Profiles of spp Isolated from the Rhizosphere of Suaeda glauca and Their Potential to Promote Plant Growth and Suppress Fungal Phytopathogens

Members of the genus are known to play an important role in promoting plant growth and protecting plants against phytopathogenic microorganisms. In this study, 21 isolates of spp. were obtained from the root micro-ecosystem of . Analysis of the 16S rRNA genes indicated that the isolates belong to the species , , , , and . One of the interesting findings of this study is that the four strains B1, B5, B16 and B21 are dominant in rhizosphere soil. Based on , , and gene analyses, B1, B5, and B21 were identified as and B16 was identified as . Estimation of antifungal activity showed that the isolate B1 had a significant inhibitory effect on , B5 and B16 on (syd.) Butl, and B21 on van der Hoeven. The four strains grew well in medium with 1-10% NaCl, a pH value of 5-8, and promoted the growth of . Our results indicate that these strains may be promising agents for the biocontrol and promotion of plant growth and further study of the relevant bacteria will provide a useful reference for the development of microbial resources.