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首页> 外文期刊>Journal of Medical Entomology >The Mosquitocidal Activity of Methanolic Extracts of Lantana cramera Root and Anacardium occidentale Leaf: Role of Glutathione S-Transferase in Insecticide Resistance
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The Mosquitocidal Activity of Methanolic Extracts of Lantana cramera Root and Anacardium occidentale Leaf: Role of Glutathione S-Transferase in Insecticide Resistance

机译：马ram丹和拟南芥叶片甲醇提取物的杀虫活性：谷胱甘肽S-转移酶在抗药性中的作用

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摘要

Larvicidal activity of methanolic plant extracts of Lantana cramera (P1) root and Anacardium occidentale (P2) leaf was investigated against the larvae of the three mosquito species (Culex quinquefasciatus, Anopheles stephensi, and Aedes aegypti reared in the laboratory), and the respective glutathione S-transferase (GST) activity was analyzed as an index of protection against the extracts. The LC50 (extract concentration that shows 50% mortality) values of Pl extract for An. stephensi, Ae. aegypti, and Cx. quinquefasciatus were 132.55,27.82, and 11.68 ppm, respectively, whereas those of P2 extract were 56.81, 912, and 10.79 ppm, respectively. In general, in the untreated groups, the level of GST activity was significantly higher in Ae. aegypti in comparison with An. stephesi and Cx. quinquefasciatus. However, the enzyme activity failed to show any response when treated with either of the plant extracts in Ae. aegypti. However, an increase in the GST activity was recorded in extract-treated larvae of both An. stephensi and Cx. quinquefasciatus. The results of the current study suggest that both the plant extracts show species-specific mosquitocidal potential. Induction of GST activities in survived An. stephensi and Cx. quinquefasciatus larvae suggests the role of this enzyme in conferring resistance to the plant extracts.
机译：研究了马Lan丹（P1）根和西方拟南芥（P2）叶的含甲醇植物提取物对三种蚊虫（库蚊，库氏按蚊和埃及伊蚊）的幼虫以及相应的谷胱甘肽的杀幼虫活性。分析了S-转移酶（GST）活性作为针对提取物的保护指数。 P1提取物对An的LC50（提取物浓度，显示出50％的死亡率）值。斯蒂芬西，爱。 aegypti和Cx。西洋参分别为132.55、27.82和11.68 ppm，而P2提取物分别为56.81、912和10.79 ppm。通常，在未经治疗的组中，Ae中的GST活性水平明显更高。 aegypti与An。 stephesi和Cx。 quinquefasciatus。然而，当用Ae中的任何一种植物提取物处理时，酶活性均未显示出任何反应。埃及。然而，在两种An的提取物处理的幼虫中都记录到了GST活性的增加。斯蒂芬斯和Cx。 quinquefasciatus。目前的研究结果表明，两种植物提取物均具有特定物种的灭蚊潜力。在存活的An中诱导GST活性。史蒂芬斯和Cx。 quinquefasciatus幼虫表明该酶在赋予植物提取物抗性中的作用。

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