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植物研究 ›› 2012, Vol. 32 ›› Issue (5): 578-583.doi: 10.7525/j.issn.1673-5102.2012.05.013

• 论文 • 上一篇    下一篇

油菜BnMKK2基因的克隆及表达分析

张腾国1;王圆圆1;王娟1;王宁1;张艳1;孙万仓2;陈琼琼1;夏惠娟3   

  1. 1.西北师范大学生命科学学院,兰州 730070;2.甘肃农业大学农学院,兰州 730070;3.兰州市第十二中学,兰州 730000
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2012-09-20 发布日期:2012-09-20
  • 基金资助:
     

Cloning and Real-time Expression Analysis of a Novel MAPK Kinase Gene nMKK2 in Brassica napus

ZHANG Teng-Guo;WANG Yuan-Yuan;WANG Juan;WANG Ning;ZHANG Yan;SUN Wan-Cang;CHEN Qiong-Qiong;XIA Hui-Juan   

  1. 1.School of Life Science,Northwest Normal University,Lanzhou 730070;2.College of Agronomy,Gansu Agricultural University,Lanzhou 730070;3.Lanzhou No.12 Middle School,Lanzhou 730000
  • Received:1900-01-01 Revised:1900-01-01 Online:2012-09-20 Published:2012-09-20
  • Supported by:
     

摘要: 通过实验从陇油6号油菜中克隆得到了一种新的MAPK激酶基因BnMKK2基因的cDNA,全长1 344 bp,其中包括5′非翻译区(5′UTR)111 bp,3′非翻译区(3′UTR)165 bp,开放阅读框(ORF)长1 068 bp,编码355个氨基酸,该基因编码的蛋白质分子量为39.3 kDa,理论等电点为6.8。与拟南芥AtMKK2有很高的同源性,因此命名为BnMKK2(GenBank登录号:HQ848661)。该基因实时荧光定量PCR分析表明,BnMKK2基因的表达受低温胁迫诱导。

关键词: 陇油6号, 基因克隆, BnMKK2基因, 表达分析

Abstract: A new MAPKK cDNA BnMKK2 was isolated from Brassica napus Longyou 6. The cloned full-length cDNA was 1 344 bp, contained a 5′ untranslated region (5′UTR) of 111 bp, a 3′ untranslated region (3′UTR) of 165 bp, and a 1 068 bp ORF. BnMKK2 encoded a protein of 355 amino acids with a deduced molecular weight of about 39.3 kDa and with a PI of 6.8. The BnMKK2 exhibited closest homology to the Arabidopsis thaliana AtMKK2, so it was named BnMKK2(GenBank accession: HQ848661). Sequence Analysis indicated that the BnMKK2 protein exhibited closest homology to MAPKK, which is responsed to cold stress, and BnMKK2 played an important role in defending cold stress. Analysis by real-time RT-PCR indicated that the expression of BnMKK2 was increased in response to cold stress.

Key words: Longyou 6, Gene cloning, BnMKK2 gene, expression analysis

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