由取食经验介导的B型烟粉虱羧酸酯酶的滞留效应研究(英文)  

The effect of feeding experience on the carboxylesterase activity of Bemisia tabaci B biotype(Homoptera: Aleyrodidae)

作　　者：徐齐云[1] 柴芳华[2] 安新城[1] 

机构地区：[1]广东省昆虫研究所,广州510260 [2]中国科学院华南植物园,广州510520

出　　处：《环境昆虫学报》2013年第6期754-757,共4页Journal of Environmental Entomology

基　　金：China National Nature Science Funds(30970438,31071708)

摘　　要：B型烟粉虱是一种世界广布的危险性农业害虫,在农药抗性和寄主利用能力方面具有突出表现,每年对于全球农业包括蔬菜、果树、园林植物和多种经济作物造成严重危害。通常认为烟粉虱的寄主适应性与其体内旺盛的解毒酶相关,本文以羧酸酯酶为研究对象,调查了分别以黄瓜和苦瓜作为背景取食3代的两个烟粉虱群体,在转移到相同的13种新寄主植物上后羧酸酯酶的活性水平,结果显示取食苦瓜的群体在新寄主上的平均酶活性水平要显著高于以黄瓜为取食背景的群体,说明烟粉虱的取食经验能够短期内在生理水平上产生有利于烟粉虱寄主利用的适应变化,即由寄主植物诱导产生的较高水平的解毒酶活性表达能够保持并用于后续开拓新的寄主资源。The sweetpotato whitefly, Bemisia tabaci B biotype, is a dangerous agricultural pest with widespread distribution due to its high resistance to insecticides and strong host utilization. This results in severe damage on vegetables, fruit trees, ornamental plants and several economical crops. It is widely believed that the evolutionary fitness of the whitefly can be attributed to its ability to metabolize host plants using detoxification enzymes. In this study, the carboxylesterase （CarE） activity of two groups of Bemisia tabaci B biotype was investigated. The two groups, with their original host being cucumber and bitter melon for 3 generations, were transferred to 13 new hosts. It was found that CarE activity level is significantly higher for the bitter melon group than the cucumber group, which indicates that feeding experience could have a prolonged effect to the physiology of the whitefly and enable them to improve adaptation to new host plants.

关 键 词：烟粉虱 羧酸酯酶 寄主利用 

分 类 号：Q965[生物学—昆虫学]