Adsorption of zinc ions by Scenedesmus obliquus and S-quadricauda and its effect on growth and metabolism

被引：25
|
作者：
Omar, HH [1 ]
机构：
[1] Tanta Univ, Fac Sci, Dept Bot, Tanta, Egypt
来源：
BIOLOGIA PLANTARUM | 2002年 / 45卷 / 02期
关键词：
amino acids; green algae; growth; metal biosorption; phosphatase;
D O I：
10.1023/A:1015157009150
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
Zinc adsorption by two green algae, Scenedesmus obliquus and Scenedesmus quadricauda, was investigated. The maximum adsorption capability of zinc ion obtained from the Langmuir adsorption isotherms was higher for S. obliquus (6.67) than for S. quadricauda (5.03), and S. obliquus was more tolerant to zinc phytotoxicity than S. quadricauda. Lower concentrations of zinc increased dry mass, chlorophylls a and b, carotenoids, and total amino acid contents in both algae. On the other hand, higher concentrations of zinc were inhibitory for growth and the other metabolic activities in a concentration dependent manner.
引用
收藏
页码：261 / 266
页数：6
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