Research Progress on Plant Growth Promoting Rhizobacteria to Alleviate Abiotic Stress Tolerance of Horticultural Crops
Plant growth-promoting rhizobacteria can change the morphological or physiological characteristics of plants by fixing nitrogen,solubilizing phosphorus,solubilizing potassium,generating iron carriers,secreting secondary metabolites and phytohormones,and regulating plant stress resistance genes to increase the utilization rate of nutrients in plants and thus improve the yield,quality,and stress resistance of plants.The research progress of plant growth-promoting rhizobacteria in enhacing the resistance of horticultural crops to drought,extreme temperature,heavy metals and salt stress,and the prospects and directions of their application are outlined.