欢迎访问《中国农学通报》,

中国农学通报 ›› 2013, Vol. 29 ›› Issue (15): 149-156.doi: 10.11924/j.issn.1000-6850.2012-2837

所属专题: 生物技术

• 生物技术科学 • 上一篇    下一篇

长穗偃麦草EeDREB2基因的克隆与生物信息学分析

孙珊珊 杨涛 赵昌平 唐益苗 高世庆 柳珊 陈京瑞   

  • 收稿日期:2012-08-16 修回日期:2012-09-12 出版日期:2013-05-25 发布日期:2013-05-25
  • 基金资助:
    国家抗逆转基因重大专项

Identification and Bioinformatics Analysis of the EeDREB2 in Elytrigia elongate

  • Received:2012-08-16 Revised:2012-09-12 Online:2013-05-25 Published:2013-05-25

摘要: 为了进一步研究EeDREB2基因的结构和功能特点并为转基因小麦挖掘有效的候选基因,应用同源克隆的方法从长穗偃麦草中克隆出EeDREB2基因,通过生物信息学的手段对EeDREB2基因进行初步的分子特征分析。结果显示,该基因全长1035 bp,编码344个氨基酸,理论上的等电点为4.85,分子量为37485.49 Da,属于亲水性蛋白,有20个磷酸化位点。亚细胞定位预测显示EeDREB2基因定位在细胞核中,表达谱分析预测表明EeDREB2在根、茎、叶、花、种子中都表达,其中叶中表达量最高。同源性分析发现,EeDREB2与TaDREB4B同源性最高。EeDREB2基因的克隆为转基因小麦的抗逆性研究提供了有效资源。

关键词: 研究进展, 研究进展

Abstract: In order to reveal the structure and functional characteristics of EeDREB2, and provide important candidate genes for transgenic wheat, the cDNA of EeDREB2 was cloned in Elytrigia elongate. The results showed that the cDNA of EeDREB2 was 1035 bp and encoded 344 amino acids, encoding a hydrophilic amino acid with 20 phosphorylation site. The iso-electric point and the molecular weight was 4.85 and 37485.49 Da. Subcellular localization predicted EeDREB2 gene located in the nucleus. Gene expression profile analysis found that EeDREB2 gene expressed in roots, stem, leaf, flowers, seeds, and was more highly expressed in leaf. The homology analysis showed that EeDREB2 shared high homology to TaDREB4B. The cloning of the EeDREB2 gene provided effective resources to resistance research of transgenic wheat.