Biocontrol efficacy of apigenin isolated from Anisomeles indica (L.) Kuntze against immature stages of Culex quinquefasciatus (Say, 1823) and its in silico studies

被引:15
作者
Samuel, Rajan [1 ]
Pathalam, Ganesan [2 ]
Babu, Velmurugan [1 ]
Kamaraj, Ragavendran [2 ]
Subramanian, Mutheeswaran [2 ]
Antony, Stalin [3 ]
Sanmugapriya, Nagul Kumar [4 ]
Palaniswamy, Senthilkumaar [1 ]
Savarimuthu, Ignacimuthu [2 ]
机构
[1] Sir Theagaraya Coll, PG & Res Dept Zool, Chennai 600021, Tamil Nadu, India
[2] Xavier Res Fdn, St Xaviers Coll, Tirunelveli 627002, Tamil Nadu, India
[3] Zhejiang A&F Univ, Dept Tradit Chinese Med, State Key Lab Subtrop Silviculture, Hangzhou, Peoples R China
[4] Bharathi Womens Coll, PG & Res Dept Bot, Broadway Rd, Chennai 600108, Tamil Nadu, India
来源
BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY | 2023年 / 48卷
关键词
Anisomeles indica; Apigenin; Culex quinquefasciatus; Histopathology; Growth disruption; In silico studies; AEDES-AEGYPTI; INSECTICIDE RESISTANCE; DIPTERA-CULICIDAE; SYNTHETIC PYRETHROIDS; ANOPHELES-STEPHENSI; LARVICIDAL ACTIVITY; VECTOR; COMPOUND; TOXICITY; PROTEIN;
D O I
10.1016/j.bcab.2023.102637
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Culex quinquefasciatus is a vector of medical importance since it transmits pathogens to humans, and domestic and wild animals. Synthetic chemical insecticides which are widely used to control mosquitoes are also reported to cause severe threats to humans, non-target organisms and the environment. However, bioactive products derived from plants for mosquito control are eco-friendly, target-specific, safe to non-target organisms, biodegradable, less toxic and reduce de-velopment of drug resistance. Therefore, the goal of the present study was to evaluate the bio-control efficacy of Anisomeles indica (L.) Kuntze on immature stages namely eggs, pupae, and lar-vae of Cx. quinquefasciatus. In the preliminary screening, hexane and chloroform extracts were found active which were blended and subjected to column chromatography that finally yielded the active phytochemical apigenin. Against Cx. quinquefasciatus, apigenin caused 74% egg mor-tality at 2 ppm concentration after 120 h of exposure, 72% larvicidal activity with LC50 and LC90 values of 1.3 and 3.9 ppm, respectively, after 24 h, and 65% pupicidal activity with LC50 and LC90 values of 1.3 and 3.7 ppm, respectively, after 24 h exposure. Histopathology study of the exposed larvae revealed that apigenin caused damages on the midgut epithelial columnar cells and remarkable deformities in their structural development, whereas no toxicity was caused on the tested non-target organisms, Gambusia affinis (mosquito fish) and Diplonychus indicus (water bug). Docking study demonstrated that apigenin bounded and inhibited AChE1 of Cx. quinque-fasciatus, which resulted in larval mortality. The present study manifested that the isolated metabolite apigenin from A. indica could be a promising biopesticide to control vector mosqui-toes.
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页数:13
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