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dc.contributor.author
Briceño, G.
dc.contributor.author
Fuentes, María Soledad
dc.contributor.author
Palma, G.
dc.contributor.author
Jorquera, M. A.
dc.contributor.author
Amoroso, Maria Julia del R.
dc.contributor.author
Diez, M. C.
dc.date.available
2018-03-02T19:14:46Z
dc.date.issued
2012-09
dc.identifier.citation
Briceño, G.; Fuentes, María Soledad; Palma, G.; Jorquera, M. A.; Amoroso, Maria Julia del R.; et al.; Chlorpyrifos biodegradation and 3,5,6-trichloro-2-pyridinol production by actinobacteria isolated from soil; Elsevier; International Biodeterioration and Biodegradation; 73; 9-2012; 1-7
dc.identifier.issn
0964-8305
dc.identifier.uri
http://hdl.handle.net/11336/37694
dc.description.abstract
Chlorpyrifos (CP) is a widely used agricultural insecticide that is hazardous to both the environment and human health. Therefore, it is an essential to develop approaches to remove this compound from contaminated soils, water and sediments. In this study, actinobacteria were isolated from an agricultural soil that had received continuous applications of CP. Four strains were selected as a result of their tolerance to 50 mg L -1 of CP in agar plate and they were identified as Streptomyces sp. based on 16S rDNA. According to relationship of CP degradation and microbial growth studies, two isolates were selected and were named Streptomyces sp. strain AC5 and Streptomyces sp. strain AC7. The strains were cultivated in liquid medium with CP at concentrations of 25 mg L -1 and 50 mg L -1 for 72 h. The results indicated that both strains were able to rapidly degrade CP with about 90% degradation after 24 h of incubation. A different pattern of CP degradation was observed when its main metabolite, 3,5,6-trichloro-2-pyridinol (TCP) was monitored. A maximum concentration of 0.46 mg L -1 of TCP was produced by Streptomyces sp. strain AC5 and its concentration decreased as a function of time. In contrast, TCP production by Streptomyces sp. AC7 increased over time from 1.31 mg L -1 to 4.32 mg L -1. CP degradation was associated to microbial growth of the strains, pH modification, glucose consumption and organic acids excretion in the liquid medium. This work constitutes one of the few reports of Streptomyces as CP-degraders. Given the high CP degradation observed here, the Streptomycetes strains show a good potential as CP-degrading actinobacteria.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
Bioremediation
dc.subject
Chlorpyrifos
dc.subject
Pesticides
dc.subject
Streptomyces Sp.
dc.subject.classification
Bioremediación, Diagnóstico Biotecnológico en Gestión Medioambiental
dc.subject.classification
Biotecnología del Medio Ambiente
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
dc.title
Chlorpyrifos biodegradation and 3,5,6-trichloro-2-pyridinol production by actinobacteria isolated from soil
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-03-02T14:57:22Z
dc.journal.volume
73
dc.journal.pagination
1-7
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Briceño, G.. Universidad de la Frontera; Chile
dc.description.fil
Fil: Fuentes, María Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucuman. Planta Piloto de Procesos Industriales Microbiologicos; Argentina
dc.description.fil
Fil: Palma, G.. Universidad de la Frontera; Chile
dc.description.fil
Fil: Jorquera, M. A.. Universidad de la Frontera; Chile
dc.description.fil
Fil: Amoroso, Maria Julia del R.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucuman. Planta Piloto de Procesos Industriales Microbiologicos; Argentina
dc.description.fil
Fil: Diez, M. C.. Universidad de la Frontera; Chile
dc.journal.title
International Biodeterioration and Biodegradation
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.ibiod.2012.06.002
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0964830512001357


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