Cadmium uptake by a phytoplankton species in the presence of different inhibitors&
| Autor: | M. Romeo, S. Puiseux-Dao, M. Gnassia‐Barelli, C. S. Karez |
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| Rok vydání: | 1989 |
| Předmět: |
Cadmium
Voltage-dependent calcium channel biology Health Toxicology and Mutagenesis ATPase chemistry.chemical_element Pollution Incubation period Metal Biochemistry chemistry visual_art Phytoplankton biology.protein visual_art.visual_art_medium medicine Environmental Chemistry Phosphorylation Verapamil medicine.drug |
| Zdroj: | Toxicological & Environmental Chemistry. 22:97-100 |
| ISSN: | 1029-0486 0277-2248 |
| DOI: | 10.1080/02772248909357429 |
| Popis: | The uptake of cadmium by the Haptophyceae Hymenomonas elongata was studied as regards the energetic processes and Ca‐transport. For this purpose, experiments were carried out in the presence of an uncoupler of the phosphorylation : CCCP and of an inhibitor of calcium channels and also of Ca2+‐ATPase : verapamil. To reduce the number of assays, a factorial experimental design was used, in which all variables:— concentration of Cd in the medium—incubation time and—the presence of the inhibitor, are at two levels. In the absence of inhibitor, Cd uptake was found to vary as a function of metal concentration in the medium and of incubation time. CCCP significantly increased Cd uptake by H. elongata at sufficient incubation time. Therefore Cd uptake seemed linked to an energy‐dependent process, involving an ATPase. Verapamil immediately increased Cd uptake, implying an interaction between Cd and Ca. |
| Databáze: | OpenAIRE |
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