生物技术通报 ›› 2015, Vol. 31 ›› Issue (10): 119-124.doi: 10.13560/j.cnki.biotech.bull.1985.2015.10.020

• 研究报告 • 上一篇    下一篇

无苞芥锌指蛋白基因OpZFP提高烟草耐盐性的研究

王崎崎,郭丹丽,吴晓庆,费春艳,黄先忠   

  1. 石河子大学生命科学学院 农业生物技术重点实验室, 石河子 832003
  • 收稿日期:2014-12-01 出版日期:2015-10-28 发布日期:2015-10-28
  • 作者简介:王崎崎, 男, 研究方向:植物遗传与基因组学; E-mail:1378717616@qq.com
  • 基金资助:
    国家自然科学基金项目(U1303302), 国家大学生创新性项目(201410759017)

A Study on OpZFP Increasing Salt Tolerance of Nicotiana tabacum

Wang Qiqi, Guo Danli, Wu Xiaoqing, Fei Chunyan, Huang Xianzhong   

  1. Key Laboratory of Agrobiotechnology, College of Life Sciences, Shihezi University, Shihezi 832003
  • Received:2014-12-01 Published:2015-10-28 Online:2015-10-28

摘要: 旨在研究C2H2型锌指蛋白在植物生长发育、非生物胁迫信号转导过程中的作用。前期从新疆无苞芥中克隆的一个单锌指基因OpZFP, 利用叶盘法将OpZFP基因转入普通烟草中。半定量RT-PCR表明, 在转基因植株中OpZFP基因能够高效表达。烟草耐盐性分析显示, 在高盐胁迫下, 转基因植株的根长要长于野生型植株, 且转基因烟草丙二醛(MDA)的含量要明显低于野生型植株; 并且高盐胁迫处理, 野生型烟草离体叶片叶绿素降解率高于转基因植株。这些结果表明, 过量表达OpZFP的转基因植株可以提高植物对盐胁迫的抗性。

关键词: 无苞芥, 锌指蛋白, 耐盐, 烟草

Abstract: To research the role of C2H2 zinc finger protein in signal transduction under abiotic stresses and the developmental processes of plant, an OpZFP was cloned from Olimarabidopsis pumila in Xinjiang. An OpZFP was the single C2H2 gene cloned from Olimarabidopsis pumila in Xinjiang. Analysis of semi-quantitative RT-PCR indicated that OpZFP was successfully expressed in the transgenic tobacco. Interestingly, the overexpressed transgenic plants showed more tolerance to salt stress compared with the wild plants. Under high salt stress, the root lengths of transgenic plants were longer, and they contained lower MDA contents than the wild type. Further experiments revealed that the transgenic plants had a lower degree of bleaching than the wide type ones. These results indicated that the OpZFP-overexpressing transgenic plants could enhance plant resistance to salt stress.

Key words: Olimarabidopsis pumila, zinc finger protein, salt tolerance, Nicotiana tabacum