欢迎访问《植物研究》杂志官方网站,今天是 分享到:

植物研究 ›› 2007, Vol. 27 ›› Issue (5): 574-577.doi: 10.7525/j.issn.1673-5102.2007.05.015

• 论文 • 上一篇    下一篇

低温胁迫下不同光照条件对锦熟黄杨抗氧化酶活性的影响

徐 娜1,2;董晓红2;关 旸2*;王 静2   

  1. 1.东北林业大学森林生态教育部重点实验室,哈尔滨 150040 2.哈尔滨师范大学生命与环境科学学院,哈尔滨 150025
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-09-20 发布日期:2007-09-20
  • 通讯作者: 关 旸
  • 基金资助:
     

The Effect of Low Temperature Stress on Antioxidant Enzyme Activities of Buxus sempervirens L. Under Different Light Conditions

XU Na;DONG Xiao-Hong;GUAN Yang*;WANG Jing   

  1. 1.Key Laboratory of Forest Plant Ecology,Ministry of Education,Northeast Forestry University,Harbin 150040 2.Department of Biology,Harbin Normal University,Harbin 150080
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-09-20 Published:2007-09-20
  • Contact: GUAN Yang
  • Supported by:
     

摘要: 研究了锦熟黄杨(Buxus sempervirens L.)在低温胁迫下不同光照条件(12 h光照/12 h黑暗、24 h全光、24 h全黑)对其抗氧化酶活性的影响,结果表明:低温不同光照条件下细胞膜透性和丙二醛含量均高于对照(20℃ 12 h光照/12 h黑暗),细胞膜透性和丙二醛含量在5℃ 24 h光照条件下最大;低温胁迫下SOD活性高于对照,并在5℃ 24 h光照条件下达到最高值;CAT的活性仍维持较高水平,5℃ 12 h光照/12 h黑暗显著高于对照及其它处理;在低温有光照条件下,POD活性升高,黑暗条件下POD活性低于对照。低温胁迫下POD、SOD和CAT的活性均呈上升趋势,可能是植株具有较强抗性的原因。

关键词: 锦熟黄杨, 低温胁迫, 光照, 抗氧化酶活性

Abstract: The effect of low temperature stress on antioxidant enzyme activity under different conditions were studied. The results showed that the relative membrane permeability and content of MDA were higher than the control. The activitie of SOD under low temperature was higher than the others and the highest level under 5℃/24 h light. The activity of CAT maintained relatively high level under low temperature and different light conditions. It was higher under 5℃12 h light/12 h dark than other groups. The activity of POD was higher under low temperature with light and was lower under dark than the control. The POD、SOD、CAT activity increased under chilling. This might be one of the reason for strong resistance to chilling in Buxus sempervirens.

Key words: Buxus sempervirens, low temperature stress, light, antioxidant enzyme activities

中图分类号: