Isolation and Characterization of Cadmium- and Arsenic-Absorbing Bacteria for Bioremediation
| العنوان: | Isolation and Characterization of Cadmium- and Arsenic-Absorbing Bacteria for Bioremediation |
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| المؤلفون: | Yukihiro Munekage, Jatindra N. Bhakta, José Luis Balcázar, B. B. Jana, Kouhei Ohnishi |
| المصدر: | Water, Air, & Soil Pollution. 225 |
| بيانات النشر: | Springer Science and Business Media LLC, 2014. |
| سنة النشر: | 2014 |
| مصطلحات موضوعية: | Cadmium, Environmental Engineering, food.ingredient, Ecological Modeling, chemistry.chemical_element, Contamination, Biology, 16S ribosomal RNA, biology.organism_classification, Pollution, Microbiology, Minimum inhibitory concentration, Bioremediation, food, chemistry, Environmental Chemistry, Agar, Food science, Arsenic, Bacteria, Water Science and Technology |
| الوصف: | The contamination of hazardous metal(loid) is one of the serious environmental and human health risks. This study isolated a total of 40 cadmium (Cd)- and arsenic (As)-resistant bacterial isolates from coastal sediments by pour plate technique using tryptic soy agar supplemented with Cd or As (50 mg l−1) for use as metal(loid) bioremediation agents. Out of 40, 4 isolates, RCd3, RCd6, RAs7, and RAs10, showed a relatively higher growth rate in Cd- or As-supplemented culture media which were selected for further study. The selected isolates showed a high minimum inhibitory concentration (60–400 mg l−1 for Cd and 400–2200 mg l−1 for As), which demonstrated their remarkable Cd and As resistance capabilities. The metal(loid) removal efficiencies (0.032–0.268 μg Cd h−1 mg−1 and 0.0003–0.0172 μg As h−1 mg−1 [wet weight cell]) of selected isolates indicated their greater magnitude in absorbing Cd compared to As from water. Phylogenetic analysis of the 16S rDNA sequences revealed that isolates RCd3, RCd6, RAs7, and RAs10 were closely related to Acinetobacter brisouii, Pseudomonas abietaniphila, Exiguobacterium aestuarii, and Planococcus rifietoensis, respectively. Because of high Cd and As resistance and removal efficiency, the selected isolates can survive in a high metal(loid)-contaminated environment and could be a potential tool for bioremediation of high metal(loid)-contaminated effluents to protect the aquatic environment. |
| تدمد: | 1573-2932 0049-6979 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::02042414ecd5e7e0f257e95b23bee7a5Test https://doi.org/10.1007/s11270-014-2151-2Test |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi...........02042414ecd5e7e0f257e95b23bee7a5 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15732932 00496979 |
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