LSTM Home > LSTM Research > LSTM Online Archive

Cross-induction of detoxification genes by environmental xenobiotics and insecticides in the mosquito Aedes aegypti: Impact on larval tolerance to chemical insecticides

Poupardin, Rodolphe, Reynaud, S., Strode, Clare, Ranson, Hilary ORCID: https://orcid.org/0000-0003-2332-8247, Vontas, John and David, Jean-Philippe (2008) 'Cross-induction of detoxification genes by environmental xenobiotics and insecticides in the mosquito Aedes aegypti: Impact on larval tolerance to chemical insecticides'. Insect Biochemistry and Molecular Biology, Vol 38, Issue 5, pp. 540-551.

Full text not available from this repository.

Abstract

The effect of exposure of Aedes aegypti larvae to sub-lethal doses of the pyrethroid insecticide permethrin, the organophosphate temephos, the herbicide atrazine, the polycyclic aromatic hydrocarbon fluoranthene and the heavy metal copper on their subsequent tolerance to insecticides, detoxification enzyme activities and expression of detoxification genes was investigated. Bioassays revealed a moderate increase in larval tolerance to permethrin following exposure to fluoranthene and copper while larval tolerance to temephos increased moderately after exposure to atrazine, copper and permethrin. Cytochrome P450 monooxygenases activities were induced in larvae exposed to permethrin, fluoranthene and copper while glutathione S-transferase activities were induced after exposure to fluoranthene and repressed after exposure to copper. Microarray screening of the expression patterns of all detoxification genes following exposure to each xenobiotic with the Aedes Detox Chip identified multiple genes induced by xenobiotics and insecticides. Further expression studies using real-time quantitative PCR confirmed the induction of multiple CYP genes and one carboxylesterase gene by insecticides and xenobiotics. Overall, this study reveals the potential of xenobiotics found in polluted mosquito breeding sites to affect their tolerance to insecticides, possibly through the cross-induction of particular detoxification genes. Molecular mechanisms involved and impact on mosquito control strategies are discussed. (C) 2008 Elsevier Ltd. All rights reserved.

Item Type: Article
Uncontrolled Keywords: mosquitoes aedes aegypti induction resistance insecticides xenobiotics detoxification cytochrome p450 monooxygenases glutathione s-transferases carboxylesterases glutathione s-transferases drosophila-melanogaster cytochrome-p450 monooxygenases anopheles-gambiae aryl-hydrocarbon helicoverpa-zea resistance expression metabolism cyp6b1
Subjects: WA Public Health > Preventive Medicine > WA 110 Prevention and control of communicable diseases. Transmission of infectious diseases
WA Public Health > Preventive Medicine > WA 240 Disinfection. Disinfestation. Pesticides (including diseases caused by)
QX Parasitology > Insects. Other Parasites > QX 600 Insect control. Tick control
QX Parasitology > Insects. Other Parasites > QX 510 Mosquitoes
QU Biochemistry > Genetics > QU 475 Genetic processes
QX Parasitology > Insects. Other Parasites > QX 525 Aedes
Faculty: Department: Groups (2002 - 2012) > Vector Group
Digital Object Identifer (DOI): https://doi.org/10.1016/j.ibmb.2008.01.004
Depositing User: Users 183 not found.
Date Deposited: 05 Jul 2010 10:21
Last Modified: 06 Feb 2018 13:00
URI: http://archive.lstmed.ac.uk/id/eprint/897

Statistics

View details

Actions (login required)

Edit Item Edit Item