欢迎访问《草业学报》官方网站,今天是 分享到:

草业学报 ›› 2014, Vol. 23 ›› Issue (2): 207-214.DOI: 10.11686/cyxb20140225

• 研究论文 • 上一篇    下一篇

星星草PtGAPDH基因的克隆与表达分析

张旸1,郭海俊1,刘龙飚2,王卅1,梁颖1,聂玉哲1,李玉花1*   

  1. 1.东北林业大学生命科学学院,黑龙江 哈尔滨 150040;
    2.中国石油天然气管道工程有限公司天津设计院,天津 300457
  • 收稿日期:2013-08-22 出版日期:2014-02-25 发布日期:2014-04-20
  • 通讯作者: E-mail:lyhshen@126.com
  • 作者简介:张旸(1977-),女,黑龙江哈尔滨人,副教授,博士。E-mail:summerzhang@126.com
  • 基金资助:
    “十二五”农村领域国家科技计划课题(2013AA102706)和东北林业大学中央高校基本科研业务费专项资金项目(DL12BA08)资助。

Cloning and expression of PtGAPDH from Puccinellia tenuiflora

ZHANG Yang1, GUO Hai-jun1, LIU Long-biao2, WANG Sa1, LIANG Ying1, NIE Yu-zhe1, LI Yu-hua1   

  1. 1.College of Life Sciences, Northeast Forestry University, Harbin 150040, China;
    2.China Petroleum Pipeline Engineering Corporation Tianjin Design Institute, Tianjin 300457, China
  • Received:2013-08-22 Online:2014-02-25 Published:2014-04-20

摘要: 本试验利用RACE(rapid amplification of cDNA ends)克隆技术从星星草中克隆得到抗盐碱相关基因甘油醛-3-磷酸脱氢酶(GAPDH)的cDNA全长序列,其GeneBank登录号为JX411954。PtGAPDH基因开放阅读框为1014 bp,编码337个氨基酸。该氨基酸序列与高羊茅、大麦、小麦、水稻等禾本科作物具有较高的序列相似性。系统进化分析表明,PtGAPDH基因编码蛋白与单子叶植物的GAPDH具有较近的亲缘关系。Northern杂交分析显示,在一定盐碱胁迫条件下,随着处理试剂Na2CO3溶液浓度的增加,PtGAPDH基因在盐碱胁迫下的叶片和根部表达量都显著升高;超过最大耐受量后,PtGAPDH基因表达丰度逐渐降低。PtGAPDH基因的表达模式代表了星星草在盐碱胁迫下其自身的生理生化变化对分子水平上的基因表达丰度产生的影响趋势。

Abstract: A full length cDNA named PtGAPDH related to saline-alkali tolerance was cloned from Puccinellia tenuiflora by RT-PCR and RACE (rapid amplification of cDNA ends). PtGAPDH gene with 1014 bp open reading frame encoded a protein with a predicted length of 337 amino acids. Phylogenetic analysis indicates that this gene, denoted PtGAPDH, has sequence characteristics similar to other monocotyledon GAPDH genes. Northern blot shows the expression of PtGAPDH has increased with the growth of the concentration of Na2CO3 in the proper realm, otherwise, has decreased both in leaves and roots. The expression pattern of PtGAPDH gene stands for the regular effects of the saline-alkali stress on the gene expression of P. tenuiflora on the molecular standard.

中图分类号: