BACTERIAL DEGRADATION AND BIOREMEDIATION OF CHLORINATED HERBICIDES AND BIPHENYLS

Chlorinated herbicides (e.g. s-triazines) and polychlorobiphenyls (PCBs) are persistent organic pollutants (POPs) that are widely distributed in the environment. s-Triazine herbicides are used in agriculture and forestry in diverse regions of the world. PCBs were produced worldwide for industrial ap...

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Autores principales:	Seeger,Michael, Hernández,Marcela, Méndez,Valentina, Ponce,Bernardita, Córdova,Macarena, González,Myriam
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2010
Materias:	bacterial degradation i-triazines PCBs catabolic genes genome bioremediation
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162010000100007
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spelling	oai:scielo:S0718-951620100001000072010-12-22BACTERIAL DEGRADATION AND BIOREMEDIATION OF CHLORINATED HERBICIDES AND BIPHENYLSSeeger,MichaelHernández,MarcelaMéndez,ValentinaPonce,BernarditaCórdova,MacarenaGonzález,Myriam bacterial degradation i-triazines PCBs catabolic genes genome bioremediation Chlorinated herbicides (e.g. s-triazines) and polychlorobiphenyls (PCBs) are persistent organic pollutants (POPs) that are widely distributed in the environment. s-Triazine herbicides are used in agriculture and forestry in diverse regions of the world. PCBs were produced worldwide for industrial applications, and an important amount of these compounds have been released into the environment. PCBs and s-triazines are toxic compounds that could act as endocrine disrupters and cause cancer. Therefore, environmental pollution with s-triazines and PCBs is of increasing concern. Bioremediation is an attractive technology for the decontamination of polluted sites. Microorganisms play a main role in the removal of POPs from the environment. Diverse bacteria able to degrade s-triazines and PCBs have been characterized. Bacterial degradation of s-triazine herbicides involves hydrolytic reactions catalyzed by amidohydrolases encoded by the atz genes. Anaerobic and aerobic bacteria are capable of biotransforming PCBs. Higher chlorinated PCBs are subjected to reductive dehalogenation by anaerobic microorganisms. Lower chlorinated biphenyls are oxidized by aerobic bacteria. Genome analyses of PCB-degrading bacteria have increased the knowledge of their metabolic capabilities and their adaptation to stressful conditions. For the removal of s-triazines and PCBs from the environment, efficient bioremediation processes have to be established. In this report, bacterial degradation of s-triazines and PCBs is described and novel strategies to improve bioremediation of these POPs are discussed.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.10 n.3 20102010-07-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162010000100007en10.4067/S0718-95162010000100007
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	bacterial degradation i-triazines PCBs catabolic genes genome bioremediation
spellingShingle	bacterial degradation i-triazines PCBs catabolic genes genome bioremediation Seeger,Michael Hernández,Marcela Méndez,Valentina Ponce,Bernardita Córdova,Macarena González,Myriam BACTERIAL DEGRADATION AND BIOREMEDIATION OF CHLORINATED HERBICIDES AND BIPHENYLS
description	Chlorinated herbicides (e.g. s-triazines) and polychlorobiphenyls (PCBs) are persistent organic pollutants (POPs) that are widely distributed in the environment. s-Triazine herbicides are used in agriculture and forestry in diverse regions of the world. PCBs were produced worldwide for industrial applications, and an important amount of these compounds have been released into the environment. PCBs and s-triazines are toxic compounds that could act as endocrine disrupters and cause cancer. Therefore, environmental pollution with s-triazines and PCBs is of increasing concern. Bioremediation is an attractive technology for the decontamination of polluted sites. Microorganisms play a main role in the removal of POPs from the environment. Diverse bacteria able to degrade s-triazines and PCBs have been characterized. Bacterial degradation of s-triazine herbicides involves hydrolytic reactions catalyzed by amidohydrolases encoded by the atz genes. Anaerobic and aerobic bacteria are capable of biotransforming PCBs. Higher chlorinated PCBs are subjected to reductive dehalogenation by anaerobic microorganisms. Lower chlorinated biphenyls are oxidized by aerobic bacteria. Genome analyses of PCB-degrading bacteria have increased the knowledge of their metabolic capabilities and their adaptation to stressful conditions. For the removal of s-triazines and PCBs from the environment, efficient bioremediation processes have to be established. In this report, bacterial degradation of s-triazines and PCBs is described and novel strategies to improve bioremediation of these POPs are discussed.
author	Seeger,Michael Hernández,Marcela Méndez,Valentina Ponce,Bernardita Córdova,Macarena González,Myriam
author_facet	Seeger,Michael Hernández,Marcela Méndez,Valentina Ponce,Bernardita Córdova,Macarena González,Myriam
author_sort	Seeger,Michael
title	BACTERIAL DEGRADATION AND BIOREMEDIATION OF CHLORINATED HERBICIDES AND BIPHENYLS
title_short	BACTERIAL DEGRADATION AND BIOREMEDIATION OF CHLORINATED HERBICIDES AND BIPHENYLS
title_full	BACTERIAL DEGRADATION AND BIOREMEDIATION OF CHLORINATED HERBICIDES AND BIPHENYLS
title_fullStr	BACTERIAL DEGRADATION AND BIOREMEDIATION OF CHLORINATED HERBICIDES AND BIPHENYLS
title_full_unstemmed	BACTERIAL DEGRADATION AND BIOREMEDIATION OF CHLORINATED HERBICIDES AND BIPHENYLS
title_sort	bacterial degradation and bioremediation of chlorinated herbicides and biphenyls
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2010
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162010000100007
work_keys_str_mv	AT seegermichael bacterialdegradationandbioremediationofchlorinatedherbicidesandbiphenyls AT hernandezmarcela bacterialdegradationandbioremediationofchlorinatedherbicidesandbiphenyls AT mendezvalentina bacterialdegradationandbioremediationofchlorinatedherbicidesandbiphenyls AT poncebernardita bacterialdegradationandbioremediationofchlorinatedherbicidesandbiphenyls AT cordovamacarena bacterialdegradationandbioremediationofchlorinatedherbicidesandbiphenyls AT gonzalezmyriam bacterialdegradationandbioremediationofchlorinatedherbicidesandbiphenyls
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BACTERIAL DEGRADATION AND BIOREMEDIATION OF CHLORINATED HERBICIDES AND BIPHENYLS

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