›› 2004, Vol. 47 ›› Issue (4): 507-514.

• 研究论文 • 上一篇    下一篇

外源茉莉酸和茉莉酸甲酯诱导植物抗虫作用及其机理

桂连友1,2,刘树生1,陈宗懋2*   

  • 出版日期:2004-08-20 发布日期:2004-08-20

Plant resistance to insects induced by application of exogenous jasmonic acid and methyl jasmonate

GUI Lian-You1,2, LIU Shu-Sheng1, CHEN Zong-Mao2*   

  • Online:2004-08-20 Published:2004-08-20
  • Contact: CHEN Zong-Mao

摘要: 综述了茉莉酸(jasmonic acid, JA)和茉莉酸甲酯(methyl jasmo nate, 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。

关键词: 茉莉酸, 茉莉酸甲酯, 植物抗虫作用, 诱导

Abstract: This article reviews the molecular structures of jasmonic acid (JA) and methyl jasmonate (MJA), the resistance to insects by plants induced by application of exogenous JA and MJA and the induction mechanisms. In many plants, defense systems against insect herbivores can be induced by application of exogenous JA or MJA. Exogenous JA or MJA can activate plant defense genes either via the octadecanoid pathway or acting directly on the genes. Activation of defense genes leads to metabolic reconfiguration to produce the following four types of responses: (1) direct defense: production of toxic compounds, protein ase inhibitors and oxidative enzymes, and behaviour-modifying volatiles against herbivores; (2) indirect defense: production of volatiles for recruiting natural enemies of herbivores; (3) no defense; and (4) negative defense: production of volatiles attractive to herbivores.

Key words: Jasmonic acid, methyl jasmonate, plant resistance to insects, induction