Effect of Treatment With 3-Octylthio-1,1,1-Trifluoropropan-2-One in the Diamondback Moth (Lepidoptera: Plutellidae) to the Toxicity of Diafenthiuron, Indoxacarb, and Bacillus thuringiensis
- 16 March 2020
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Economic Entomology
- Vol. 113 (3), 1419-1425
- https://doi.org/10.1093/jee/toaa041
Abstract
The diamondback moth, Plutella xylostella (L.), is a worldwide insect pest of cruciferous crops. Although insecticides have long been used for its control, diamondback moth rapidly evolves resistance to almost any insecticide. In insects, juvenile hormone (JH) is critically involved in almost all biological processes. The correct activity of JH depends on the precise regulation of its titer, and juvenile hormone esterase (JHE) is the key regulator. Thus, JH and JHE have become important targets for new insecticide development. Trifluoromethyl ketones are specific JHE inhibitors, among which 3-octylthio-1,1,1-trifluoropropan-2-one (OTFP) has the highest activity. The interaction effects between pretreatment with or combination of OTFP and the insecticides diafenthiuron, indoxacarb, and Bacillus thuringiensis (Bt) were investigated in diamondback moth larvae to determine OTFP’s potential as an insecticide synergist. In third-instar larvae, both pretreatment and combination treatment with OTFP decreased or antagonized the toxicities of diafenthiuron, indoxacarb, and Bt at all set concentrations. In fourth-instar larvae, combination treatment with OTFP decreased or antagonized the toxicities of diafenthiuron and indoxacarb at all set concentrations. However, it increased or synergized the toxicity of Bt at lower concentrations despite the limited effect at higher concentrations. Our results indicated that the effect of OTFP on the toxicities of insecticides varied with the type and concentration, larval stage, and treatment method. These findings contribute to the better use of OTFP in diamondback moth control.Keywords
Funding Information
- National Natural Science Foundation of China (31240090)
- Development Foundation of Science and Technology of Fujian Agriculture and Forestry University (KFA17140A, KFA 17382A, KF2015062, 31701806)
- Natural Science Foundation of Fujian Province (2014J01087)
- Special Fund Business of Fujian Province (2017R1025-8)
This publication has 44 references indexed in Scilit:
- Biochemical mechanisms and molecular analysis of fenvalerate resistant population of Spodoptera litura (Fabricius)Crop Protection, 2019
- Association of detoxification enzymes with butene-fipronil in larvae and adults of Drosophila melanogasterEnvironmental Science and Pollution Research, 2018
- Transcriptome-based identification and characterization of genes commonly responding to five different insecticides in the diamondback moth, Plutella xylostellaPesticide Biochemistry and Physiology, 2018
- Modulation of Juvenile Hormone Esterase Gene Expression Against Development ofPlutella xylostella(Lepidoptera: Plutellidae)Journal of Economic Entomology, 2016
- Diamondback Moth Ecology and Management: Problems, Progress, and ProspectsAnnual Review of Entomology, 2013
- Identification and characterization of juvenile hormone esterase gene from the yellow fever mosquito, Aedes aegyptiInsect Biochemistry and Molecular Biology, 2007
- Pheromone-triggered Orientation Flight of Male Moths can be Disrupted by Trifluoromethyl KetonesChemical Senses, 1999
- Insecticide resistance in Plutella xylostella (L.) (Lepidoptera: Yponomeutidae) in the Federal District, BrazilAnais da Sociedade Entomológica do Brasil, 1997
- Characterisation of juvenile hormone esterase in Drosophila melanogasterInsect Biochemistry and Molecular Biology, 1992
- Kinetic properties of the inhibition of juvenile hormone esterase by two trifluoromethylketones and O-ethyl,S-phenyl phosphoramidothioatePesticide Biochemistry and Physiology, 1984