Biotechnology Bulletin ›› 2020, Vol. 36 ›› Issue (9): 64-74.doi: 10.13560/j.cnki.biotech.bull.1985.2020-0746

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Research Progress on Salt Tolerance and Growth-promoting Mechanism of Bacillus

HU Yu-jie1, ZHU Xiu-ling1, DING Yan-qin1,2, DU Bing-hai1,2, WANG Cheng-qiang1,2   

  1. 1. School of Life Sciences,Shandong Agricultural University,Tai 'an 271018;
    2. Shandong Engineering Research Center of Plant-Microbial Restoration for Saline-Alkali Land/Shandong Key Laboratory of Agricultural Microbiology,Tai'an 271018
  • Received:2020-06-17 Online:2020-09-26 Published:2020-09-30

Abstract: Soil salinization seriously restricts the development of agriculture and this is one of urgent problems to be solved in China. Bacillus has strong stress resistance and excellent salt tolerance,thus which can alleviate the damage caused by salt stress and improve the salt tolerance of plants. This paper briefly summarizes the general characteristics and application of Bacillus as well as the salt-tolerant genes of Bacillus,and reviews the salt-tolerant and growth-promoting mechanism of Bacillus on plant growth from seven aspects. In addition,this paper also discusses some issues in the research and development of Bacillus,and prospects the interactions between Bacillus as plant rhizosphere growth-promoting bacterium and plants or soil,aiming to provide theoretical reference for the improvement of saline-alkali land,the industrial application of microbial strains,and the growth promotion of crops.

Key words: Bacillus, salt tolerance mechanism, salt stress, growth promotion, PGPR