Effects of Cerous on relieving Cu toxicity of Vallisneria asiatica

Abstract

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

CLC Number:

Q948

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.

References

[1] 王狄,李锋民,熊治廷,等.2000.铜的植物毒性与植物蓄积的关系[J].土壤与环境,9(2):146～148.
[2] 王金胜,郭春绒,程玉香,等.1997.铈清除超氧阴离子自由基的机理[J].中国稀土学报,15(2):151～154.
[3] 王金胜,冀满祥,赵如意,等.1999.盐胁迫时铈保护小麦线粒体功能的研究[J].中国稀土学报,17(2):187～190.
[4] 王爱国,罗广华.1990.植物的超氧物自由基与羟胺反应的定量关系[J].植物生理学通讯,26(6):55～57.
[5] 吴卫东,秦孝发,江朱观,等.1994.稀土化合物对温石棉表面产生羟基自由基的抑制作用[J].卫生毒理学杂志,8(3):201～202.
[6] 张志良.1990.植物生理学实验指导[M].北京:高等教育出版社,155,183.
[7] 严重玲,洪业汤,林鹏,等.1999.酸雨胁迫下,稀土元素对菠菜膜保护系统作用[J].生态学报,19(4):543～545.
[8] 胡勤海,叶兆杰.1996.稀土元素的植物生理效应[J].植物生理学通讯,32(4):296～300.
[9] 倪嘉缵.1995.稀土元素无机化学[M].北京:科学出版社,13～37.
[10] Campbell MM, Ronald RS. 1996. Variation in lignin content and composition[J]. Plant Physiol., 26(2): 127～ 131.
[11] Christensen JH, Bauw G, et al. 1998. Purification and characterization of peroxidases correlated with lignification in poplarxylem [J]. Plant Physiol., 118:125 ～ 135.
[12] Heath RL, Huang LK. 1968. Photoperoxidation in isolated chloroplasts 1. Kinetics and stoichometry of fatty and peroxidation[J]. Arch Biochem . Biophys, 125:189 .
[13] Lewis NG, Yamamoto E. 1990. Lignin. Occurrence, biogenesis, and bio-degradation[J]. Ann. Plant Physiol. Plant Mol. Biol., 41: 455～ 496.
[14] Maehly AG. 1955. Plant peroxidase[J]. Method. Enzymol., 2:801 ～ 813.
[15] Sagisaka S. 1976. The occurance of peroxide in perennial plant,Populus gelrica [J]. Plant Physiol., 57: 308 ～ 309.