Functions of Plant Growth-Promoting Bacteria and Their Application in Sustainable Agriculture

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Supported by the Fundamental Research Funds for the Central Universities of China (No. SWU 020010), the Natural Science Foundation of Chongqing, China (No. cstc2021jcyj-msxmX0827), the Returned Overseas Students’ Entrepreneurship and Innovation Support Program of Chongqing, China (No. cx2021001) and the Science and Technology Research Program of Chongqing Municipal Education Commission, China (No. KJZD-K202200204)

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    Global climate change and population growth exacerbate various biotic (e.g., infection of pathogens) and abiotic (e.g., drought, salinity, high temperature, etc.) stress in agricultural production, which impede plant growth, development and productivity by affecting plant morphology, physiological and biochemical characteristics as well as metabolic functions. Consequently, this affects crop yield and quality and seriously threatens agricultural sustainability. With the vigorous development of modern agriculture, beneficial microorganisms have attracted much attention due to their ability to improve soil quality and fertility, stress tolerance in crops, and their yield and quality. Besides, the proper use of microbial inoculum in agricultural production can achieve the effects of reducing the amounts of agrochemicals, reducing production costs, improving the quality of agricultural products, and protecting the ecological environment, which is also in line with the agricultural production goal of harmonious coexistence between humans and nature. In this review, the types and application effects of plant growth-promoting bacteria (PGPB) were briefly summarized, with emphasis on the analysis of PGPB's ability to produce phytohormone, fix nitrogen, facilitate the absorption and utilization of nutrients (phosphate and potassium solubilization and siderophore production), alleviate biotic and abiotic stress, regulate plant root architecture and rhizosphere microbial community structure. Moreover, the frontier science and technology of PGPB inoculum preparation and application methods in modern agriculture in recent years were systematically explored, and the application prospect and research direction of PGPB in future agricultural production were further discussed.

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MA Ying, CAO Mengyuan, SHI Xiaojun, LI Zhenlun, LUO Yongming. Functions of Plant Growth-Promoting Bacteria and Their Application in Sustainable Agriculture[J]. Acta Pedologica Sinica,2023,60(6):1555-1568.

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  • Received:March 16,2022
  • Revised:September 29,2022
  • Adopted:November 08,2022
  • Online: November 11,2022
  • Published: November 28,2023