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Artículo

Evidence of α-, β- and γ-HCH mixture aerobic degradation by the native actinobacteria Streptomyces sp. M7

Sineli, Pedro EugenioIcon ; Tortella, G.R; Dávila Costa, José SebastiánIcon ; Benimeli, Claudia SusanaIcon ; Cuozzo, Sergio AntonioIcon
Fecha de publicación: 05/2016
Editorial: Springer
Revista: World Journal of Microbiology
ISSN: 0959-3993
e-ISSN: 1573-0972
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Ingeniería Medioambiental y Geológica, Geotécnicas

Resumen

The organochlorine insecticide γ-hexachlorocyclohexane (γ-HCH, lindane) and its non-insecticidal α- and β-isomers continue to pose serious environmental and health concerns, although their use has been restricted or completely banned for decades. In this study we report the first evidence of the growth ability of a Streptomyces strain in a mineral salt medium containing high doses of α- and β-HCH (16.6 mg l−1) as a carbon source. Degradation of HCH isomers by Streptomyces sp. M7 was investigated after 1, 4, and 7 days of incubation, determining chloride ion release, and residues in the supernatants by GC with µECD detection. The results show that both the α- and β-HCH isomers were effectively metabolized by Streptomyces sp. M7, with 80 and 78 % degradation respectively, after 7 days of incubation. Moreover, pentachlorocyclohexenes and tetrachlorocyclohexenes were detected as metabolites. In addition, the formation of possible persistent compounds such as chlorobenzenes and chlorophenols were studied by GC–MS, while no phenolic compounds were detected. In conclusion, we have demonstrated for the first time that Streptomyces sp. M7 can degrade α- and β-isomers individually or combined with γ-HCH and could be considered as a potential agent for bioremediation of environments contaminated by organochlorine isomers.
Palabras clave: AEROBIC DEGRADATION , BIOREMEDIATION , HCH ISOMERS , STREPTOMYCES SP , Β-HCH
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/38113
DOI: http://dx.doi.org/10.1007/s11274-016-2037-0
URL: https://link.springer.com/article/10.1007%2Fs11274-016-2037-0
Colecciones
Articulos(PROIMI)
Articulos de PLANTA PILOTO DE PROC.IND.MICROBIOLOGICOS (I)
Citación
Sineli, Pedro Eugenio; Tortella, G.R; Dávila Costa, José Sebastián; Benimeli, Claudia Susana; Cuozzo, Sergio Antonio; Evidence of α-, β- and γ-HCH mixture aerobic degradation by the native actinobacteria Streptomyces sp. M7; Springer; World Journal of Microbiology; 32; 5; 5-2016; 1-9
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