镉胁迫下红树植物木榄幼苗的生理生化特性

被引:23
作者
陶毅明
陈燕珍
梁士楚
梁杨琳
机构
[1] 广西师范大学生命科学学院
关键词
镉; 红树植物; 木榄; 叶绿素; 抗氧化酶;
D O I
10.13292/j.1000-4890.2008.0158
中图分类号
X173 [环境植物学];
学科分类号
摘要
用含CdCl2的Hoagland营养液处理了沙培中的木榄(Bruguiera gymnorrhiza)幼苗。2个月后对幼苗丙二醛(MDA)、叶绿素含量、过氧化物酶(POD)、·超氧化物歧化酶(SOD)和过氧化氢酶(CAT)活性及其同工酶进行分析。结果表明,镉引起幼苗膜质过氧化,导致总叶绿素含量显著下降。镉主要影响迁移率大的阴离子型POD同工酶的活性。1mmol·L-1镉显著抑制根中2条CAT同工酶RC-1和RC-2的活性。木榄根CAT和叶POD同工酶分析可作为红树林镉污染的监测手段之一。
引用
收藏
页码:762 / 766
页数:5
相关论文
共 41 条
[1]  
污染生态学基础[M]. 云南大学出版社 , 王焕校编著, 1990
[2]  
Catalase is a sink for H2 O2 and is indispensable for stress defense in C3 plants. Willekens H,Chamnongopol S,Davey M,Schraudner M,Langebartels C,et al. EMBO Journal . 1997
[3]  
Effect of cadmium on lipid peroxidation, superoxide anion generation and activities of antioxidant enzymes in growing rice seedlings[J] . Kavita Shah,Ritambhara G Kumar,Shalini Verma,R.S Dubey. &nbspPlant Science . 2001 (6)
[4]   Comparative studies of H2O2 detoxifying enzymes in green and greening barley seedlings under cadmium stress [J].
Hegedüs, A ;
Erdei, S ;
Horváth, G .
PLANT SCIENCE, 2001, 160 (06) :1085-1093
[5]   Growth and physiological responses of Kandelia candel and Bruguiera gymnorrhiza to livestock wastewater [J].
Ye, Y ;
Tam, NFY .
HYDROBIOLOGIA, 2002, 479 (01) :75-81
[6]  
Arsenate toxicity: effects on oxidative stress response molecules and enzymes in red clover plants[J] .  &nbspPlant Science . 2002 (5)
[7]  
Performing the paradoxical: how plant peroxidases modify the cell wall[J] . Filippo Passardi,Claude Penel,Christophe Dunand. &nbspTrends in Plant Science . 2004 (11)
[8]   Induction of oxidative stress and antioxidative mechanisms in Phaseolus vulgaris after Cd application [J].
Smeets, K ;
Cuypers, A ;
Lambrechts, A ;
Semane, B ;
Hoet, P ;
Van Laere, A ;
Vangronsveld, J .
PLANT PHYSIOLOGY AND BIOCHEMISTRY, 2005, 43 (05) :437-444
[9]  
植物生理学实验指导[M]. 高等教育出版社 , 张志良主编, 1990
[10]  
现代植物生理学实验指南[M]. 科学出版社 , 中国科学院上海植物生理研究所等 编, 1999