浙江农业学报 ›› 2019, Vol. 31 ›› Issue (2): 173-181.DOI: 10.3969/j.issn.1004-1524.2019.02.01

• 作物科学 • 上一篇    下一篇

烟草质膜ATPase4基因的克隆、表达载体构建及表达分析

王静1, 2, 彭双1, 2, 胡圣1, 2, 卓维1, 2, 陈倩1, 2, 李立芹1, 2, *   

  1. 1.四川农业大学 农学院,四川 成都 611130;
    2.作物科学国家级实验教学示范中心,四川 成都 611130
  • 收稿日期:2018-03-19 出版日期:2019-02-25 发布日期:2019-03-06
  • 通讯作者: 李立芹,E-mail: liliqin88@163.com
  • 作者简介:王静(1994—),女,河南濮阳人,硕士研究生,主要从事植物分子生物学研究。E-mail: 1015229363@qq.com
  • 基金资助:
    植物生理学与生物化学国家重点实验室开放课题(SKLPPBKF 1505,SKLPPBKF 1506)

Cloning expression vector construction and expression analysis of tobacco ATPase4 gene

WANG Jing1, 2, PENG Shuang1, 2, HU Sheng1, 2, ZHUO Wei1, 2, CHEN Qian1, 2, LI Liqin1, 2, *   

  1. 1.College of Agronomy, Sichuan Agricultural University, Chengdu 611130, China;
    2. National Demonstration Center for Experimental Crop Science Education, Chengdu 611130, China
  • Received:2018-03-19 Online:2019-02-25 Published:2019-03-06

摘要: 植物细胞质膜ATPase基因表达可以引起细胞向外界环境释放H+,从而形成细胞膜内外的电化学式梯度,促进各种离子的运输,抵抗外界的各种胁迫。为研究ATPase基因在烟草中的非生物胁迫调控机制及相关生物学功能,本研究采用同源克隆的方法,从普通烟草K326中克隆到了1个ATPase4同源性基因,成功构建ATPase4-pcambia1300过表达载体。利用生物信息学分析ATPase4基因编码蛋白的疏水性、理化性质、蛋白结构预测、信号肽预测、磷酸位点预测及同源性分析,结果显示,该基因与绒毛状烟草(Nicotiana tomentosiformis)质膜ATPase4具有99%同源性,故命名为质膜ATPase4基因。利用荧光定量PCR(qRT-PCR)测定该基因在烟草组织中的表达量及其在非生物逆境胁迫中的表达模式,结果表明,该基因在根中表达量最高,且能快速响应低钾、高盐、PEG和冷胁迫诱导,说明ATPase4基因在烟草逆境胁迫中发挥着重要的调节作用。

关键词: 烟草, ATPase, 克隆, 表达

Abstract: Expression of cytoplasmic membrane ATPase gene in plants can cause cells to release H+ to the external environment, thus form the membrane inside and outside electrical chemical formula of the gradient, promote all sorts of ion transport, various stress resistance to the outside world. In order to study the regulatory mechanism of ATPase in tobacco and its related biological functions, this article adopted homologous cloning method to clone a ATPase4 homologous gene from common tobacco K326 and construct ATPase4-pcambia1300 overexpression vector. The bioinformatics software was used to predict the hydrophobic, physical and chemical properties, protein structure, signal peptide, phosphate site and origin of ATPase4. The homology analysis showed that the modified gene had 99% homology with plasma membrane ATPase4 of Nicotiana tomentosiformis, so it was named as plasma membrane ATPase4 gene. Fluorescence quantitative real time PCR (qRT-PCR) was used to determine the relative expression pattern in different tissues under different stresses. The results showed that the length of gene sequence was 2 982 bp, encoding 963 amino acid residues, the gene had the highest expression level in the roots, and it could respond quickly to low potassium, high salt, PEG and cold stress. It was shown that ATPase4 played an important regulatory role in tobacco stress.

Key words: tobacco, ATPase, cloning, expression

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