Progress on the Mechanism of PGPR to Promote Plant Growth and Enhance Cadmium Tolerance in Plants
With the development of modern agriculture,the application of traditional fertilizers and pesticides is no longer in line with the concept of sustainable development of modern agriculture,and biological control will become the mainstream of agricultural development.And from plant rhizo-sphere bacteria(Plantgrowth-promotingrhizobacteria,PGPR)on plant growth,art has the important role in regulating,caused the soil microbiology,ecology and botany the wide attention of scholars.Based on the current research status of PGPR,this paper summarized the mechanism of PGPR to enhance plant absorption of nitrogen,phosphorus and iron,regulate plant root hormone levels to promote plant growth and development,and enhance plant tolerance to stress through various indirect effects.Taking cadmium stress as an example,the mechanism of PGPR to enhance plant tolerance to stress was systematically described,in order to provide scientific basis for the subsequent develop-ment and research of synthetic bioagents using PGPR as raw materials.
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