Soybean nodulation shapes the rhizosphere microbiome to increase rapeseed yield

作者：Yü Liu, Qin Han, Jiaming Zhang, Xuehai Zhang, Yuqin Chen, Mingbo Li, Yongfang Hao, Yujie Hong, Ruizhen Tang, Brett J. Ferguson, Peter M. Gresshoff, Jie Kuai, Guangsheng Zhou, Xia Li, Hongtao Ji · 发表于：Journal of Advanced Research · 年份：2024 · DOI：10.1016/j.jare.2024.11.034 · 被引用次数：12 · 研究领域：Legume Nitrogen Fixing Symbiosis、Plant-Microbe Interactions and Immunity、Soil Carbon and Nitrogen Dynamics

• Decoding Soybean Root Secretions: By analyzing secretions within the soybean root secretome across three different soybean nodulation genotypes with the same background, we discovered that supernodulating soybeans secrete higher levels of fatty acids and carbohydrates. • Bacterial Communities Clarification: Investigating the rhizosphere bacterial communities of soybeans with varying nodulation patterns in central China, we identified Sphingomonadaceae as the predominant rhizosphere bacteria associated with soybean nodulation capacity. • Metabolites and Bacterial Attraction: The soybean root secretes a metabolite called cis -4-hydroxy-D-proline, which attracts the accumulation of Sphingomonadaceae species in the soybean rhizosphere. Furthermore, oleic acid and cis -4-hydroxy-D-proline provide essential carbon nutrients for the growth of Sphingomonadaceae species. • Promoting Oilseed Growth: Exogenous application of Sphingomonadaceae bacteria, either alone or in combination with rhizobia, can effectively promote subsequent rapeseed growth. • These findings elucidate the role of soybean nodulation in rhizosphere bacterial dynamics, highlighting its importance in sustainable agricultural practices. Crop rotation, a crucial agricultural practice that enhances soil health and crop productivity, is widely used in agriculture worldwide. Soybeans play a crucial role in crop rotation owing to their nitrogen-fixing ability, which is facilitated by symbiotic bacteria in their root syst...