中国媒介生物学及控制杂志

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大肠埃希菌表达苏云金杆菌cryIVD基因杀蚊幼活性观察

刘相萍;张昕;阎歌;甄天民;孙传红;王新国;黄炳成   

  1. 山东省寄生虫病防治研究所 济宁272033
  • 出版日期:2002-10-20 发布日期:2002-10-20

Observation on Larvicidal Activity Against Mosquitoes with B.t.i cryIVD Protein Expressed in E.coli DH5α

LIU Xiang-ping; ZHANG Xin; YAN Ge; et al   

  1. Shandong Institute of Parasitic Diseases, Jining 272033, China
  • Online:2002-10-20 Published:2002-10-20

摘要: 目的:观察表达B.t.icryIVD基因的大肠埃希菌对蚊幼虫的毒效。方法:细菌的诱导表达及蚊虫毒效测试。结果:加入工程菌48h对淡色库蚊和白纹伊蚊均具有明显的杀灭作用,LC50分别为2.38×106、1.6×107个/ml细胞,其中对淡色库蚊的杀灭作用要好于对白纹伊蚊幼虫的杀灭效果。结论:单独表达B.t.icryIVD基因具有杀蚊作用。

关键词: 苏云金杆菌, cryIVD, 基因表达, 大肠杆菌, 杀蚊活性

Abstract: Objective:To observe the larvicidal activity against mosquitoes with B.t.I cryIVD protein expressed in E.coli.Methods:Induced by IPTG and detection of larvicidal activity.Results:The engineered E.coli had larvicidal activity againstCulex pipiens pallens and Ae.albopictus.Conclusion:The B.t.I cryIVD protein expressed in E.coli DH5 α alone showed larvicidal activity against mosquitoes.