Arsenic tolerance in bacterial cultures isolated from metal contaminated soil
Several centuries of uninterrupted mining activities in Zacatecas, Mexico becomes a problem of soil pollution with toxic metals and metalloids as the arsenic. In this study, the arsenic-tolerance of ten bacterial isolates from a metal contaminated site were analyzed and high tolerance was observed i...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2017 |
| País: | México |
| Institución: | UNIVERSIDAD DE GUANAJUATO |
| Repositorio: | Acta Universitaria |
| Idioma: | inglés español |
| OAI Identifier: | oai:www.actauniversitaria.ugto.mx:article/1189 |
| Acceso en línea: | https://www.actauniversitaria.ugto.mx/index.php/acta/article/view/1189 |
| Access Level: | acceso abierto |
| Palabra clave: | Arsenic tolerance antibiotic resistance Bacillus Micrococcus Acinetobacter Microbiology Tolerancia a arsénico resistencia a antibióticos Acinetobacter. Microbiología |
| Sumario: | Several centuries of uninterrupted mining activities in Zacatecas, Mexico becomes a problem of soil pollution with toxic metals and metalloids as the arsenic. In this study, the arsenic-tolerance of ten bacterial isolates from a metal contaminated site were analyzed and high tolerance was observed in both solid (40 - 300 mM of sodium arseniate and 4 - 25 mM of sodium arsenite) and liquid media (7.2 and 11.3 mM arsenite). The arsenic tolerant isolates were identified by biochemical and 16S rRNA-encoding gene amplification analysis as members of the Bacillus, Micrococcus and Acinetobacter genus. A study of resistance to antibiotics revealed a high prevalence of resistance to beta-lactams and moderate prevalence to nitrofurantoin, vancomycin and ceftriaxone suggesting that antibiotic multiresistance of this isolates is probably related to arsenic tolerance throughout a plasmid or chromosomally encoded resistance mechanism. |
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