Artículo
Degradation of chlorobenzenes by a strain of Acidovorax avenae isolated from a polluted aquifer
Fecha de publicación:
09/2005
Editorial:
Pergamon-Elsevier Science Ltd.
Revista:
Chemosphere
ISSN:
0045-6535
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
A subsurface microbial community was isolated from a polluted site of Suquía River (Córdoba—Argentina), acclimated during 15 days in aerobic conditions using 1,2-dichlorobenzene (1,2-DCB) as the sole carbon source. From this acclimated community, we isolated and identified by 16S rDNA analysis a strain of Acidovorax avenae, which was able to perform the complete biodegradation of 1,2-DCB in two days affording stoichiometric amounts of chloride. This pure strain was also tested for biodegradation of chlorobenzene (CB); 1,3-DCB and 1,4-DCB, giving similar results to the experiments using 1,2-DCB.
The aromatic-ring-hydroxylating dioxygenase (ARHDO) α-subunit gene core, encoding the catalytic site of the large subunit of chlorobenzene dioxygenase, was detected by PCR amplification and confirmed by DNA sequencing. These results suggest that the isolated strain of A. avenae could use a catabolic pathway, via ARHDO system, leading to the formation of chlorocatecols during the first steps of biodegradation, with further chloride release and subsequent paths that showed complete substrate consumption.
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Articulos(ICYTAC)
Articulos de INST. DE CIENCIA Y TECNOLOGIA DE ALIMENTOS CORDOBA
Articulos de INST. DE CIENCIA Y TECNOLOGIA DE ALIMENTOS CORDOBA
Articulos(IMBIV)
Articulos de INST.MULTIDISCIPL.DE BIOLOGIA VEGETAL (P)
Articulos de INST.MULTIDISCIPL.DE BIOLOGIA VEGETAL (P)
Citación
Monferran, Magdalena Victoria; Echenique, Jose Ricardo; Wunderlin, Daniel Alberto; Degradation of chlorobenzenes by a strain of Acidovorax avenae isolated from a polluted aquifer; Pergamon-Elsevier Science Ltd.; Chemosphere; 61; 1; 9-2005; 98-106
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