植物-植食性昆虫-天敌相互关系中化学物质的变化

植物、植食性昆虫、天敌三营养系统中相互作用 ,协调进化 ,其中化学物质的变化起着极为关键的作用 .本文从植物受害后体内化学成分的变化和昆虫信息素两方面来阐述三者之间的关系 .已有的研究结果表明 ,植物在遭受植食性昆虫的为害时 ,能通过改变体内的营养物质的含量 ,释放挥发性次生代谢物质来调节植物、植食性昆虫及其天敌三者之间的相互关系 .

Plant, plant-eating insect, and its natural enemy react upon each other, and evolve harmoniously in the nutrition system where the change of chemical substamces plays a vital role.In this article, the author clarifies the relationships between plant,plant-eating insect , and its natural enemy from two aspects---the change of chemical substances in plant after its being harmed, and the information elements of insect. So many research findings have shown that plant, when attacted by plant-eating insect, will coordinate the relationships between plant, plant-eating insect and its natural enemy, by changing the content of the nutrition substances in its body, and releasing some volatile secondary metabolites.