Research progress on jasmonic acid and its methyl ester regulating crop physiology and stress resistance mechanisms

Abstract

Jasmonic acid (JA) and its methyl ester (MeJA), as crucial plant signaling molecules, play a pivotal role in crops’ adaptation to environmental changes, regulation of growth and development, and quality formation. This article systematically summarizes the research progress of JA and MeJA in regulating crop flowering time, enhancing quality and aroma components, boosting antioxidant capacity, regulating secondary metabolite accumulation, preserving fruits, strengthening disease and pest resistance, and improving abiotic stress resistance. It focuses on exploring the molecular mechanisms of their actions and emphasizes the concentration dependence and species specificity of their regulatory effects, providing a reference for further exploring their mechanisms of action and applications in agricultural production.