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镉对黑藻叶光化学及硝酸还原酶特性的影响
引用本文:杨艳华,陈国祥,刘少华,王娜,吴国荣,施国新.镉对黑藻叶光化学及硝酸还原酶特性的影响[J].南京师大学报,2002,25(1):28-32.
作者姓名:杨艳华  陈国祥  刘少华  王娜  吴国荣  施国新
作者单位:南京师范大学生命科学学院,南京师范大学生命科学学院,南京师范大学生命科学学院,南京师范大学生命科学学院,南京师范大学生命科学学院,南京师范大学生命科学学院 南京,210097,南京,210097,南京,210097,南京,210097,南京,210097,南京,210097
基金项目:国家自然科学基金 (39770 0 46 ),江苏省教育委员会高校科研资助项目 (1999SWX0 0 0 0SJ1)
摘    要:研究了不同浓度Cd^2 对黑藻(Hydrilla verticilla(L.f.)Royle)叶光化学及硝酸还原酶特性的影响。结果表明:随着Cd^2 浓度的增加,黑藻叶片的叶绿素含量、叶绿素a和b比值、PSⅠ、PSⅡ及全电子链的活性皆呈现下降的趋势;而其叶绿体ATP的含量、硝酸还原酶的活性、类囊体膜的室温吸收光谱和室温荧光发射光谱则呈现先上升后下降的趋势。实验表明:可根据黑藻叶光化学及硝酸还原酶特性的变化来监测环境中镉污染的程度。

关 键 词:  黑藻  光化学特性  硝酸还原酶  重金属污染  叶片  叶绿素  酶活性
文章编号:1001-4616(2002)01-0028-05
修稿时间:2001年8月31日

Effect of Cadmium on Characteristics of Photochemistry and Nitrate Reductase in the Leaves of Hydrilla verticilla (L.f.) Royle
Yang Yanhua,Chen Guoxiang,Liu Shaohua,Wang Na,Wu Guorong,Shi Guoxin.Effect of Cadmium on Characteristics of Photochemistry and Nitrate Reductase in the Leaves of Hydrilla verticilla (L.f.) Royle[J].Journal of Nanjing Normal University(Natural Science Edition),2002,25(1):28-32.
Authors:Yang Yanhua  Chen Guoxiang  Liu Shaohua  Wang Na  Wu Guorong  Shi Guoxin
Abstract:The effect of Cd 2+ on characteristics of photochemistry and nitrate reductase in the leaves of Hydrilla verticilla (L.f.) Royle was studied. The results indicated: with the increasing of the concentration of cadmium, content of chlorophyll, the ratio of chlorophyll a and b and electron transport activity of photosystem decreased; but the ATP content in chloroplast, nitrate reductase activity, absorption spectrum and fluorescence emission spectrum at room termperature first increased and then decreased. The results showed that the degree of cadmium pollution in the environment could be measured according to the changes of characteristics of photochemistry and nitrate reductase in the leaves of Hydrilla verticilla (L.f.) Royle.
Keywords:cadmium    Hydrilla verticilla  (L  f  ) Royle  photochemical characteristic  nitrate reductase
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