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植物研究 ›› 2020, Vol. 40 ›› Issue (3): 433-440.doi: 10.7525/j.issn.1673-5102.2020.03.015

• 研究报告 • 上一篇    下一篇

杨树ERF11转录因子基因应答渗透胁迫表达分析

刘悦, 赵凯, 吕冠斌, 姜廷波, 周博如   

  1. 东北林业大学林木遗传育种国家重点实验室, 哈尔滨 150040
  • 收稿日期:2019-09-19 出版日期:2020-05-05 发布日期:2020-05-29
  • 通讯作者: 周博如,E-mail:896099005@qq.com E-mail:896099005@qq.com
  • 作者简介:刘悦(1995-),女,硕士研究生,主要从事分子生物学研究。
  • 基金资助:
    转基因生物新品种培育重大专项(2018ZX08020002)

Transcription Factor Gene ERF11 Response to Osmotic Stress in Populus simonii×P.nigra Poplar

LIU Yue, ZHAO Kai, Lü Guan-Bin, JIANG Ting-Bo, ZHOU Bo-Ru   

  1. State Key Laboratory of Tree Genetic and Breeding, Northeast Forestry University, Harbin 150040
  • Received:2019-09-19 Online:2020-05-05 Published:2020-05-29
  • Supported by:
    Major Special Project for the Cultivation of New Varieties of Genetically Modified Organisms(2018ZX0802002)

摘要: 从小黑杨(Populus simonii×P.nigra)叶片中克隆出732 bp的ERF11转录因子基因(Potri.011G057000.1)cDNA,其编码的蛋白含有243个氨基酸,属于不稳定的亲水蛋白,不存在信号肽,不具跨膜能力,含AP2/ERF家族保守结构域。系统进化树表明,小黑杨ERF11蛋白与胡杨、麻疯树、蓖麻、橡胶树、木薯遗传距离较近,说明其亲缘关系较近。亚细胞定位结果表明,ERF11蛋白定位于细胞核中。ERF11基因表达具有组织特异性,并受胁迫诱导表达。其在根中相对表达水平明显比在茎和叶中表达水平高,在盐和甘露醇胁迫下,基因均表现上调表达。表明ERF11转录因子基因可能与植物应答高盐和干旱胁迫相关。

关键词: 小黑杨, 转录因子, 基因表达, 胁迫

Abstract: The ERF11 transcription factor gene(Potri.011G05700.1) cDNA is encoded with 243 amino acids in Populus simonii×P.nigra. ERF11 gene protein is an unstable pro-water protein, has no signal peptide, has no transmembrane ability, and contains AP2/ERF family conservative structure. The systematic evolution tree shows that PsnERF11 protein is close to Populus trichocarpa, Euphratica, Ricinus communis, Hevea brasiliensis, Jatropha curcas, Manihotesculenta, indicating that the genetic relationship is relatively close. The results of subcellular positioning show that ERF11 protein is located in the nucleus. ERF11 gene expression is tissue-specific and induced by coercion. Its relative expression level in the root was significantly higher than in the stem and leaf, and the gene was expressed higher under the pressure of salt and glycol. It is shown that ERF11 transcription factor genes may be associated with plant response to high salt and drought stress.

Key words: Populus simonii×P.nigra, transcription factors, gene expression, stress

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