Cooperation between arbuscular mycorrhizal fungi and plant growth-promoting bacteria and their effects on plant growth and soil quality

PeerJ

article

Lu Yu¹  Hui Zhang¹  Wantong Zhang¹  Kesi Liu¹  Miao Liu¹  Xinqing Shao¹ 

[1] College of Grassland Science and Technology, China Agricultural University;Qinghai Provincial Key Laboratory of Adaptive Management on Alpine Grassland

关键词: Arbuscular mycorrhizal fungi (AMF);    Plant growth-promoting rhizobacteria (PGPR);    Root morphology;    Soil physicochemical properties;    Plant-microbe interaction;   

DOI  :  10.7717/peerj.13080

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

The roles of arbuscular mycorrhizal fungi (AMF) and plant growth-promoting rhizobacteria (PGPR) in improving nutrition uptake and soil quality have been well documented. However, few studies have explored their effects on root morphology and soil properties. In this study, we inoculated Elymus nutans Griseb with AMF and/or PGPR in order to explore their effects on plant growth, soil physicochemical properties, and soil enzyme activities. The results showed that AMF and/or PGPR inoculation significantly enhanced aboveground and belowground vegetation biomass. Both single and dual inoculations were beneficial for plant root length, surface area, root branches, stem diameter, height, and the ratio of shoot to root, but decreased root volume and root average diameter. Soil total nitrogen, alkaline phosphatase, and urease activities showed significant growth, and soil electrical conductivity and pH significantly declined under the inoculation treatments. Specific root length showed a negative correlation with belowground biomass, but a positive correlation with root length and root branches. These results indicated that AMF and PGPR had synergetic effects on root morphology, soil nutrient availability, and plant growth.

【 授权许可】

CC BY