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植物研究 ›› 2022, Vol. 42 ›› Issue (6): 1005-1013.doi: 10.7525/j.issn.1673-5102.2022.06.010

• 分子生物学 • 上一篇    下一篇

PtrWRKY51基因的克隆及抗旱表达特性分析

黄安瀛1,2, 夏德安3, 张洋3, 那冬晨4, 燕青4, 魏志刚1()   

  1. 1.国家林业和草原局盐碱地研究中心,北京 100091
    2.国家林业和草原局桉树研究开发中心,湛江 524022
    3.东北林业大学林木遗传育种国家重点实验室,哈尔滨 150040
    4.山西师范大学生命科学学院,临汾 041000
  • 收稿日期:2021-10-20 出版日期:2022-11-20 发布日期:2022-11-22
  • 通讯作者: 魏志刚 E-mail:zhigangwei1973@163.com
  • 作者简介:黄安瀛(1992—),女,硕士研究生,主要从事林木遗传育种研究。
  • 基金资助:
    中央级公益性科研院所基本科研业务费专项资金(CAFYBB2020ZA005);国家自然科学基金(31770640)

Cloning and Drought Tolerance Expression Analysis of PtrWRKY51 Gene in Populus trichocarpa

Anying HUANG1,2, Dean XIA3, Yang ZHANG3, Dongchen NA4, Qing YAN4, Zhigang WEI1()   

  1. 1.Research Center for Saline-alkali Land,National Forestry and Grassland Administration,Beijing 100091
    2.China Eucalypt Research Centre,Chinese Academy of Forestry(CAF),Zhanjiang 524022
    3.State Key Laboratory of Tree Genetics and Breeding,Northeast Forestry University,Harbin 150040
    4.College of Life Science,Shanxi Normal University,Linfen 041000
  • Received:2021-10-20 Online:2022-11-20 Published:2022-11-22
  • Contact: Zhigang WEI E-mail:zhigangwei1973@163.com
  • About author:Huang Anying(1992—),female,master,mainly engaged in forest tree genetics and breeding research.
  • Supported by:
    Fundamental Research Funds of Chinese Academy of Forestry(CAFYBB2020ZA005);National Natural Science Foundation of China(31770640)

摘要:

为明确毛果杨WRKY家族成员PtrWRKY51基因功能,以Nisqually-1株系毛果杨为模板,克隆得到PtrWRKY51基因CDS序列。通过生物信息学分析,结合酵母自激活验证、亚细胞定位及模拟干旱胁迫下的实时荧光定量PCR(qRT-PCR)对PtrWRKY51基因功能进行初步研究。结果表明:PtrWRKY51全长579 bp,编码 192 aa。生物信息学分析及亚细胞定位试验结果表明,PtrWRKY51蛋白为非跨膜碱性不稳定亲水蛋白,定位于细胞核,含有WRKY家族特有的保守结构域,是第IIc类WRKY转录因子;酵母自激活验证试验表明PtrWRKY51基因具有自激活活性;qRT-PCR分析表明,8% PEG6000模拟干旱胁迫下,该基因在胁迫12 h后茎部与叶部相对表达量达到最大值,根部则出现在24 h,研究可为PtrWRKY51抗逆及生物学功能进一步研究提供参考。

关键词: 毛果杨, PtrWRKY51, 生物信息学, 酵母自激活, 亚细胞定位, 抗旱表达分析

Abstract:

In order to clarify the function of PtrWRKY51 gene of Populus trichocarpa, the CDS of PtrWRKY51 gene was cloned using P. trichocarpa from Nisqually-1 strain as material. The function of PtrWRKY51 gene was studied by bioinformatics analysis, and assayed by yeast self-activation verification, and subcellular localization and simulated drought stress by real-time qPCR. The results showed that the CDS of PtrWRKY51 was 579 bp and encoded 192 aa. Bioinformatics analysis and subcellular localization experiments showed that PtrWRKY51 was a non-transmembrane alkaline unstable hydrophilic protein, located in the nucleus and contained a conserved domain unique to WRKY family, it was a WRKY transcription factor classified to class IIc. The yeast self-activation verification experiment showed that PtrWRKY51 gene could self-activation activity. qRT-PCR showed that the expression of this gene was significantly induced by 8% PEG6000 and reached the highest expression in stem and leaf after 12 h stress, while the roots appeared after 24 h stress. This study could provide reference for further study on stress tolerance and biological function of PtrWRKY51.

Key words: Populus trichocarpa, PtrWRKY51, bioinformatics, yeast self-activation, subcellular localization, drought tolerance expression analysis

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