论文--中国科学院遗传与发育生物学研究所

Root Microbiota Regulates Tiller Number in Rice.

作者：	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, Peiyong Xin, Jinfang Chu, Changsheng Li, Ruben Garrido-Oter, Peng Yu, Aalt Dirk Jan van Dijk, Lemeng Dong, Harro Bouwmeester, Song Gao, Ancheng Huang, Chengcai Chu, Jiayang Li, Yang Bai*.
刊物名称：	Cell
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发布时间：	2025-04-28
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摘要：	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 has 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 bacteriumExiguobacteriumR2567, 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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