棉铃虫幼虫加单氧酶活性的组织分布  

The tissue distribution of monooxygenase activities of cotton bollworm, Helicoverpa armigera

作　　者：邱星辉[1] 冷欣夫[1] 

机构地区：[1]中国科学院动物研究所农业虫害鼠害综合治理研究国家重点实验室,北京100080

出　　处：《生态学报》2000年第2期299-303,共5页Acta Ecologica Sinica

基　　金：国家自然科学基金!资助项目 ( No.3 9670 4 91 )

摘　　要：棉铃虫 ( H elicoverpa armigera) 6龄幼虫不同组织的加单氧酶活性的测定结果显示 ,对 -硝基苯甲醚 O-脱甲基酶主要分布于外来物质的入口部位 ,以中肠和脂肪体的活性较高 ,在前肠、后肠和马氏管等组织中有相对较低的活性 ,而在体壁和精巢中未检测到 O-脱甲基作用。体壁表现一定的艾氏剂环氧化作用 ,但其活性不及中肠的 1 0 %,内源性抑制剂被证明并非体壁低加单氧酶活性的主要原因。不同组织生物量的差异及其动态变化 。The demethylation of p nitroanisole in various tissues of cotton bollworm, Helicoverpa armigera , was examined. The highest activity of demethylase was found in midgut and fat body. Relatively low activities were expressed in foregut, Malpigian tubules and hind gut. No detectable demethylation existed in testis and integument tissues. Low aldrin epoxylation was detected in integument relative to midgut, and the potential endogenous inhibitor was proved not to be the cause for low p nitroanisole demethylase and aldrin epoxylase activities in integument. The difference and dynamics of tissue biomass were the factors which resulted in the changes in total monooxygenase activities of specific tissue. The midgut and fatbody might play an important role in the xenobiotics metabolism.

关 键 词：棉铃虫 加单氧酶活性 组织分布 幼虫 

分 类 号：S435.622.1[农业科学—农业昆虫与害虫防治]