›› 2004, Vol. 47 ›› Issue (4): 526-529.

• 研究论文 • 上一篇    下一篇

小菜蛾对溴氰菊酯抗性相关的DNA片段的克隆与分析

程罗根1, 陈之浩2, 张晓飞1, 李忠英2   

  1. 1.南京师范大学生命科学学院,南京 210097; 2.贵州省农业科学院植物保护研究所,贵阳 550006

  • 出版日期:2004-08-20 发布日期:2004-08-20

Cloning and analysis of DNA sequences related to deltamethrin resistance in the diamondback moth, Plutella xylostella (L.)

CHENG Luo-Gen1, CHEN Zhi-Hao2, ZHANG Xiao-Fei1, LI Zhong-Ying2   

  1. (1. College of Life Sciences, Nanjing Normal University, Nanjing 210097, China; 2. Institute of Plant Protection, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China)

  • Online:2004-08-20 Published:2004-08-20

摘要: 采用代表性差异分析(representational difference analysis, RDA )方法,以小菜蛾Plutella xylostella (L.)的敏感品系作为对照组,溴氰菊酯抗性近等基因系(near isogenic line)作为测试组,通过三轮消减杂交得到大小为 150~300 bp的差异扩增带,经亚克隆测序并与GenBank等数据库同源比较,发现差异片段与已知抗性相关基因无同源性;以随机选取的差异片段作探针进行Southern blot分析,在测试组扩增子和三轮差异产物中都获得了阳性结果,而在对照组扩增子中的结果是阴性的。这些结果表明测序片段可能是与抗性相关的新基因序列或调控序列。

关键词: 小菜蛾, 溴氰菊酯, 抗药性, 代表性差异分析法; DNA测序

Abstract: Using representational difference analysis (RDA) technique,the genomic difference between the susceptible strain and the deltamethrin resistance near isogenic line of the diamondback moth, Plutella xylostella (L.) was preliminarily analyzed. In RDA system, the driver amplicon is from the susceptible strain while the tester amplicon from the deltamethrin resistance near isogenic line strain. After three rounds of subtractive hybridization, the differential amplification products were obtained and their sizes were about 150-300 bp. Comparisons between our sub-clone sequencing results and those recorded in GenBank show that these products have partial gene homology with Homo sapiens, bronchitis virus and so on, but show no homology to any known resistant gene. Preliminary judgment revealed that these segments might be new gene sequences or controlling gene sequences.

Key words: Plutella xylostella, deltamethrin, resistance, representational difference analysis (RDA), DNA sequencing