that directs lateral root development under axenic conditions. In addition, we revealed a microbiota-driven mechanism controlling lateral root development that requires the induction of ethylene response pathways. We show that the microbial effects on root branching can be relevant for plant responses to environmental stresses. Thus, we discovered a microbiota-driven regulatory pathway controlling root branching plasticity that could contribute to plant adaptation to different ecosystems.

SUBMITTER: Gonin M

PROVIDER: S-EPMC10104509 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature

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Plant microbiota controls an alternative root branching regulatory mechanism in plants.

Gonin Mathieu M Salas-González Isai I Gopaulchan David D Frene Juan P JP Roden Stijn S Van de Poel Bram B Salt David E DE Castrillo Gabriel G

Proceedings of the National Academy of Sciences of the United States of America 20230403 15

The establishment of beneficial interactions with microbes has helped plants to modulate root branching plasticity in response to environmental cues. However, how the plant microbiota harmonizes with plant roots to control their branching is unknown. Here, we show that the plant microbiota influences root branching in the model plant <i>Arabidopsis thaliana</i>. We define that the microbiota's ability to control some stages in root branching can be independent of the phytohormone auxin that dire ...[more]

PMID: 37011213

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Dataset Information

Plant microbiota controls an alternative root branching regulatory mechanism in plants.

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Plant microbiota controls an alternative root branching regulatory mechanism in plants.

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