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综述了茉莉酸 (jasmonicacid ,JA)和茉莉酸甲酯 (methyljasmonate ,MJA)的分子结构和应用其诱导的植物抗虫作用及其机制。植物受外源茉莉酸或茉莉酸甲酯刺激后 ,一条反应途径是由硬脂酸途径激活防御基因 ,另一条途径是直接激活防御基因。防御基因激活后导致代谢途径重新配置 ,并可能诱导植物产生下列 4种效应 :(1)直接防御 ,即植物产生对害虫有毒的物质、抗营养和抗消化的酶类 ,或具驱避性和妨碍行为作用的化合物 ;(2 )间接防御 ,即产生吸引天敌的挥发物 ;(3)不防御 ,即无防御反应 ;(4 )负防御 ,即产生吸引害虫的挥发物
The molecular structures of jasmonicacid (JA) and methyljasmonate (MJA) were summarized and the plant-induced insect resistance and its mechanism were also summarized. After the plant is stimulated by exogenous jasmonic acid or methyl jasmonate, one reaction pathway activates the defense genes by the stearic acid pathway, and the other pathway activates the defense genes directly. Activation of defensive genes leads to rearrangement of metabolic pathways and may induce plants to produce the following four effects: (1) direct defense, that is, plants produce substances that are toxic to pests, anti-nutritional and anti-digestive enzymes, or repellent and (2) Indirect defense, which generates volatile substances that attract natural enemies; (3) Does not defensive, that is, non-defensive reactions; (4) Negative defense, that is, produces a pest-attracting volatile