湖北农业科学 ›› 2018, Vol. 57 ›› Issue (20): 23-26.doi: 10.14088/j.cnki.issn0439-8114.2018.20.005

• 育种·栽培 • 上一篇    下一篇

铜胁迫对油菜叶片内源生长因子的影响

燕辉1, 杨秀霞2, 赖发英2   

  1. 1.河南科技大学农业装备工程学院,河南 洛阳 471000;
    2.江西农业大学国土资源与环境学院/江西省鄱阳湖流域农业资源与生态重点实验室,南昌 330045
  • 收稿日期:2018-07-16 发布日期:2018-10-25
  • 作者简介:燕 辉(1984-),男,河南商丘人,助理研究员,博士,主要从事农业节水与生理生态研究,(电话)0379-64877717(电子信箱)hnyanhui@yeah.net。
  • 基金资助:
    国家自然科学基金资助项目(51741905; 31460540; 51409131); 江西省科技支撑计划资助项目(20142BBF60003; 20151BBF60013)

Effect of Cu Stress on Endogenous Growth Regulators in Oilseed Rape

YAN Hui1, YANG Xiu-xia2, LAI Fa-ying2   

  1. 1.College of Agricultural Equipment Engineering,Henan University of Science and Technology,Luoyang 471000,Henan,China;
    2.College of Land Resources and Environmental Sciences,Jiangxi Agricultural University/Key Laboratory of Poyang Lake Basin Agricultural Resources and Ecology of Jiangxi Province,Nanchang 330045,China
  • Received:2018-07-16 Published:2018-10-25

摘要: 为了揭示铜胁迫对油菜(Brassica napus L.)生理特性的影响,对铜胁迫下油菜叶片内源激素含量及相互关系进行了分析。结果表明,随着铜离子浓度的增大和胁迫时间的延长,油菜叶片脱落酸(ABA)含量呈逐步升高趋势;轻度铜胁迫下,生长素(IAA)的含量亦逐步升高,但随着铜胁迫程度的加剧,生长促进型因子IAA、赤霉素(GA)与细胞分裂素(ZR)的含量最终均呈现出降低趋势。进一步分析各内源生长因子间的关系发现,IAA/ABA、GA/ABA、ZR/ABA和(IAA+GA+ZR)/ABA的值均随着胁迫加剧而逐步降低,这会限制细胞分裂与叶片伸长;但另一方面,逆境生长因子ABA含量的相对增加能够启动油菜体内的抗逆应激反应,从而增强油菜的抗逆性。

关键词: 油菜(Brassica napus L.), 铜胁迫, 内源生长因子

Abstract: To reveal the effect of Cu stress on physiological characteristics in oilseed rape(Brassica napus L.),the content and interrelation of endogenous growth regulators under Cu stress were analyzed in this study. The results showed that,with the increase of treatment time and Cu concentration,abscisic acid(ABA) content in oilseed rape leaves showed a trend towards increasing. Meanwhile,the content of auxin(IAA) also increased with 1 day of Cu stress. However,with the increase of Cu stress,the growth promoting regulators,such as IAA,gibberellin(GA) and cytokinin(ZR),would showed a trend towards decreasing. Further analysis of the interrelation between endogenous hormones showed that,with the increase of Cu stress,the values of IAA/ABA,GA/ABA,ZR/ABA and(IAA+GA+ZR)/ABA increased gradually,which would restraint cell division and leaf elongation. But,with the increase of ABA,the anti-stress response would be started in oilseed rape and the adversity resistance would be enhanced.

Key words: oilseed rape(Brassica napus L.), Cu stress, endogenous growth regulators

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