Biotechnology Bulletin ›› 2021, Vol. 37 ›› Issue (2): 174-186.doi: 10.13560/j.cnki.biotech.bull.1985.2020-0831

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Research Advances on Enhancement of Plant Resistance to Salinity Stress by Rhizobacteria Containing ACC Deaminase

WANG Qi-yuan1,3(), WANG Jia-chen2, YE Lei1, JIANG Fan1()   

  1. 1. College of Life Science,Beijing Normal University,Beijing 100875
    2. Institute of Plant Nutrition and Resources,Beijing Academy of Agriculture and Forestry Sciences,Beijing 100089
    3. State Grid(Beijing)Integrated Energy Planning and D & R Institute,Beijing 100082
  • Received:2020-07-07 Online:2021-02-26 Published:2021-02-26
  • Contact: JIANG Fan E-mail:qywang0805@126.com;jiangfan@bnu.edu.cn

Abstract:

Salinity is a major factor inhibiting plant growth. High concentration salinity is adverse to the growth and development of plants,and even leads to plant death when at serious level. A large number of experimental results have shown that the rhizobacteria containing ACC-deaminase may alleviate hazards of the high salinity to plants. The ACC-deaminase degrades ACC(1-aminocyclopropane-1-carboxylic acid,the precursor of ethylene in all higher plants),which results in the decrease of the synthesis of stressed ethylene. The stressed ethylene is the major cause to retard plant growth. In this review,we provided the concept of the plant growth-promoting rhizobacteria(PGPR),overviewed the toxic effects of high salinity on plants,the biosynthesis and physiological effects of ethylene,and emphatically elaborated the physiological mechanisms of underlying the ACC deaminase-containing rhizobacteria and improving plant tolerance to the high salinity. It is aimed to provide the theoretical support for the application of this type of bacterium in agriculture in the coming years.

Key words: plant growth-promoting rhizobacteria(PGPR), ACC deaminase, salinity stress, ethylene