虫害诱导植物防御的分子机理研究进展

从虫害诱导的系统损伤信号、昆虫特异性激发子、间接防御、直接防御和负防御等方面,综述了虫害诱导植物防御的最新研究进展.在植物与昆虫的相互进化过程中,植物利用诱导防御物质对付昆虫的危害,昆虫则利用其特有的激发子降低植物的防御反应.文中比较了间接防御涉及的4种代谢途径,以及诱导挥发物释放的机制;阐明了虫害诱导植物直接防御的概念、防御物质及其作用机理;分析了虫害诱导植物负防御的机制.同时,也强调了虫害诱导林木防御反应的分子机理.

Molecular mechanisms of insect pests-induced plant defense.

This paper reviewed the newest research advances in insect pests-induced plant defense, including insect pests-induced system wounding signals of plants, elicitors of insects, indirect defense, direct defense, and negative defense. In the interactions between plants and insect pests, plants can use the induced defensive substances to counteract insect pests, while the latter can use their specific elicitors to beat plant defense. This paper also compared the four metabolic pathways involved in indirect defense, i. e., lipoxygenase pathway, isoprenoid pathway, shikimate pathway, and extrfloral nectar, discussed the release mechanisms of induced volatile organic compounds in plants, and illustrated the conception of direct defense, defensive substances, and their action mechanisms. Finally, the research advances in the mechanisms of inset pests-induced negative defense of plants were reviewed, with the focus on the molecular mechanisms of insect pests-induced defense of forests.