Journal of Arid Meteorology ›› 2024, Vol. 42 ›› Issue (3): 325-337.DOI: 10.11755/j.issn.1006-7639(2024)-03-0325

• Review • Previous Articles     Next Articles

Research progress and prospect on the interaction between plant root exudates and rhizosphere microorganisms under drought stress

LI Yuanyuan1(), ZHAO Xia2(), YUE Liang2, QIU Yang2   

  1. 1. East China University of Science and Technology, College of bioengineering, Shanghai 200000, China
    2. Gansu Gaolan Field Scientific Observation and Research Station for Agricultural Ecosystem, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
  • Received:2024-02-21 Revised:2024-03-26 Online:2024-06-30 Published:2024-07-11

干旱胁迫下植物根系分泌物与根际微生物相互作用的研究进展与展望

李源源1(), 赵霞2(), 岳靓2, 邱阳2   

  1. 1.华东理工大学生物工程学院,上海 200000
    2.中国科学院西北生态环境资源研究院皋兰生态与农业综合试验站,甘肃 兰州 730000
  • 通讯作者: 赵霞(1986—),女,陕西眉县人,助理研究员,主要从事旱区植物根际微生物研究。E-mail:zhaoxia@lzb.ac.cn
  • 作者简介:李源源(2003—),女,甘肃兰州人,本科在读,就读于生物科学专业。E-mail:1442919679@qq.com
  • 基金资助:
    甘肃省自然科学基金项目(20JR10RA451);甘肃省自然科学基金项目(23JRRA575);甘肃省气象局面上项目(Ms2023-22)

Abstract:

Drought is a major abiotic stress that restricts agricultural production. It not only limits the growth and development of crops, but also affects the delicate balance between plants, rhizosphere microorganisms and root exudates, which is crucial for plant growth and soil health. Therefore, in-depth study of the complex relationship between the three under drought stress will provides scientific basis and technical support for sustainable agricultural development and national food security production. In this paper, the research results on the exudative components and contents of root exudates and the differential changes of rhizosphere microbial communities after drought stress in plants both domestically and internationally were summarized. The recruitment of beneficial microorganisms by root exudates in response to drought stress was analyzed. The mechanism and physiological process of plant growth-promoting rhizobacteria to help plants improve drought tolerance were discussed. The interaction and mutual feedback relationship among host plants, root exudates and rhizosphere microorganisms under drought stress were summarized. On this basis, the changing patterns of root exudates under drought stress, the mechanism of plant drought tolerance, and the key scientific issues and research prospects of the effects of root exudates on rhizosphere microorganisms were proposed, aiming to provide theoretical basis and references for studying and applying methods to improve rhizosphere microbial communities in order to enhance plant drought resistance.

Key words: drought stress, rhizosphere microorganism, root exudate, interactions, research progress

摘要:

干旱是制约农业生产的一种主要非生物胁迫,不仅限制农作物的生长发育,还影响植物与根际微生物、根系分泌物之间的微妙平衡关系,这种平衡对植物生长和土壤健康至关重要。因此,深入研究干旱胁迫下3者之间的复杂关系,为农业可持续发展和国家粮食安全提供科学依据和技术支持。本文总结了国内外关于植物受到干旱胁迫后根系分泌物渗出成分、含量以及根际微生物组差异变化的研究成果,分析了响应干旱胁迫下的根系分泌物对有益微生物的招募作用,讨论了植物根际促生菌帮助植物提高干旱耐受性的作用机制及其生理过程,总结了干旱胁迫下宿主植物、根系分泌物和根际微生物3者的相互作用与互馈关系。在此基础上,提出了干旱环境胁迫下根系分泌物的变化规律、植物的耐旱性机制、以及根系分泌物对根际微生物组影响的关键科学问题和研究展望,旨在为改善根际微生物群落以提高植物抗旱性的研究和应用提供理论依据和参考。

关键词: 干旱胁迫, 根际微生物, 根系分泌物, 相互作用, 研究进展

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