The knockdown resistance (kdr) mutation in pyrethroid-resistant German cockroaches

被引:57
作者
Dong, K [1 ]
Valles, SM
Scharf, ME
Zeichner, B
Bennett, GW
机构
[1] Michigan State Univ, Dept Entomol, Pesticide Res Ctr, E Lansing, MI 48824 USA
[2] ARS, USDA, Ctr Med Agr & Vet Entomol, Gainesville, FL 32608 USA
[3] Purdue Univ, Dept Entomol, Ctr Urban & Ind Pest Management, W Lafayette, IN 47907 USA
[4] USA, Ctr Hlth Promot & Prevent Med, Aberdeen Proving Ground, MD 21010 USA
基金
美国国家科学基金会;
关键词
D O I
10.1006/pest.1998.2339
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
A point mutation in the para-homologous sodium channel gene has been shown to be associated with knockdown resistance (kdr) in several insect species including the German cockroach. In this study, we analyzed the genomic organization of the region where the kdr mutation resides and then performed polymerase chain reaction (PCR) and sequencing using genomic DNA as the template to detect kdr mutation in 24 pyrethroid-resistant German cockroach strains, most of which have been collected recently from the field. The kdr mutation, G to C at nt 2979 resulting in a leucine to phenylalanine amino acid substitution, was detected in 20 strains including 2 strains from overseas (China and Germany). Our results clearly indicate that the kdr mutation is widespread in German cockroach populations. However, the super-kdr mutation detected in super-kdr house flies was not found in any of the 4 strains that showed higher levels of knockdown resistance. Little correlation was observed between the presence of the kdr mutation and the level of knockdown resistance, suggesting the existence of multiple resistance mechanisms in many of these strains, (C) 1998 Academic Press.
引用
收藏
页码:195 / 204
页数:10
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