华北农学报 ›› 2014, Vol. 29 ›› Issue (4): 19-24. doi: 10.7668/hbnxb.2014.04.004

所属专题: 小麦 抗旱节水 生物技术

• 论文 • 上一篇    下一篇

小麦渗透胁迫诱导基因TaMYBSM151的克隆与分析

李孟军, 史占良, 郭进考   

  1. 石家庄市农林科学研究院, 河北省小麦工程技术研究中心, 河北 石家庄 050041
  • 收稿日期:2014-05-05 出版日期:2014-08-28
  • 通讯作者: 郭进考(1951-),男,河北新乐人,研究员,主要从事小麦遗传育种研究。
  • 作者简介:李孟军(1972-),男,河北玉田人,副研究员,博士,主要从事作物分子生物学研究。
  • 基金资助:
    河北省巨人计划创新团队项目;石家庄市科技支撑计划项目(12149402A);十二五国家科技支撑计划项目(2011BAD35B03)

Cloning and Analysis of Osmotic-stress Induced Gene TaMYBSM151 from Common Wheat

LI Meng-jun, SHI Zhan-liang, GUO Jin-kao   

  1. Shijiazhuang Academy of Agriculture and Forestry Sciences, Wheat Engineering Research Center of Hebei Province, Shijiazhuang 050041, China
  • Received:2014-05-05 Published:2014-08-28

摘要: 为了探讨转录因子在小麦抗旱分子机制中的作用,利用Affymetrix小麦表达谱芯片对渗透胁迫下普通小麦(石麦15)根系和叶片诱导表达谱进行了分析。在表达谱芯片上筛选到1个渗透胁迫诱导表达的MYB转录因子EST序列(GenBank 登录号:BJ264503)。根据该EST序列设计引物筛选石麦15基因组BAC文库,获得1个含有该EST序列的BAC单克隆。以BAC单克隆质粒为模板,通过BAC测序克隆了小麦MYB转录因子基因(TaMYBSM151)及其5'侧翼序列。 TaMYBSM151 的开放读码框长936 bp,编码1个含有311个氨基酸的R1-MYB转录因子。 TaMYBSM151 基因包含3个外显子和2个内含子。在 TaMYBSM151 5' 侧翼序列中,预测出33个脱水响应相关的顺式作用元件。实时定量PCR结果表明,TaMYBSM151 受渗透胁迫诱导表达,但在根和叶中表达模式完全不同。以上结果表明,TaMYBSM151 可能为脱水响应基因。

关键词: 小麦, MYB转录因子, 渗透胁迫诱导基因

Abstract: In order to determine the role of transcriptional factors in drought-resistant molecular mechanism of common wheat,Affymetrix GeneChip Wheat Genome Array was used to analyze the expression-profile of common wheat(Shimai 15)root and leaf under osmotic stress.An osmotic-stress induced EST sequence was identified(GenBank accession No.BJ264503)in the expression-profile chip.One BAC clone was isolated from Shimai 15 genome BAC library using primer pairs designed based on EST-BJ264503 sequence.The MYB transcriptional factor gene(TaMYBSM151)and its 5'-flanking sequence were cloned by sequencing walking using BAC clone plasmid as template.The open reading frame of TaMYBSM151 is 936 bp long coding for a putative 311-amino-acid R1-MYB transcriptional factor. TaMYBSM151 contained three exons and two introns.In 5'-flanking sequence of TaMYBSM151,33 dehydration-response cis-elements were predicted.Real-time RT-PCR revealed that the expression of TaMYBSM151 was induced by osmotic stress,but showed different expression patterns.The results above indicated TaMYBSM151 may be a dehydration-response gene.

Key words: Triticum aestivum L., MYB transcriptional factor, Osmotic-stress induced gene

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引用本文

李孟军, 史占良, 郭进考. 小麦渗透胁迫诱导基因TaMYBSM151的克隆与分析[J]. 华北农学报, 2014, 29(4): 19-24. doi: 10.7668/hbnxb.2014.04.004.

LI Meng-jun, SHI Zhan-liang, GUO Jin-kao. Cloning and Analysis of Osmotic-stress Induced Gene TaMYBSM151 from Common Wheat[J]. journal1, 2014, 29(4): 19-24. doi: 10.7668/hbnxb.2014.04.004.

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