Root microbiota regulates tiller number in rice

IF 45.5 1区生物学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY

Cell Pub Date : 2025-04-22 DOI:10.1016/j.cell.2025.03.033

Jingying Zhang, Bing Wang, Haoran Xu, Weidong Liu, Jingwei Yu, Qiuxia Wang, Hong Yu, Jin-Wei Wei, Rui Dai, Jinghang Zhou, Yuhang He, Di Zou, Jinhua Yang, Xinwei Ban, Qingliang Hu, Xiangbing Meng, Yong-Xin Liu, Binglei Wang, Bin Hu, Mingyu Wang, Yang Bai

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Abstract

Rice tillering is an important agronomic trait regulated by plant genetic and environmental factors. However, the role and mechanism of the root microbiota in modulating rice tillering have not been explored. Here, we examined the root microbiota composition and tiller numbers of 182 genome-sequenced rice varieties grown under field conditions and uncovered a significant correlation between root microbiota composition and rice tiller number. Using cultivated bacterial isolates, we demonstrated that various members of the root microbiota can regulate rice tillering in both laboratory and field conditions. Genetic, biochemical, and structural analyses revealed that cyclo(Leu-Pro), produced by the tiller-inhibiting bacterium Exiguobacterium R2567, activates the rice strigolactone (SL) signaling pathway by binding to the SL receptor OsD14, thus regulating tillering. The present work provides insight into how the root microbiota regulates key agronomic traits and offers a promising strategy for optimizing crop growth by harnessing the root microbiota in sustainable agriculture.

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根系微生物群调控水稻分蘖数

水稻分蘖是一项重要的农艺性状，受植物遗传和环境因素的共同调控。然而，根系微生物群在水稻分蘖调控中的作用和机制尚未深入研究。通过对182个大田条件下的水稻品种进行根系微生物群组成和分蘖数的分析，发现根系微生物群组成与水稻分蘖数之间存在显著的相关性。利用培养的细菌分离物，我们证明了根系微生物群的不同成员可以在实验室和田间条件下调节水稻分蘖。遗传、生化和结构分析表明，分蘖抑制菌Exiguobacterium R2567产生的cyclo（Leu-Pro）通过与水稻独角胞内酯（SL）受体OsD14结合，激活水稻独角胞内酯信号通路，从而调控水稻分蘖。目前的工作提供了对根系微生物群如何调节关键农艺性状的深入了解，并为通过利用可持续农业中的根系微生物群来优化作物生长提供了一个有希望的策略。

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来源期刊

Cell 生物-生化与分子生物学

CiteScore

110.00

自引率

0.80%

发文量

396

审稿时长

2 months

期刊介绍： Cells is an international, peer-reviewed, open access journal that focuses on cell biology, molecular biology, and biophysics. It is affiliated with several societies, including the Spanish Society for Biochemistry and Molecular Biology (SEBBM), Nordic Autophagy Society (NAS), Spanish Society of Hematology and Hemotherapy (SEHH), and Society for Regenerative Medicine (Russian Federation) (RPO). The journal publishes research findings of significant importance in various areas of experimental biology, such as cell biology, molecular biology, neuroscience, immunology, virology, microbiology, cancer, human genetics, systems biology, signaling, and disease mechanisms and therapeutics. The primary criterion for considering papers is whether the results contribute to significant conceptual advances or raise thought-provoking questions and hypotheses related to interesting and important biological inquiries. In addition to primary research articles presented in four formats, Cells also features review and opinion articles in its "leading edge" section, discussing recent research advancements and topics of interest to its wide readership.