Rhizobium Symbiotic Capacity Shapes Root-Associated Microbiomes in Soybean

Liu, Yuanhui and Ma, Bin and Chen, Wenfeng and Schlaeppi, Klaus and Erb, Matthias and Stirling, Erinne and Hu, Lingfei and Wang, Entao and Zhang, Yunzeng and Zhao, Kankan and Lu, Zhijiang and Ye, Shudi and Xu, Jianming. (2021) Rhizobium Symbiotic Capacity Shapes Root-Associated Microbiomes in Soybean. Frontiers in microbiology, 12. p. 709012.

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Root-microbiome interactions are of central importance for plant performance and yield. A distinctive feature of legumes is that they engage in symbiosis with N; 2; -fixing rhizobia. If and how the rhizobial symbiotic capacity modulates root-associated microbiomes are still not yet well understood. We determined root-associated microbiomes of soybean inoculated with wild type (WT) or a; noeI; mutant of; Bradyrhizobium diazoefficiens; USDA 110 by amplicon sequencing. UPLC-MS/MS was used to analyze root exudates. The; noeI; gene is responsible for fucose-methylation of Nod factor secreted by USDA 110 WT strain. Soybean roots inoculated with the; noeI; mutant showed a significant decrease in nodulation and root-flavonoid exudation compared to roots inoculated with WT strain. The; noeI; mutant-inoculated roots exhibited strong changes in microbiome assembly in the rhizosphere and rhizoplane, including reduced diversity, changed co-occurrence interactions and a substantial depletion of root microbes. Root exudates and soil physiochemical properties were significantly correlated with microbial community shift in the rhizosphere between different rhizobial treatments. These results illustrate that rhizobial symbiotic capacity dramatically alters root-associated microbiomes, in which root exudation and edaphic patterns play a vital role. This study has important implications for understanding the evolution of plant-microbiome interactions.
Faculties and Departments:05 Faculty of Science > Departement Umweltwissenschaften > Integrative Biologie > Plant-Microbe Interaction (Schl├Ąppi)
UniBasel Contributors:Schl├Ąppi, Klaus
Item Type:Article, refereed
Article Subtype:Research Article
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:10 Feb 2022 09:14
Deposited On:10 Feb 2022 09:14

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