|Zhu, Yu Cheng|
Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: November 2, 2005
Publication Date: November 2, 2005
Citation: Zhu, Y., Snodgrass, G.L. 2005. Development of insecticide resistance in the tarnished plant bug. Meeting Abstract. The 52nd Conference Mississippi Entomological Association. Nov. 2-4, 2005 Technical Abstract: The tarnished plant bug, Lygus lineolaris, has become a serious pest because of the widespread adoption of Bt cotton and resistance development to synthetic insecticides. Previous reports indicated that the tarnished plant bug developed a metabolic resistance to permethrin and malathion through increased gene expression of a cytochrome P450 and an esterase. Glutathione S-transferase (GST) is another important metabolic enzyme for detoxification and resistance development to malathion. For the purpose of understanding the mechanisms and resistance management, we compared GST enzyme activity between susceptible and resistant strains and examined if the GST inhibitors synergized malathion toxicity through suppression of the GST activity. GST cDNA and genomic sequences and gene expression in both susceptible and resistant strains are discussed.