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[1]陈必链,黄勤,庄惠如,等.从绿色巴夫藻超微结构观察硒对锌毒性的保护效应[J].应用与环境生物学报,2004,10(01):60-063.
 CHEN Bilian,et al..Protective effect of Se against Zn toxicity on ultrastruture of Pavlova viridis Tseng (haptophyceae)[J].Chinese Journal of Applied & Environmental Biology,2004,10(01):60-063.
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从绿色巴夫藻超微结构观察硒对锌毒性的保护效应()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
10卷
期数:
2004年01期
页码:
60-063
栏目:
综述
出版日期:
2004-02-25

文章信息/Info

Title:
Protective effect of Se against Zn toxicity on ultrastruture of Pavlova viridis Tseng (haptophyceae)
作者:
陈必链黄勤庄惠如施巧琴吴松刚
Author(s):
CHEN Bilianet al.
Keywords:
Keywords Pavlova viridis protective effect zinc selenium ultrastructure
Abstract:
Abstract The protective effects of selenium against zinc toxicity in the flagellate alga Pavlova viridis were investigated using transmission electron microscopy. Cells from a control and two experimental groups were compared for their ultrastructural characteristics. In experimental group one, the culture medium was treated with 15 mg L-1 Zn (ZnSO4·7H2O), while in group two, it with both 15 mg L-1 Se (Na2SeO3·5H2O) and 15 mg L-1Zn. The results showed that the independent use of Zn at a concentration of 15 mg L-1 caused serious damage to the chloroplast tetrolobes in the algae, yet this effect was prevented in the presence of Se. The algal cells affected by Zn had variouslysized, electrondense bodies in cytoplasm and chloroplast matrix. In contrast, the cells treated with both Zn and Se were characterized by the occurrence of electrondense particles in vacuole inclusion body. Accordingly, the following hypothesis was made: when acting alone, the extra Zn in P. viridis cells was compartmented in particular molecules, identified as electron dense bodies, whereas this process was inhibited by the formation of Zn selenides, in which the Zn was inactivated, thereby protecting the cells against Zn toxicity. Fig 3, Tab 1, Ref 28
更新日期/Last Update: 2004-02-26