Coordination between Bradyrhizobium and Pseudomonas alleviates salt stress in soybean through altering root system architecture

Journal of plant interactions

article

Dilfuza Egamberdieva¹  Stephan Wirth¹  Dilfuza Jabborova³  Leena A. Räsänen⁵  Hong Liao⁴ 

[1] Institute of Landscape Biogeochemistry, Leibniz Centre for Agricultural Landscape Research (ZALF);Faculty of Biology, National University of Uzbekistan;Institute of Genetics and Plant Experimental Biology, Academy of Sciences of Uzbekistan;Root Biology Center, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University;Department of Food and Environmental Sciences, University of Helsinki

关键词: Rhizobacteria;    soybean;    salt stress;    nutrient uptake;    soluble leaf protein;   

DOI  :  10.1080/17429145.2017.1294212

学科分类：纳米科学和纳米技术

来源: Taylor & Francis

【 摘 要 】

It is a well accepted strategy to improve plant salt tolerance through inoculation with beneficial microorganisms. However, its underlying mechanisms still remain unclear. In the present study, hydroponic experiments were conducted to evaluate the effects of Bradyrhizobium japonicum USDA 110 with salt-tolerant Pseudomonas putida TSAU1 on growth, protein content, nitrogen, and phosphorus uptake as well as root system architecture of soybean ( Glycine max L.) under salt stress. The results indicated that the combined inoculation with USDA 110 and TSAU1 significantly improved plant growth, nitrogen and phosphorus contents, and contents of soluble leaf proteins under salt stress compared to the inoculation with the symbiont alone or compared to un-inoculated ones. The root architectural traits, like root length, surface area, project area, and root volume; as well as nodulation traits were also significantly increased by co-inoculation with USDA 110 and TSAU1. The plant-growth promoting rhizobacteria (PGPR) P. putida strain TSAU1 could improve the symbiotic interaction between the salt-stressed soybean and B. japonicum USDA 110. In conclusion, inoculation with B. japonicum and salt-tolerant P. putida synergistically improved soybean salt tolerance through altering root system architecture facilitating nitrogen and phosphorus acquisition, and nodule formation.

【 授权许可】

CC BY|CC BY-NC