铈对亚洲苦草铜害的缓解效应

生态学杂志 ›› 2005, Vol. ›› Issue (2): 141-145.

铈对亚洲苦草铜害的缓解效应

马广岳, 施国新, 王学, 徐勤松, 胡金朝

南京师范大学生命科学学院, 南京, 210097

收稿日期:2004-02-28 修回日期:2004-06-11 出版日期:2005-02-10
通讯作者: 施国新
基金资助:
国家自然科学基金资助项目(30370083)。

Effects of Cerous on relieving Cu toxicity of Vallisneria asiatica

MA Guangyue, SHI Guoxin, WANG Xue, XU Qinsong, HU Jinzhao

Collage of Life Science, Nanjing Normal University, Nanjing 210097, China

Received:2004-02-28 Revised:2004-06-11 Online:2005-02-10

摘要/Abstract

摘要： 铈能减缓铜毒害导致的亚洲苦草根叶可溶性蛋白含量的下降及超氧阴离子(O₂^-·)、丙二醛(MDA)的累积。与同浓度的单一铜处理相比,加入20mg·L^-1的铈后,根和叶超氧化物歧化酶(SOD)、过氧化氢酶(CAT)活性和抗坏血酸(AsA)含量不同程度的增强或增多,而过氧化物酶(POD)的活性先降后升,暗示铈可能通过提高亚洲苦草活性氧清除能力以增强对铜的抗性和耐性。比较来看,铈对叶的缓解效应较根明显。

关键词: 拉格朗日逆分析, 森林蒸散, 涡动相关

Abstract: Cerium can relieve the decrease of soluble protein content,the accumulation of O₂^-? and MDA in roots and leaves of Vallisneria asiatica under stress of Cu²⁺.Compared with those of single Cu²⁺ treatment,20 mg稬^-1 Ce improved the activities of superoxide dismutase(SOD),catlase(CAT) and the content of AsA to a certain extent,while the activity of peroxidase(POD) decreased at first and increased subsequently.The results implied that Ce could enhance the ability of reactive oxygen species(ROS) scavenging system in the plant,therefore increase the resistance and tolerance to Cu stress.The relieving effect in leave by cerium was more obvious than that in roots.

Key words: Inverse Lagrangian dispersion analysis, Forest evapotranspiration, Eddy covariance method

中图分类号:

Q948

马广岳, 施国新, 王学, 徐勤松, 胡金朝. 铈对亚洲苦草铜害的缓解效应[J]. 生态学杂志, 2005, (2): 141-145.

MA Guangyue, SHI Guoxin, WANG Xue, XU Qinsong, HU Jinzhao. Effects of Cerous on relieving Cu toxicity of Vallisneria asiatica[J]. cje, 2005, (2): 141-145.

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