Effects of deoxypodophyllotoxin on the activity of AchE and ATPase in the head of 3rd instar larvae of Pieris rapae L.
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    Abstract:

    Objective:To investigate toxicity of deoxypodophyllotoxin(DOP) against 3rd instar larvae of Pieris rapae L. and its effects on activities of AChE and ATPase, and to study its insecticidal mechanism. Methods:The toxicity of DOP was measured with leaf-dipping method. The activites of enzymes were determined with AChE and ATPase assay kit. Result:① DOP exhibited toxicity against 3rd instar larvae of P. rapae L. This toxicity is concentration-time-dependent with LC50=151.87 mg/L(at 48 h)>LC50=39.99 mg/L (at 72 h)> LC50=10.60 mg/L(at 96 h).② DOP did not affect the activity of AChE. ③ DOP profoundly inhibited the activity of ATPase at high concentration(125 mg/L). DOP at middle concentration(5,25 mg/L) showed activative effect at 24 h,then recovered at 48 h, and maintained normal(5 mg/L) or exhibited inhibitory effect(25 mg/L) at 72 h. Conclusion:DOP exhibited toxicity against 3rd instar larvae of P. rapae L. AChE is not target of deoxypodophyllotoxin and ATPases may be one important target of deoxypodophyllotoxin.

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张守刚,刘艳青,高 蓉,何 斌,赵鸿雁,狄旭东,程 洁,田 瑄,肖 杭.脱氧鬼臼毒素对3龄菜青虫头部AChE、ATPase活性的影响[J].南京医科大学学报(自然科学版英文版),2007,(6):542-545.

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  • Received:November 20,2006
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