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| Main Author: | |
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| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidad de Guanajuato
2017
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| Online Access: | https://www.redalyc.org/articulo.oa?id=41652062002 |
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Table of Contents:
- Arsenic tolerance in bacterial cultures isolated from metal contaminated soil Azucena Lucero Alaniz-Andrade Consuelo Letechipía de León Rosa María Ramírez-Santoyo Jesús Guzmán-Moreno Luz Elena Vidales-Rodríguez Multidisciplinarias (Ciencias Sociales) bacillus micrococcus acinetobacter Arsenic tolerance antibiotic resistance Several centuries of uninterrupted mining activities in Zacatecas, Mexico has caused soil pollution with toxic metals and metalloids such as 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 mM – 300 mM of sodium dihydrogen arsenate and 4 mM – 25 mM of sodium arsenite) and liquid media (7.2 mM 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 the antibiotic multiresistance of the isolates is probably related to arsenic tolerance through a plasmid or chromosomally encoded resistance mechanism. 2017 artículo científico 0188-6266 https://www.redalyc.org/articulo.oa?id=41652062002 en http://www.redalyc.org/revista.oa?id=416 Acta Universitaria application/pdf Universidad de Guanajuato Acta Universitaria (México) Num.3 Vol.27