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Repellent action and contact toxicity mechanisms of the essential oil extracted from Chinese chive against Plutella xylostella larvae
Author(s) -
Gao Quan,
Song Li,
Sun Jia,
Cao HaiQun,
Wang Likun,
Lin Huafeng,
Tang Feng
Publication year - 2019
Publication title -
archives of insect biochemistry and physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.576
H-Index - 66
eISSN - 1520-6327
pISSN - 0739-4462
DOI - 10.1002/arch.21509
Subject(s) - plutella , carboxylesterase , biology , toxicity , larva , insect repellent , pesticide , cholinesterase , toxicology , essential oil , glutathione , pharmacology , botany , enzyme , biochemistry , chemistry , agronomy , ecology , organic chemistry
Botanical pesticides play increasingly important roles in the control of agricultural pests. In this study, the insecticidal effects, specifically the repellent action and contact toxicity, of the essential oil extracted from Chinese chive (EOC) against Plutella xylostella larvae were confirmed. The mechanisms of repellent’s action were studied using electroantennograms (EAGs), and the effects on glutathione S ‐transferase (GST), carboxylesterase (CarE), and acetyl cholinesterase were investigated after EOC treatments. The EOC affected the EAG results and inhibited the activities of GST and CarE in treated P. xylostella larvae, which could explain its insecticidal effects. And, four pyrazines showed greater repellent activities than that of the EOC, which was confirmed as the main active compounds of EOC.