圆柏属常绿木本植物叶片抗氧化系统季节变化与抗冷冻的关系

生态学杂志

圆柏属常绿木本植物叶片抗氧化系统季节变化与抗冷冻的关系

陈银萍^1,2;张满效³;陈拓⁴;张有富⁴;安黎哲^2,4

¹兰州交通大学环境与市政工程学院，兰州 730070；
²兰州大学生命科学学院，兰州 730000；
³兰州石化职业技术学院，兰州 730060；
⁴中国科学院寒区旱区环境与工程研究所，兰州 730000

收稿日期:2005-12-12 修回日期:2006-07-28 出版日期:2006-11-10 发布日期:2006-11-10

Seasonal changes of leaf anti-oxidative system in Sabina and their relations to freezing tolerance

CHEN Yinping^1,2; ZHANG Manxiao³; CHEN Tuo⁴; ZHANG Youfu⁴;AN Lizhe^2,4

¹School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China;
²School of Life Science, Lanzhou University, Lanzhou 730000, China;
³Lanzhou College of Petrochemical Technology , Lanzhou 730060, China;
⁴Cold and Arid Region Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China

Received:2005-12-12 Revised:2006-07-28 Online:2006-11-10 Published:2006-11-10

摘要/Abstract

摘要： 测定分析圆柏属2种常绿木本植物叶抗氧化系统在冷冻适应过程中的季节变化。结果表明,叶能在组织结冰状况下生存与其具备完善的抗氧化保护系统有关，该系统能及时清除氧自由基、抑制膜脂过氧化、维持膜的完整性；冷适应期积累的活性氧可能诱导了抗氧化保护系统使叶片获得抗冻性。祁连圆柏的抗氧化系统比圆柏在抗冻性诱导中具有更广泛的适应策略。

关键词: 东海, 赤潮, 具齿原甲藻

Abstract: This paper studied the seasonal changes of leaf anti-oxidative system in evergreen woody plants Sabina przewalskii and S. chinensis during their adaptation process of freezing. The results showed that the freezing tolerance of Sabina was correlated with its leaf anti-oxidative system whichcould scavenge or detoxify reactive oxygen species (ROS), inhibit membrane lipid peroxidation, and maintain membrane integrality in time. The ROS accumulated in the process of cold acclimation might induce the leaf to acquire freezing tolerance through its anti-oxidative system. The better capability of anti-oxidative system in S. przewalskii might account for its greater freezing tolerance than S. chinensis.

Key words: East China Sea, Harmful alga bloom, Prorocentrum dentatum

陈银萍;张满效;陈拓;张有富;安黎哲. 圆柏属常绿木本植物叶片抗氧化系统季节变化与抗冷冻的关系[J]. 生态学杂志.

CHEN Yinping^1,2; ZHANG Manxiao³; CHEN Tuo⁴; ZHANG Youfu⁴;AN Lizhe^2,4. Seasonal changes of leaf anti-oxidative system in Sabina and their relations to freezing tolerance[J]. cje.

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