中国农业科学 ›› 2006, Vol. 39 ›› Issue (9): 1736-1742 .

• 作物遗传育种·种质资源 • 上一篇    下一篇

利用cDNA-AFLP技术分离与小麦耐盐性相关的 cDNA片段及基因的可行性研究

秘彩莉 张学勇 刘旭   

  1. 中国农业科学院作物科学研究所 农科院品资所 中国农业科学院
  • 收稿日期:2005-03-22 修回日期:2005-06-22 出版日期:2006-09-10 发布日期:2006-09-10
  • 通讯作者: 刘旭

Isolation of cDNA fragments and genes related to wheat salt-tolerance via cDNA-AFLP

  

  1. 中国农业科学院作物科学研究所 农科院品资所 中国农业科学院
  • Received:2005-03-22 Revised:2005-06-22 Online:2006-09-10 Published:2006-09-10

摘要: 利用cDNA-AFLP技术分析了耐盐性受主效基因控制的小麦品系98-160盐胁迫前后基因表达的变化。对112个克隆的cDNA片断进行了tBlastx分析,约有65.2%的基因与已知基因有较高的同源性,从中筛选出18个与小麦耐盐性密切相关的片段,主要包括转录因子、与离子转运有关的蛋白、信号传导相关蛋白、胁迫相关蛋白以及与蛋白-蛋白相互作用有关的蛋白。目前已得到部分序列的全长cDNA,RT-PCR结果表明一些基因与耐盐性密切相关。

关键词: 小麦, 耐盐性, cDNA-AFLP

Abstract: 98-160 is a wheat line with excellent salt-tolerance which is controlled by major genes. The expression profile of 98-160 under salt stress for different times was studied using cDNA-AFLP. One hundred and twelve fragments were cloned and sequenced. The tBlastx analysis showed that 62.5% of the sequenced fragments had similarity with known genes in the database, in which 18 cDNA were tightly related to wheat salt tolerance, most of them were transcription factor, transportation related protein, signal transduction related protein and proteins related to other stresses. Some fragments encoded proteins involved in protein-protein interaction.Several full length cDNAs have been obtained based on the above fragments, expression analysis by RT-PCR indicated that they might play important roles in reaction to wheat salt stress.

Key words: wheat salt tolerance cDNA-AFLP