中国农业科学 ›› 2008, Vol. 41 ›› Issue (6): 1845-1850 .doi: 10.3864/j.issn.0578-1752.2008.06.036

• 研究简报 • 上一篇    下一篇

斯卑尔脱小麦α-醇溶蛋白基因克隆与序列分析

蒲至恩,龙 海,魏育明,颜泽洪,郑有良   

  1. 四川农业大学农学院
  • 收稿日期:2005-10-19 修回日期:2006-03-26 出版日期:2008-06-10 发布日期:2008-06-10
  • 通讯作者: 郑有良

Cloning and Sequence Analysis of α-Gliadin Genes from Spelt Wheat

  

  1. 四川农业大学农学院
  • Received:2005-10-19 Revised:2006-03-26 Online:2008-06-10 Published:2008-06-10

摘要: 【目的】进一步了解斯卑尔脱小麦(Triticum spelta L.)α-醇溶蛋白基因序列信息。【方法】根据已知的普通小麦α-醇溶蛋白基因序列设计引物,采用PCR方法,克隆基因并进行序列分析。【结果】从NGB5149中克隆得到两个α-醇溶蛋白基因序列Gli-Spelt-1和Gli-Spelt-2(GenBank登录号分别为DQ234066和DQ234067)。它们具有α-醇溶蛋白基因的典型结构特征,但Gli-Spelt-1是一个假基因。Spelt-Gli-2编码区全长849 bp,编码263个氨基酸。【结轮】氨基酸序列比较显示,Gli-Spelt-1和Gli-Spelt-2与已报道的α-醇溶蛋白序列有较高的一致性。

关键词: 斯卑尔脱小麦, α-醇溶蛋白基因, 基因克隆, 序列分析

Abstract: Specific PCR primer were designed based on the known α-gliadin gene sequences, and the coding regions of two gliadin genes Spelt-Gli-1 and Spelt-Gli-2 were isolated from spelt wheat (Triticum spelta L.), among which Spelt-Gli-1 was a pseudogene due to the stop codons in its coding region. The full coding region of Spelt-Gli-2 was 849bp, and could be translated into a protein of 263 amino acids. The two cloned gliadin genes had the typical structure of α-gliadin genes. The deduced amino acid sequences comparison suggested that Spelt-Gli-2 had a high degree of identity with the known a-gliadin genes.

Key words: spelt wheat, α-gliadin, gene cloning, sequences analysis