Adsorption of tributyltin by tributyltin resistant marine Pseudoalteromonas sp. cells |
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| Institution: | 1. Graduate School of Maritime Sciences, Kobe University, 5-1-1, Fukae, Higashinada, Kobe 658-0022, Japan;2. Department of Environmental Chemistry, Kobe Institute of Health, 4-6, Minatojima, Chuo, Kobe 650-0046, Japan;3. Hyogo Prefectural Institute of Technology, 3-1-12, Yukihira, Suma, Kobe 654-0037, Japan;1. School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, PR China;2. Beijing Key Laboratory on Resource-oriented Treatment of Industrial Pollutants, Beijing, 100083, China;1. School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai, 264209, PR China;2. School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, PR China;3. Wendeng Osteopath Hospital, Wendeng, 264400, PR China;1. UCIBIO-REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal;2. LAQV-REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal |
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| Abstract: | The isolate, Pesudoalteromonas sp. TBT1, could grow to overcome the toxicity of tributyltin chloride (TBTCl) up to 30 μM in the absence of Cl? in the medium until the cells reached an exponential phase of growth. The viability, however, was reduced after the cells reached a stationary phase. The degradation products, such as dibutyltin (DBT) and monobutyltin (MBT), were not detected in the growth medium, indicating that the isolate has no ability to degrade TBT into less toxic DBT and MBT. Up to about 107.5 TBT molecules were adsorbed by a single cell. The observation of morphological changes with an electron microscope showed that the cell surface became wrinkled after exposure to the lethal concentration of 10 mM TBTCl. These results indicate that the resistance of the isolate toward the toxicity of TBTCl is not related to the unique cell surface, which seems to play an important role in preventing the diffusion of TBTCl into the cytoplasm. |
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