Methyl jasmonate (abbreviated MeJA) is a volatile organic compound used in plant defense and many diverse developmental pathways such as seed germination, root growth, flowering, fruit ripening, and senescence. Methyl jasmonate is derived from jasmonic acid and the reaction is catalyzed by S-adenosyl-L-methionine:jasmonic acid carboxyl methyltransferase. Plants produce jasmonic acid and methyl jasmonate in response to many biotic and abiotic stresses (in particular, herbivory and wounding), which build up in the damaged parts of the plant. The methyl jasmonate can be used to signal the original plant’s defense systems or it can be spread by physical contact or through the air to produce a defensive reaction in unharmed plants. The unharmed plants absorb the airborne MeJA through either the stomata or diffusion through the leaf cell cytoplasm. An herbivorous attack on a plant causes it to produce MeJA both for internal defense and for a signaling compound to other plants.

CAS：39924-52-2
中文别名：茉莉酮酸甲酯;茉莉酸甲酯;
英文别名：Methyl epi-jasmonate;jasmonic acid methyl ester;cis-methyl jasmonate;Methyl 2-pentenyl-3-oxocyclopentaneacetate;
分子式：C13H20O3
分子量：224.296
精确质量：224.141
Psa：43.37
Logp：2.5011

EINECS号：254-705-5

外观与性状：透明至淡黄色液体
密度：1.003 g/cm3
沸点：110ºC
闪点：128.6ºC
折射率：n20/D 1.474(lit.)