华北农学报 ›› 2014, Vol. 29 ›› Issue (2): 165-169. doi: 10.7668/hbnxb.2014.02.031

所属专题: 玉米 盐碱胁迫 生物技术

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盐胁迫对转TaNHX2基因玉米幼苗生长的影响

王小丽1, 赵欣梅1, 张欢欢2, 董艳辉2, 孙毅1,2,3   

  1. 1 山西大学 生物工程学院 山西 太原 030006;
    2 山西省农业科学院 生物技术研究中心 山西 太原 030031;
    3 农业部黄土高原作物基因资源与种质创制重点实验室 山西 太原 030031
  • 收稿日期:2013-12-11 出版日期:2014-04-28
  • 通讯作者: 孙毅(1953-),男,黑龙江哈尔滨人,研究员,博士,主要从事植物基因工程和分子生物学研究。
  • 作者简介:王小丽(1988-),女,山西吕梁人,在读硕士,主要从事作物遗传育种研究。
  • 基金资助:
    国家自然科学基金项目(31240081);国家转基因生物新品种培育重大专项(2013ZX08003001);山西省科技攻关项目(20110311009)

Influence of Salt Stress on Growth of Transgenic Maize Seedlings with TaNHX2 Gene

WANG Xiao-li1, ZHAO Xin-mei1, ZHANG Huan-huan2, DONG Yan-hui2, SUN Yi1,2,3   

  1. 1 College of Biological Engineering, Shanxi University, Taiyuan 030006, China;
    2 Research Center of Biotechnology, Shanxi Academy of Agricultural Sciences, Taiyuan 030031, China;
    3 Key Laboratory of Crop Gene Resources and Germplasm Enhancement on Loess Plateau, Ministry of Agriculture, Taiyuan 030031, China
  • Received:2013-12-11 Published:2014-04-28

摘要: 采用Hoagland营养液水培方法,研究了不同浓度NaCl胁迫条件下,转TaNHX2基因玉米自交系昌7-2和非转基因对照的幼苗生长情况、植株形态和生理指标的差异。结果显示,转基因玉米植株表现出一定的抗逆性,生长状况明显优于对照;随着盐胁迫浓度的增加,转基因和非转基因玉米植株株高、根长、鲜质量、干质量和叶绿素含量逐渐下降,丙二醛含量逐渐上升,但是转基因玉米的变化幅度较小;在几乎所有胁迫浓度下,转基因玉米植株的株高、根长、鲜质量、干质量、叶绿素含量均显著高于非转基因植株,丙二醛含量均比非转基因植株低。以上结果说明,转TaNHX2基因玉米幼苗的耐盐性明显优于非转基因对照。

关键词: 转基因玉米, TaNHX2基因, 盐胁迫, 幼苗生长, 生理指标

Abstract: The growth performance, morphological traits and physiology indices between transgenic and non- transgenic maize seedlings (cv. Chang 7-2) under various concentrations of NaCl stress were investigated by Hoag- land solution culture. The results showed that transgenic maize seedlings exhibited resistance to salt, and their growth performance was superior compared to the non-transgenic seedlings. With the increase of salt concentration, the seedling height, root length, fresh weight, dry weight and chlorophyll content of both transgenic maize seedlings and non-transgenic controls decreased, and MDA content increased. But the changing ranges of transgenic maize seedlings were relatively narrower. Under almost all stress concentrations, the seedling height, root length, fresh weight, dry weight and chlorophyll content of transgenic maize seedlings were significantly higher than those of non- transgenic ones, and MDA contents were lower. Therefore, transgenic maize seedlings were apparently more toler- ant to salt stress than the non-transgenic ones.

Key words: Transgenic maize, TaNHX2 gene, Salt stress, Seedling growth, Physiology index

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引用本文

王小丽, 赵欣梅, 张欢欢, 董艳辉, 孙毅. 盐胁迫对转TaNHX2基因玉米幼苗生长的影响[J]. 华北农学报, 2014, 29(2): 165-169. doi: 10.7668/hbnxb.2014.02.031.

WANG Xiao-li, ZHAO Xin-mei, ZHANG Huan-huan, DONG Yan-hui, SUN Yi. Influence of Salt Stress on Growth of Transgenic Maize Seedlings with TaNHX2 Gene[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2014, 29(2): 165-169. doi: 10.7668/hbnxb.2014.02.031.

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