Frequently Asked Questions Live Chat and Frequently Asked Questions are available for this Product. Other Notes Note: This product is a clear, colorless to very light yellow oil that adheres to the surface of the vial. Application Jasmonic acid (JA) is a plant hormone derived from linolenic acid. Jasmonic acid is involved in plant cell signaling responses to abiotic and biotic stress. JA is involved in the regulation of processes that include growth inhibition, senescence, flower development, leaf abscission and tendril coiling. JA is also involved in wound healing of plants and systemic acquired resistance to attack by insects. |