摘　要：目前，治理重金属污染的方法有很多，其中利用植物与细菌联合治理的方法具有成本低、效益高等优势，受到人们广泛关注。在重金属胁迫下，许多细菌不仅发展出很强的重金属耐受性，而且可以通过溶磷作用、固氮作用、解钾作用、分泌相关代谢产物等途径促进植物生长，也可以通过改变金属流动性、诱导相关基因高表达等途径增强植物对重金属的抵抗能力。本文就细菌与植物协同治理重金属污染的作用机制展开综述，以期为细菌协同植物治理重金属污染的应用和研究提供参考。
关键词：细菌；植物；重金属污染；联合治理；作用机制
中图分类号：Q939.96；X53                    文献标志码：A           DOI：10.3969/j.issn.1007-7146.2022.03.002

Abstract: At present, there are many methods to govern heavy metal pollution, among which the joint governance of plants and bacteria has the advantages of low cost and high benefit, which has attracted extensive attention. Under heavy metal stress, many bacteria not only develop strong tolerance to heavy metals, but also promote plant growth by dissolving phosphorus, fixing nitrogen, dissolving potassium and secreting related metabolites. They can also enhance plant resistance to heavy metals by changing metal fluidity and inducing high expression of related genes. In this paper, the mechanism of bacteria-plants joint governance of heavy metal pollution was reviewed to provide reference for the application and research of bacteria-plants joint governance of heavy metal pollution.
Key words: bacteria; plants; heavy metal pollution; joint governance; mechanism of action
（Acta Laser Biology Sinica, 2022, 31(3): 202-207）