Cloning and sequence analysis of ATP synthase B subunit gene and its association with deltamethrin resistance in<em> Culex pipiens pallens</em> (Diptera: Culicidae)
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ACTA ENTOMOLOGICA SINICA  2017, Vol. 60 Issue (8): 900-905    DOI: 10.16380/j.kcxb.2017.08.006
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Cloning and sequence analysis of ATP synthase B subunit gene and its association with deltamethrin resistance in Culex pipiens pallens (Diptera: Culicidae)
WANG Wei-Jie1,2,*, LIU Xin-Ying3, FANG Fu-Jin2,4, GUO Qin2, WANG He1, QI Li-Li1, ZHAO Wen-Ai
 (1. Department of Pathogen Biology, Hebei Medical University, Shijiazhuang 050017, China; 2. Department of Pathogen Biology, Nanjing Medical University, Nanjing 211166, China; 3. Department of Hematology and Nephrology, Second Central Hospital of Baoding City, Zhuozhou, Hebei 072750, China; 4. Department of Clinical Laboratory, the Third People’s Hospital of Bengbu, Bengbu, Anhui 233000, China)
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Abstract 【Aim】 This study aims to clone the coding sequence of ATP synthase B subunit gene, to perform bioinformatics analysis for the coding sequence and to characterize its association with deltamethrin resistance in Culex pipiens pallens. 【Methods】 The coding sequence of ATP synthase B subunit gene in C. pipiens pallens was amplified by PCR method. The physical-chemical properties and functional characteristics of the encoded protein were predicted by employing the web-based bioinformatics analysis. The expression of ATP synthase B subunit gene was compared between the deltamethrin-susceptible and-resistant strains selected in the laboratory by quantitative real-time PCR method, and between the deltamethrin-susceptible and -resistant individuals of the field populations for further verification. 【Results】 The coding sequence of ATP synthase B subunit gene (GenBank accession no.: KY783434) was cloned, which contains 717 nucleotides encoding 238 amino acids. Bioinformatics analysis showed that its encoded protein has a theoretical relative molecular weight of 26.96 kD and the isoelectric point value of 8.97 approximately. It was predicted that ATP synthase B subunit contains a structural domain (amino acids 70-231) of ATP-synthase_B, but lacks signal peptide and transmembrane domain. Quantitative real-time PCR results revealed that the expression level of ATP synthase B subunit gene was up-regulated in the deltamethrin-resistant strain as compared with that in the deltamethrin-susceptible strain selected in the laboratory, and also in the deltamethrin-resistant individuals of the field populations as compared with that in the deltamethrin-susceptible individuals of the field populations. 【Conclusion】 This study obtained the coding sequence of ATP synthase B subunit gene, performed bioinformatics analysis for the sequence, and confirmed its overexpression in the deltamethrin-resistant individuals, providing the basis for further studying its roles in insecticide resistance.
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WANG Wei-Jie
LIU Xin-Ying
FANG Fu-Jin
GUO Qin
WANG He
QI Li-Li
ZHAO Wen-Ai
Key wordsCulex pipiens pallens   ATP synthase B subunit   insecticide resistance   deltamethrin   bioinformatics     
Cite this article:   
WANG Wei-Jie,LIU Xin-Ying,FANG Fu-Jin et al. Cloning and sequence analysis of ATP synthase B subunit gene and its association with deltamethrin resistance in Culex pipiens pallens (Diptera: Culicidae)[J]. ACTA ENTOMOLOGICA SINICA, 2017, 60(8): 900-905.
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http://www.insect.org.cn/EN/10.16380/j.kcxb.2017.08.006      or     http://www.insect.org.cn/EN/Y2017/V60/I8/900
 
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