Purines enrich root-associated Pseudomonas and improve wild soybean growth under salt stress
文献类型： 外文期刊
作者： Zheng, Yanfen 1 ; Cao, Xuwen 2 ; Zhou, Yanan 1 ; Ma, Siqi 1 ; Wang, Youqiang 1 ; Li, Zhe 1 ; Zhao, Donglin 1 ; Yang, Yanzhe 1 ; Zhang, Han 1 ; Meng, Chen 1 ; Xie, Zhihong 3 ; Sui, Xiaona 1 ; Xu, Kangwen 1 ; Li, Yiqiang 1 ; Zhang, Cheng-Sheng 1 ;
作者机构： 1.Chinese Acad Agr Sci, Tobacco Res Inst, Marine Agr Res Ctr, Qingdao 266101, Peoples R China
2.Shandong Univ, Inst Marine Sci & Technol, Qingdao 266200, Peoples R China
3.Shandong Agr Univ, Coll Resources & Environm, Natl Engn Lab Efficient Utilizat Soil & Fertilizer, Tai An 271018, Peoples R China
期刊名称：NATURE COMMUNICATIONS （ 影响因子：14.7； 五年影响因子：16.1 ）
ISSN：
年卷期： 2024 年 15 卷 1 期
页码：
收录情况： SCI
摘要： The root-associated microbiota plays an important role in the response to environmental stress. However, the underlying mechanisms controlling the interaction between salt-stressed plants and microbiota are poorly understood. Here, by focusing on a salt-tolerant plant wild soybean (Glycine soja), we demonstrate that highly conserved microbes dominated by Pseudomonas are enriched in the root and rhizosphere microbiota of salt-stressed plant. Two corresponding Pseudomonas isolates are confirmed to enhance the salt tolerance of wild soybean. Shotgun metagenomic and metatranscriptomic sequencing reveal that motility-associated genes, mainly chemotaxis and flagellar assembly, are significantly enriched and expressed in salt-treated samples. We further find that roots of salt stressed plants secreted purines, especially xanthine, which induce motility of the Pseudomonas isolates. Moreover, exogenous application for xanthine to non-stressed plants results in Pseudomonas enrichment, reproducing the microbiota shift in salt-stressed root. Finally, Pseudomonas mutant analysis shows that the motility related gene cheW is required for chemotaxis toward xanthine and for enhancing plant salt tolerance. Our study proposes that wild soybean recruits beneficial Pseudomonas species by exudating key metabolites (i.e., purine) against salt stress.
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