| 汞污染对水鳖的毒害影响 |
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| 引用本文： | 郝怀庆,施国新,徐勤松.汞污染对水鳖的毒害影响[J].南京师大学报,2000,23(3):87-90. |
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| 作者姓名： | 郝怀庆 施国新 徐勤松 |
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| 作者单位： | 南京师范大学生命科学学院,南京 |
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| 基金项目： | 国家自然科学基金!( 3 9770 0 4 6)，江苏省自然科学基金!( BK71 0 7)资助 |
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| 摘 要： | 用不同浓度的Ｈｇ＾２＋溶液培育水鳖，研究Ｈｇ＾２＋对水鳖叶片中叶绿素含量、叶绿素ａ／ｂ值、ＳＯＤ、ＣＡＴ、ＰＯＤ活性以及可溶性蛋白含量的影响。随着Ｈｇ＾２＋浓度的增加，水鳖叶片中叶绿素含量、叶绿素ａ／ｂ值、ＣＡＴ活性逐渐减小，而ＳＯＤ、ＰＯＤ活性、可溶性蛋白含量则先升后降。研究表明，Ｈｇ＾２＋处理破坏了水鳖叶片中的抗氧化酶系，造成活性氧过量积累，最终导致植物死亡。
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| 关 键 词： | 水鳖 SOD POD 叶绿素 汞污染 毒性 危害 |
| 文章编号： | ］ |
| 修稿时间： | 2000-03-13 |
The Toxic Effect of Hg2+ on Hydrocharis dubia B L. Backer |
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| HAO Huai-qing,SHI Guo-xin,XU Qin-song.The Toxic Effect of Hg2+ on Hydrocharis dubia B L. Backer[J].Journal of Nanjing Normal University(Natural Science Edition),2000,23(3):87-90. |
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| Authors: | HAO Huai-qing SHI Guo-xin XU Qin-song |
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| Abstract: | The effect of different Hg 2 concentrations on the content of chlorophyll, chlorophyll a/b values,the activity of SOD, CAT, POD and the soluble protein content of Hydrocharis dubia BL.Backer were studied. As increasing of the concentration of Hg 2 ,the content of chlorophyll, chlorophyll a/b values, the activity of CAT decreased,but the activity of SOD, POD, the soluble protein content of the leaves increased first and decreased afterwards. The results indicates that Hg 2 had toxic effect on the antioxidant enzyme systems, enhanced the excessive accumulation of the active oxygen free radicals, and eventually caused the death of plant. |
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| Keywords: | Hg 2 Hydrocharis dubia BL Backer SOD POD chlorophyll |
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