咪鲜胺及其制剂和主要代谢物对三叶浮萍SOD和POD活性的影响  

Effect of Prochloraz,Its Formulation and Major Metabolites on the Activities of SOD and POD in Lemna paucicostata

作　　者：卫麦霞[1] 龚道新[2] 黎定军[1] 任竞[2] 刘名扬[2] 汪传刚[2] 

机构地区：[1]湖南农业大学烟草工程技术研究中心,湖南长沙410128 [2]湖南农业大学农业环境保护研究所,湖南长沙410128

出　　处：《农业环境科学学报》2008年第3期1072-1076,共5页Journal of Agro-Environment Science

基　　金：农业部与德国艾格福公司协作项目(NYBNYCL20000158)

摘　　要：为了全面正确地评价咪鲜胺及其制剂和主要代谢物施用后的生态环境效应和生物毒性,以三叶浮萍(Lemna Paucicostata)为实验材料,采用光照恒温培养法,研究了咪鲜胺及其制剂和主要代谢物(包括BTS44595、BTS44596和BTS45186)对三叶浮萍体内超氧化物歧化酶(SOD)和过氧化物酶(POD)活性的影响。结果表明,随着处理浓度的升高,Prochloraz、Sportak、BTS44595和BTS44596对SOD活性和POD活性的影响由激活作用转变为抑制作用,而BTS45186对SOD和POD活性的影响则表现为抑制作用,且浓度越高,对SOD和POD活性的抑制作用越强;Prochloraz和Sportak对SOD和POD活性的影响较大,但两者之间的差异不大,不过Prochloraz对三叶浮萍的SOD和POD活性的影响早于Sportak的影响。Prochloraz及其主要代谢产物对SOD和POD活性影响的大小顺序为:BTS45186>Prochloraz>BTS44596>BTS44595。这说明Prochloraz降解为代谢产物BTS44595和BTS44596的过程是一个毒性下降的解毒过程,而BTS44595和BTS44596降解为BTS45186的过程是一个毒性上升的增毒过程。The effects of Prochloraz, its formulation and major metabolites （including BTS44595, BTS44596 and BTS45186） on superoxide dismutase （SOD） and peroxidase （POD） in Lemnapaucicostata were studied. The results indicated that, with treatment concentration increasing, the effect of Prochloraz, Sportak, BTS44595 and BTS44596 on the activities of SOD and POD changed from activation to inhibition, but BTS45186 inhibited increasingly their activities. Although Prochloraz and Sportak had a great influence on POD and SOD, there was minor difference between them. Prochloraz activated SOD and POD earlier than that of Sportak. Effects of Prochloraz and its major metabolites on the activities of SOD and POD followed the order： BTS45186〉Prochloraz〉BTS44596〉BTS44595, suggesting that the metabolization of Prochloraz was a detoxicification process with toxicity decreasing, while degradation of BTS44595 and BTS44596 was an intoxication process with toxicity increasing.

关 键 词：咪鲜胺 制剂 代谢物 SOD POD 三叶浮萍 影响 

分 类 号：X592[环境科学与工程—环境工程]