| 引用本文: | 陆长梅,施国新,吴国荣,陈国祥,常福辰.Hg,Cd对莼菜冬芽茎、叶叶绿素含量及活性氧清除系统的影响.湖泊科学,1999,11(4):322-327. DOI:10.18307/1999.0406 |
| LU Changmei,SHI Guoxin,WU Guorong,CHEN Guoxiang,CHANG Fuchen.Effects of Hg2+, Cd2+ on Chlorophyll Content and Scarenging Systems of Activated Oxygen in Stems and Leaves of Brasenia Schreberi Winter Bud. J. Lake Sci.1999,11(4):322-327. DOI:10.18307/1999.0406 |
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| 摘要: |
| 本文研究了Hg2+Cd2+对水生经济植物莼菜冬芽茎叶叶绿素含量、叶绿素 a/b值。可溶性蛋白含量、O2含量以及活性氧清除系统活性（SOD,CAT,POD）的影响实验结果表明：叶绿素含量、叶绿素 a/b值、可溶性蛋白含量随着 Hg2+,Cd2+处理浓度的加大呈下降趋势；低浓度Hg2+(≤1mmol．L-1,Cd2+(≤5mmol．L-1对O2'含量、SOD活性、CAT活性有激应升高,但随着Hg2+Cd2+处理浓度的加大又呈下降趋势； POD活性随着 Hg2+Cd2+处理浓度的加大一直呈上升趋势.莼菜冬芽对Hg2+的反应较Cd2+敏感,叶片对Hg2+Cd2+的反应较茎敏感 |
| 关键词: Hg2+ Cd2+ 莼菜冬芽 叶绿素 活性氧 |
| DOI：10.18307/1999.0406 |
| 分类号: |
| 基金项目:国家自然科学基金(39770046) |
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| Effects of Hg2+, Cd2+ on Chlorophyll Content and Scarenging Systems of Activated Oxygen in Stems and Leaves of Brasenia Schreberi Winter Bud |
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LU Changmei, SHI Guoxin, WU Guorong, CHEN Guoxiang, CHANG Fuchen
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College of Life Science, Nanjing Normal University, Nanjing 210097
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| Abstract: |
| This paper deals with the impact of Hg2+, Cd2+ on chlorophyll contents and scarenging systems of activated oxygen in stems and leaves of Brasenia schreberi winter bud. The results indicate that, as increasing of the concentration of Hg2+ and Cd2+, chlorophyll contents, chlorophyll a/b values and soluble protein contents decreased, the activities of SOD and CAT increased first and decreased afterwards and the activity of POD increased from beginning to end. The results also show that Brasenia schreberi winter bud is more sensitive to Hg2+ than to Cd2+, its leaves is more sensitive than its stems. |
| Key words: Hg2+ Cd2+ Brasenia schreberi winter bud chlorophyll activated oxygen |
