Multiomics dissection of Brassica napus L. lateral roots and endophytes interactions under phosphorus starvation

Can Liu, Zhen Bai, Yu Luo, Yanfeng Zhang, Yongfeng Wang, Hexin Liu, Meng Luo, Xiaofang Huang, Anle Chen, Lige Ma, Chen Chen, Jinwei Yuan, Ying Xu, Yantao Zhu, Jianxin Mu, Ran An, Cuiling Yang, Hao Chen, Jiajie Chen, Zaifang Li, Xiaodan Li, Yachen Dong, Jianhua Zhao, Xingxing Shen, Lixi Jiang, Xianzhong Feng, Peng Yu (), Daojie Wang (), Xinping Chen () and Nannan Li ()
Additional contact information
Can Liu: Southwest University
Zhen Bai: Southwest University
Yu Luo: Southwest University
Yanfeng Zhang: Hybrid Rapeseed Research Center of Shaanxi Province
Yongfeng Wang: Henan University
Hexin Liu: Southwest University
Meng Luo: Shanghai Majorbio Research Institute
Xiaofang Huang: University of Bonn
Anle Chen: Southwest University
Lige Ma: Southwest University
Chen Chen: Southwest University
Jinwei Yuan: Southwest University
Ying Xu: Zhejiang University
Yantao Zhu: Hybrid Rapeseed Research Center of Shaanxi Province
Jianxin Mu: Hybrid Rapeseed Research Center of Shaanxi Province
Ran An: Hybrid Rapeseed Research Center of Shaanxi Province
Cuiling Yang: Henan University
Hao Chen: Henan University
Jiajie Chen: Zhejiang Lab
Zaifang Li: Zhejiang Lab
Xiaodan Li: Shanghai Majorbio Research Institute
Yachen Dong: Shanghai Majorbio Research Institute
Jianhua Zhao: Shanghai Majorbio Research Institute
Xingxing Shen: Zhejiang University
Lixi Jiang: Zhejiang University
Xianzhong Feng: Zhejiang Lab
Peng Yu: University of Bonn
Daojie Wang: Henan University
Xinping Chen: Southwest University
Nannan Li: Southwest University

Nature Communications, 2024, vol. 15, issue 1, 1-18

Abstract: Abstract Many plants associate with endophytic microbes that improve root phosphorus (P) uptake. Understanding the interactions between roots and endophytes can enable efforts to improve P utilization. Here, we characterize the interactions between lateral roots of endophytes in a core collection of 50 rapeseed (Brassica napus L.) genotypes with differing sensitivities to low P conditions. With the correlation analysis result between bacterial abundance and plant physiological indices of rapeseeds, and inoculation experiments on plates and soil, we identify one Flavobacterium strain (C2) that significantly alleviates the P deficiency phenotype of rapeseeds. The underlying mechanisms are explored by performing the weighted gene coexpression network analysis (WGCNA), and conducting genome-wide association studies (GWAS) using Flavobacterium abundance as a quantitative trait. Under P-limited conditions, C2 regulates fatty acid and lipid metabolic pathways. For example, C2 improves metabolism of linoleic acid, which mediates root suberin biosynthesis, and enhances P uptake efficiency. In addition, C2 suppresses root jasmonic acid biosynthesis, which depends on α-linolenic acid metabolism, improving C2 colonization and activating P uptake. This study demonstrates that adjusting the endophyte composition can modulate P uptake in B. napus plants, providing a basis for developing agricultural microbial agents.

Date: 2024
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DOI: 10.1038/s41467-024-54112-5

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