Acta Entomologica Sinica (1997) 40, 122-127

Xiwu Gao, Xiangli Dong, Bingzong Zheng and Qing Chen (1997)
[Glutathione S-transferase (GSTs) of Helicoverpa armigera: induction of insecticides and plant allelochemicals and metabolism of insecticides]
Acta Entomologica Sinica 40 (2), 122-127
Abstract: Induction of glutathione S-transferases (GSTs) by insecticides and plant allelo-chemicals, and metabolism of insecticides by GSTs were investigated during 1992~1995 in cotton bollworms, Helicoverpa armigera (Hübner). GSTs of the midguts from cotton bollworms metabolized parathion-methyl and methomyl more quickly than diethylmaleate, o, o-diethyl-phenyl phosphorothioate (SV₁) and mixtures of parathion-methyl and methomyl. At 24h or 48h after treatment with LD₅, of parathion or methomyl, the GSTs activity of cotton bollworms did not increase. Selection of LD₅₀ of parathion made GSTs activity increase 15% while selection of LD₅₀ of methomyl had no effect on GSTs activity. Midgut GSTs activity in cotton bollworm larvae was induced up to 18-fold by feeding on the artificial diet containing 0. 01% of quercitrin compared with activity in larvae only fed with artificial diet and up to 4-fold compared with activity in larvae fed with the diet containing 2-tridecanone or rutin. Toxicity of parathion-methyl to larvae of cotton bollworms reduced about 50% due to feeding on the diet with quercitrin. But the 0. 01% of rutin, quercitrin and 2-tridecanone in diet had no effects on toxicities of methomyl and deltamethrin to larvae of cotton bollworms.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Chinese)
Database assignments for author(s): Xi-Wu Gao

Research topic(s) for pests/diseases/weeds:
control - general
pesticide resistance of pest

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Helicoverpa armigera