| Hg、Cd对莼菜越冬芽光合膜光化学活性及多肽组分的影响 |
| |
| 引用本文： | 陈国祥,施国新,何兵,解凯彬,陆长梅,常福辰,魏锦城.Hg、Cd对莼菜越冬芽光合膜光化学活性及多肽组分的影响[J].环境科学学报,1999,19(5):521-525. |
| |
| 作者姓名： | 陈国祥 施国新 何兵 解凯彬 陆长梅 常福辰 魏锦城 |
| |
| 作者单位： | 南京师范大学生物系,南京,210097 |
| |
| 摘 要： | 研究了重金属Ｈｇ＾２＋、Ｃｄ＾２＋对水生植物莼菜越冬芽光合膜叶绿素含量、多肽组分及光化学特性的影响。实验结果表明，经１ｍｍｏｌ／Ｌ浓度Ｈｇ＾２＋处理后，叶片光合膜叶绿素含量、叶绿素ａ／ｂ值、室温吸收光谱、荧光发射光谱、光系统电子传递活性呈下降趋势；当Ｈｇ＾２＋处理浓度超过２ｍｍｏｌ／Ｌ时，叶片光合膜叶绿素含量及其它化光学活性显下降，光合膜多肽组分也产生降解。茎光合膜对Ｈｇ＾２＋的敏感程度比叶片低
|
| 关 键 词： | 莼菜越冬芽 叶绿素含量 叶绿素a/b 光合膜光化学活性 多肽组分 |
| 收稿时间： | 4/3/1998 12:00:00 AM |
| 修稿时间： | 1998/10/5 0:00:00 |
Effect of mercury and cadmium on photochemical activity and polypeptide compositions of photosynthetic membranes from winter bud of Brasenia schreberi |
| |
| CHEN Guoxiang,SHI Guoxin,HE Bing,XIE Kaibin,LU Changmei,CHANG Fuchen and WEI Jincheng.Effect of mercury and cadmium on photochemical activity and polypeptide compositions of photosynthetic membranes from winter bud of Brasenia schreberi[J].Acta Scientiae Circumstantiae,1999,19(5):521-525. |
| |
| Authors: | CHEN Guoxiang SHI Guoxin HE Bing XIE Kaibin LU Changmei CHANG Fuchen and WEI Jincheng |
| |
| Affiliation: | Department of Biology, Nanjing Normal University, Nanjing 210097,Department of Biology, Nanjing Normal University, Nanjing 210097,Department of Biology, Nanjing Normal University, Nanjing 210097,Department of Biology, Nanjing Normal University, Nanjing 210097,Department of Biology, Nanjing Normal University, Nanjing 210097,Department of Biology, Nanjing Normal University, Nanjing 210097 and Department of Biology, Nanjing Normal University, Nanjing 210097 |
| |
| Abstract: | The effects of Hg 2+ and Cd 2+ on chlorophyll contents, chlorophyll a/b values, absorption spectra, fluorescence emission spectra at room temperature, electron transport activity of photosystem and polypeptides compositions of thylakoid membrane from winter bud of hydrophyte Brasenia schreberi were investigated. The results showed that the chlorophyll content and photochemical activity decreased progressively with an increasing in concentrations of Hg 2+ and Cd 2+ . The effects of Hg 2+ and Cd 2+ on the chlorophyll content and photochemical activity of thylakoid from leaves decreased obviously and the thylakoid membrane polypeptide compositions was defraded. It was also shown that toxic effects of Hg 2+ on Brasenia schreberi winter bud was more significannt than that of Cd 2+ . |
| |
| Keywords: | Hg Cd |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《环境科学学报》浏览原始摘要信息 |
|
点击此处可从《环境科学学报》下载全文 |
|
