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园艺学报 ›› 2006, Vol. 33 ›› Issue (5): 1011-1014.

• 研究论文 • 上一篇    下一篇

部分蔬菜CMV分离物CP基因的克隆及序列分析

陈伟1, 2;罗静1, 2;庄木2*;李艳红1;冯兰香2;王晓武2;谢丙炎2;刘玉梅2;方智远2   

  1. (1 首都师范大学生命科学学院, 北京100037; 2 中国农业科学院蔬菜花卉研究所, 北京100081)
  • 收稿日期:2006-01-18 修回日期:2006-05-10 出版日期:2006-10-25 发布日期:2006-10-25

Cloning and Sequence Analysis of Coat Protein Genes of Cucumber mosaicvirus Isolated from Several Vegetable

Chen Wei1, 2;Luo Jing1, 2;Zhuang Mu2*;Li Yanhong1;Feng Lanxiang2;Wang Xiaowu2;Xie Bingyan2;Liu Yumei2;Fang Zhiyuan2   

  1. (1Capital Normal University, Life College, Beijing 100037, China; 2 Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China)
  • Received:2006-01-18 Revised:2006-05-10 Online:2006-10-25 Published:2006-10-25

摘要: 对来自国内不同地区、不同蔬菜作物上的8个黄瓜花叶病毒分离物, 采用一步法RT-PCR扩增得到CP基因全长片段, 分别克隆到pMD-18T载体并测序。结果表明, 本研究8个分离物的CP基因均为657个碱基, 可编码218个氨基酸, 它们之间的核苷酸序列同源性较高, 达92.8% ~99.1%; 将它们与GenBank中部分CMV CP基因序列比较, 显示出与CMV亚组Ⅰ株系的核苷酸序列同源性达90.7%~98.0%, 而与亚组Ⅱ株系的核苷酸序列同源性仅有75.8%~78.1%。因此, 这8个分离物应归属于CMV亚组Ⅰ。

关键词: 黄瓜花叶病毒, CP基因, RT-PCR, 序列分析

Abstract: The eight CP genes of CMV isolated from different areas and vegetables in China were amplified by one-step RT-PCR, and transformed into pMD-18T vector and then sequenced, respectively. The results showed that the sequences of the eight CP genes were all 657 nucleotides that could encode the protein of 218 amino acids of each isolate, and the isolates shared high sequence homology from 92.8% to 99.1% among them. The nucleotide sequence alignment showed, compared with some CP gene sequences of CMV reported in GenBank, the eight CP genes shared 90.7% - 98.0% homology with those of CMV subgroup I strains, whereas only shared 75.8% - 78.1% homology with those of CMV subgroup Ⅱ strains. Therefore, it was supposed that all the eight CMV isolates reported in this study belonged to the subgroup I of CMV.

Key words: Cucumber mosaic virus, CP Gene, RT-PCR, Sequence analysis