中国农业科学 ›› 2008, Vol. 41 ›› Issue (1): 308-313 .doi: 10.3864/j.issn.0578-1752.2008.01.042

• 研究简报 • 上一篇    下一篇

转反义GVDE基因烟草的叶绿素荧光参数及抗氧化酶活性的变化

黄金丽,李 伟,孟凡珍,胡丽萍,张振贤   

  1. 中国农业大学农学与生物技术学院
  • 收稿日期:2006-02-17 修回日期:1900-01-01 出版日期:2008-01-10 发布日期:2008-01-10
  • 通讯作者: 张振贤

The changes of fluorescence parameters and antioxidative enzymes activities in antisense VDE tobacco

Zhenxian Zhang   

  1. 中国农业大学农学与生物技术学院
  • Received:2006-02-17 Revised:1900-01-01 Online:2008-01-10 Published:2008-01-10
  • Contact: Zhenxian Zhang

摘要: 【目的】研究姜紫黄质脱环氧化酶基因(GVDE)的功能。【方法】以烟草为试材,构建反义抑制表达载体。将从姜中克隆的GVDE基因反向转入烟草,对获得的抗性植株用PCR和PCR-Southern检测分析。同时测定烟草叶片荧光参数变化和抗氧化物酶(APX、SOD、POD)活性。【结果】反义基因已整合到烟草的基因组中。转反义GVDE基因烟草的NPQ、Fv/Fm始终低于对照,APX、SOD和POD等抗氧化酶活性也低于对照植株。【结论】在转反义GVDE基因的烟草中,强光下耗散过剩光能的非辐射能量耗散能力明显降低。

关键词: 姜, 烟草, GVDE反义基因, 转基因烟草, NPQ, Fv/Fm

Abstract: Abstract: In this experiment, we constructed an antisense VDE vector (VDE gene was cloned from ginger by our laboratory)to transform tobacco leaves for further research the characteristics of VDE. PCR amplification and PCR-Southern demonstrated that this antisense gene was successful integrated into tobacco genomes. The results shown that in transgenic tobacco and ck, NPQ was increased and Fv/Fm was decreased in treatments of different light intensity and in strong light with illuminating time prolonged, NPQ、Fv/Fm in transgenic tobacco were lower than CK, Our research also showed that the activities of APX、SOD and POD in transgenic tobacco were also lower than CK.