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| Effect of Cadmium on Scenedesmus quadricauda |
| Received:October 27, 2014 |
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| KeyWord:Scenedesmus quadricauda;cadmium;response |
| Author Name | Affiliation | E-mail | | YIN Wen-ke | College of Life Sciences, Northwest A&F University, Yangling 712100, China | | | CHENG Jin-feng | College of Life Sciences, Northwest A&F University, Yangling 712100, China | chengjinfeng@nwsuaf.edu.cn | | XIAO Wan-lu | College of Life Sciences, Northwest A&F University, Yangling 712100, China | | | GUO Rui-jun | College of Life Sciences, Northwest A&F University, Yangling 712100, China | | | KANG Bing | College of Life Sciences, Northwest A&F University, Yangling 712100, China | yl-kangbing@163.com |
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| Abstract: |
| Heavy metal pollution is one of the most concerned water environmental problems. In this study, the effects of different Cd2+ concentrations on the growth, pigments, hydrogen peroxide, superoxide anion and soluble protein of Scenedesmus quadricauda were investigated in laboratory. Result showed that algal growth was inhibited under cadmium stress, especially under high cadmium concentrations(3~7 mg·L-1). Pigment(chlorophyll a, chlorophyll b, and carotenoids) contents decreased with increasing concentrations of cadmium. Contents of hydrogen peroxide and superoxide anion increased significantly under 5~7 mg·L-1 and 7 mg·L-1, respectively. Soluble protein content reached the maximum at 1 mg·L-1 and decreased afterwards. Scenedesmus quadricauda displayed better tolerance to cadmium(upto 1 mg·L-1 cadmium). |
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