中国农业科学 ›› 2005, Vol. 38 ›› Issue (07): 1501-1504 .

• 研究简报 • 上一篇    

2个甜菜夜蛾信息素结合蛋白cDNA片段的克隆和序列分析

修伟明,董双林,苗 慧,穆兰芳   

  1. 南京农业大学农业部病虫监测与治理重点开放实验室
  • 收稿日期:2004-09-13 修回日期:1900-01-01 出版日期:2005-07-10 发布日期:2005-07-10
  • 通讯作者: 董双林

Molecular Cloning and Sequence Analysis of Two cDNA Fragments of Pheromone Binding Protein in Male Beet Armyworm, Spodoptera exigua Hübner

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  1. 南京农业大学农业部病虫监测与治理重点开放实验室
  • Received:2004-09-13 Revised:1900-01-01 Online:2005-07-10 Published:2005-07-10

摘要: 通过比较几种已发表夜蛾科昆虫的信息素结合蛋白(PBP)氨基酸序列,设计合成一对简并性引物, 利用反转录多聚酶链式反应(RT-PCR)技术从甜菜夜蛾(Spodoptera exigua Hübner)雄虫触角扩增得到2个分别为275 bp和281 bp的cDNA片段SexigPBP1和SexigPBP2,其分别由92个氨基酸残基和94个氨基酸残基组成。通过在GenBank中进行序列的同源性比较,表明这2个序列与已知几种昆虫的PBP氨基酸序列具较高同源性。

关键词: 甜菜夜蛾, 信息素结合蛋白基因, 序列分析

Abstract: By reverse transcription-polymerase chain reaction (RT-PCR) method with a pair of degenerate primers, two cDNA fragments of pheromone binding protein(PBP)gene, SexigPBP1 and SexigPBP2, were cloned and sequenced from the antennae of male Spodoptera exigua. SexigPBP1 and SexigPBP2 contained 275 bp and 281 bp, and with deduced amino acid sequences of 92 residues and 94 residues, respectively. The sequence analysis indicated that the deduced amino acid sequences of the cDNA fragments shared high identity with PBPs gene sequences from other previously reported insects.

Key words: Spodoptera exigua, Pheromone binding protein gene, Sequence analysis