敌百虫对蚯蚓体内3种抗氧化酶活性的影响

采用酶活性测定方法检测了染毒后赤峰市区周边蔬菜大棚中蚯蚓体内抗氧化酶活性的变化。敌百虫对蚯蚓体内超氧化物歧化酶、过氧化物酶、谷胱甘肽过氧化物酶活性均有影响。SOD与POD活性变化趋势相似,酶活性呈现先上升再下降的现象,但是促进POD酶活性上升的敌百虫浓度比促进SOD酶活性上升的浓度要低。敌百虫对GSH-Px酶活性的影响表现为抑制作用。在敌百虫胁迫下,蚯蚓体内SOD、POD、GSH-Px响应不同,敌百虫对SOD活性影响最大、POD次之、GSH-Px最小。

TEffect of Trichlorfon on the Activities of Three Antioxidant Enzymes of Earthworm

In this study,changes of activity of antioxidant enzyme of earthworm in vegetable greenhouse in Chifeng after infected by Trichlorfon were detected.The results showed that Trichlorfon have an impact on superoxide dismutase(SOD),peroxidase enzyme(POD) and glutathione peroxidase(GSH-px) activity of earthworm.SOD and POD activity showed a similar tendency,i.e.,increased at first and then declined.POD activity increased at lower trichlorfon concentrations than SOD activity.The trichlorfon inhibited the activity of GSH-Px.Under The stress of trichlorfon,SOD,POD,GSH-Px of earthworms responded differently.Effect of trichlorfon on SOD was the greatest,followed by POD,and GSH-Px was the minimum.