Research advances in microbial degradation of phenolic acids with allelopathic effects

Abstract:

In recent years, continuous cropping obstacles have become increasingly serious, leading to adverse impacts on agricultural production and sustainable development. The causes of these obstacles are complex, in which phenolic acid toxicity is a key factor. The most economical, environmentally friendly, and effective method for removing phenolic acids is biological control. In this review, the microorganisms involved in phenolic acid degradation and their phenolic acid substrate ranges were investigated. The metabolic pathways, key enzymes, and molecular mechanisms of ferulic, vanillic, syringic, and protocatechuic acid degradation were reviewed, which enriched the knowledge of the degradation process. Furthermore, we discussed the application of phenolic acid-degrading microorganisms in improving crop rhizosphere and alleviating continuous cropping obstacles and presented the existing problems and prospects, aiming to provide a theoretical reference for further research and development. This review provides a knowledge base for the application of microbial resources in addressing continuous cropping obstacles and promoting the sustainable development of modern agriculture.