Methyl jasmonate is a plant hormone derived from jasmonic acid that regulates growth, ripening, senescence, and defense responses in plants. When applied to crops before harvest, it can boost the production of protective compounds and aroma volatiles, improving flavor, color, and stress tolerance in fruits and vegetables, and it can help control fruit abscission and development timing. It also occurs naturally as a fragrant component of jasmine tea, jasmine flowers, and some fruits. Researchers study it as a tool for enhancing postharvest quality and reducing pesticide dependence, since jasmonate-treated plants mount stronger defenses against pathogens. Because it is a natural plant signal rather than a synthetic pesticide, it fits well into integrated and organic production systems.