锡兰肉桂丙酮粗提物对皮氏叶螨的毒力及其代谢酶活性的影响

The toxicity of Cinnamomum zexlanicum Nees acetone extract to Tetranychus piercei McGregor and its effects on several esterases

试验研究锡兰肉桂丙酮粗提物对皮氏叶螨的毒力及其代谢酶活性的影响结果表明,锡兰肉桂丙酮粗提物对皮氏叶螨具有较强的毒杀作用,处理后24h LC50值为3.5642mg/mL,其6.67mg/mL、4.44mg/mL、3.34mg/mL对皮氏叶螨的48h和72h校正死亡率分别为95.45%和98.84%、85.23%和90.70%、81.82%和87.21%;5.0μg/mL、4.0μg/mL、3.0μg/mL、2.0μg/mL和1.0μg/mL浓度下锡兰肉桂丙酮粗提物对皮氏叶螨酯酶、羧酸酯酶、碱性磷酸酯酶、酸性磷酸酯酶活性均有抑制作用,且其作用大小均随处理浓度的增加而增强。

The toxicity of Cinnamomum zexlanicum Nees acetone extract to Tetranychus piercei McGregor and its effects on several esterase were studied. The results show that the Cinnamomum zexlanicumacetone extract has a good activity to Tetranychus piercei. The LC50 value is 3. 5642mg/mL after 24 h of treatment ; the corrected mortalities are respectively 95.45% and 98.84% ,85.23% and 90.70% ,81.82% and 87.21% after 48 h and 72 h of treatment at 6.67mg/mL, 4.44mg/mL and 3.34mg/mL concentrations; the results also indicate that Cinnamomum zexlanicum acetone extract significantly inhibits esterase, carboxylesterase, alkaline phosphate esterase and acid phosphate esterase activities in Tetranychus piercei under various acetone extract concentrations of 5.0μg/mL, 4.0μg/mL, 3.0μg/mL, 2.0μg/mL and 1.0 μg/mL; the higher the treatment concentration, the heavier the inhibition.