Cross-resistance study and biochemical mechanisms of thiamethoxam resistance in B-biotype Bemisia tabaci (Hemiptera: Aleyrodidae)

Pest Management Science
Yuntao FengYoujun Zhang

Abstract

B-biotype Bemisia tabaci (Gennadius) has invaded China over the past two decades. To understand the risks and to determine possible mechanisms of resistance to thiamethoxam in B. tabaci, a resistant strain was selected in the laboratory. Cross-resistance and the biochemical mechanisms of thiamethoxam resistance were investigated in the present study. A 66.3-fold thiamethoxam-resistant B. tabaci strain (TH-R) was established after selection for 36 generations. Compared with the susceptible strain (TH-S), the selected TH-R strain showed obvious cross-resistance to imidacloprid (47.3-fold), acetamiprid (35.8-fold), nitenpyram (9.99-fold), abamectin (5.33-fold) and carbosulfan (4.43-fold). No cross-resistance to fipronil, chlorpyrifos or deltamethrin was seen. Piperonyl butoxide (PBO) and triphenyl phosphate (TPP) exhibited significant synergism on thiamethoxam effects in the TH-R strain (3.14- and 2.37-fold respectively). However, diethyl maleate (DEM) did not act synergistically with thiamethoxam. Biochemical assays showed that cytochrome P450 monooxygenase activities increased 1.21- and 1.68-fold respectively, and carboxylesterase activity increased 2.96-fold in the TH-R strain. However, no difference was observed for glutathion...Continue Reading

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Citations

Nov 4, 2015·Annual Review of Entomology·Fang-Hao Wan, Nian-Wan Yang
Nov 19, 2015·Journal of Integrative Plant Biology·Floor van den Oever-van den ElsenBen Vosman
Jun 6, 2015·Pesticide Biochemistry and Physiology·Chris BassRalf Nauen
Sep 21, 2013·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Fang ZhangRongqing Li
Dec 22, 2014·Comparative Biochemistry and Physiology. Part D, Genomics & Proteomics·Yiou PanQingli Shang
Apr 17, 2018·Insect Molecular Biology·L GuoY Zhang
Mar 30, 2019·Journal of Economic Entomology·David G Riley, Rajagopalbabu Srinivasan
May 28, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Yankai LiZhaonong Hu
Dec 5, 2019·Journal of Economic Entomology·Fan WangKai Wang
Jul 11, 2021·International Journal of Biological Macromolecules·Tianhua DuYoujun Zhang

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