Effect of Ca2+ on the detoxification of Cd2+ byScenedesmus obliquus cells at low or high temperature |
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Authors: | A A Issa M S Adam R Abdel-Basset |
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Institution: | (1) Botany Department, Faculty of Science, Assiut University, Assiut, Egypt |
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Abstract: | Scenedesmus obliquus was incubated with Cd2+ in the presence or absence of calcium at low (10°C) or high (40°C) temperature. The Cd2+ uptake was affected not only by Ca2+ but also by temperature. Growth rate was inhibited by Cd2+ especially at low temperature. In all Ca2+-containing cultures,S. obliquus exhibited higher rates of growth, dry matter and pigment fractions than in those containing Cd2+ alone. Proteins exhibited a similar response. Ca2+ in the presence of Cd2+ was most efficient where protein contents were mostly doubled. On the other hand Ca2+ reduced the solute leakage by the test alga at 10 and 40°C. |
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