With the prolonged continuous cultivation of Chrysanthemum morifolium(Chuju),a substantial accumulation of phenolic acid compounds has occurred in the soil.Phenolic acid-degrading bacteria can alleviate the obstacles of continuous cropping by degrading these compounds in the soil.In this study,85 strains of phenolic acid-degrading bacteria were isolated from the continuous cropping soil of Chrysanthemum morifolium.By evaluating the degradation efficiency and growth-promoting effects of these strains,a rhizosphere-promoting bacterium with the ability to degrade phenolic acids in Chrysanthemum morifolium was selected.Identification results revealed that the strain belonged to the Burkholderia genus VA-7,exhibiting a degradation rate of over 45%for various phenolic acids.Additionally,the strain demonstrated capabilities for nitrogen fixation,phosphorus solubilization,potassium release,iron carrier production,and indole-3-acetic acid(IAA)synthesis.This study provides a new theoretical basis for alleviating the continuous cropping obstacles of Chrysanthemum morifolium.
维普
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