%0 Journal Article
%T Effect of mercury and cadmium on photochemical activity and polypeptide compositions of photosynthetic membranes from winter bud of Brasenia schreberi<br>Hg、Cd对莼菜越冬芽光合膜光化学活性及多肽组分的影响
%A CHEN Guoxiang
%A SHI Guoxin
%A HE Bing
%A XIE Kaibin
%A LU Changmei
%A CHANG Fuchen
%A WEI Jincheng
%A <br>陈国祥
%A 施国新
%A 何兵
%A 解凯彬
%A 陆长梅
%A 常福辰
%A 魏锦城
%J 环境科学学报
%D 1999
%I 
%X 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+ .
%K Hg
%K Cd<br>莼菜越冬芽
%K 叶绿素含量
%K 叶绿素a/b
%K 光合膜光化学活性
%K 多肽组分
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=03A55E61A8750ACAC6AF81EF9E2AC838&aid=8E0EC9D0A993E5BB&yid=B914830F5B1D1078&vid=2A8D03AD8076A2E3&iid=94C357A881DFC066&sid=68FF5306A8F9C315&eid=20C3B205768D55E0&journal_id=0253-2468&journal_name=环境科学学报&referenced_num=43&reference_num=11