Coumaric acid stressed soil Raw sequence reads
Based on field-measured values of phenolic acids and curve estimation models from previous research, this study evaluated the allelopathic effects of various types and concentrations of phenolic acids via exogenous addition, identifying coumaric acid as the most potent. We further investigated the impact of varying concentrations of exogenously added coumaric acid on the physiological characteristics of tobacco and the microecological environment of tobacco-cultivated soil. These analyses sought to elucidate potential relationships among the soil environment, rhizosphere microbes, and tobacco plants under coumaric acid stress. Furthermore, this study aimed to clarify the mechanistic role of coumaric acid in tobacco replant disease and provide a theoretical foundation for targeted mitigation of replant diseases in future agricultural practices.