Reference Report

Reference
Citation	Chung, H., Bogwitz, M.R., McCart, C., Andrianopoulos, A., ffrench-Constant, R.H., Batterham, P., Daborn, P.J. (2007). Cis-regulatory elements in the Accord retrotransposon result in tissue-specific expression of the Drosophila melanogaster insecticide resistance gene Cyp6g1. Genetics 175(3): 1071--1077. (Export to RIS)
FlyBase ID	FBrf0200035
Publication Type	Research paper
PubMed ID	17179088
PubMed Abstract	Transposable elements are a major mutation source and powerful agents of adaptive change. Some transposable element insertions in genomes increase to a high frequency because of the selective advantage the mutant phenotype provides. Cyp6g1-mediated insecticide resistance in Drosophila melanogaster is due to the upregulation of the cytochrome P450 gene Cyp6g1, leading to the resistance to a variety of insecticide classes. The upregulation of Cyp6g1 is correlated with the presence of the long terminal repeat (LTR) of an Accord retrotransposon inserted 291bp upstream of the Cyp6g1 transcription start site. This resistant allele (DDT-R) is currently at a high frequency in D. melanogaster populations around the world. Here, we characterize the spatial expression of Cyp6g1 in insecticide-resistant and -susceptible strains. We show that the Accord LTR insertion is indeed the resistance-associated mutation and demonstrate that the Accord LTR carries regulatory sequences that increase the expression of Cyp6g1 in tissues important for detoxification, the midgut, Malpighian tubules, and the fat body. This study provides a significant example of how changes in tissue-specific gene expression caused by transposable-element insertions can contribute to adaptation.
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Secondary IDs	FBrf0195149
Language of Publication	English
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Publication Type	Journal
Abbreviation	Genetics
Title	Genetics
Publication Year	1916-
ISBN/ISSN	0016-6731
Data from Reference
Alleles (12)
	Avic\GFP^{Cyp6g1.-1197-0.T:nls-tra} Avic\GFP^{Cyp6g1.accordLTR.f.T:nls-tra} Avic\GFP^{Cyp6g1.accordLTR.hs.f.T:nls-tra} Avic\GFP^{Cyp6g1.accordLTR.hs.r.T:nls-tra} Avic\GFP^{Cyp6g1.accordLTR.r.T:nls-tra} Avic\GFP^{hs.Stinger.T:nls-tra} Avic\GFP^{Stinger.T:nls-tra} Cyp6g1^DDT-R Cyp6g1^Scer\UAS.cDa Scer\GAL4^Cyp6g1.Cs Scer\GAL4^Cyp6g1.HR w^+mW.hs
Constructs (8)
	P{Cyp6g1-accordLTR-GFP.HR.f} P{Cyp6g1-accordLTR-GFP.HR.r} P{Cyp6g1-accordLTR-hs-GFP.HR.f} P{Cyp6g1-accordLTR-hs-GFP.HR.r} P{Cyp6g1-GAL4.Cs} P{Cyp6g1-GAL4.HR} P{Cyp6g1-GFP.-1197-0} P{UAS-Cyp6g1.D}
Genes (5)
	Avic\GFP Cyp6g1 Scer\GAL4 T:nls-tra w
Insertions (2)
	accord{}Cyp6g1^DDT-R P{Cyp6g1-GAL4.HR}6c
Natural transposons (1)
	P-element