Bacterial degradation and bioremediation of chlorinated herbicides and biphenyls
Michael Seeger,Marcela Hernández,Marcela Hernández,Valentina Méndez,Bernardita L. Ponce,Macarena Córdova,Myriam González +6 more
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TLDR
Bacterial degradation of s-triazine herbicides and PCBs is described and novel strategies to improve bioremediation of these POPs are discussed.Abstract:
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.read more
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References
More filters
Journal ArticleDOI
The complete genome of Rhodococcus sp. RHA1 provides insights into a catabolic powerhouse
Michael P. McLeod,René L. Warren,William W. L. Hsiao,Naoto Araki,Matthew Myhre,Clinton Fernandes,Daisuke Miyazawa,Wendy Wong,Anita L. Lillquist,Dennis Wang,Manisha Dosanjh,Hirofumi Hara,Anca Petrescu,Ryan D. Morin,George S. Yang,Jeff M. Stott,Jacqueline E. Schein,Heesun Shin,Duane E. Smailus,Asim Siddiqui,Marco A. Marra,Steven J.M. Jones,Robert A. Holt,Fiona S. L. Brinkman,Keisuke Miyauchi,Masao Fukuda,Julian Davies,William W. Mohn,Lindsay D. Eltis +28 more
TL;DR: Overall, RHA1 appears to have evolved to simultaneously catabolize a diverse range of plant-derived compounds in an O2-rich environment and is established as an important model for studying actinomycete physiology.
Journal ArticleDOI
Pesticide mixtures, endocrine disruption, and amphibian declines: are we underestimating the impact?
Tyrone B. Hayes,Paola Case,Sarah Chui,Duc Chung,Cathryn Haeffele,Kelly Haston,Melissa Lee,Vien Phoung Mai,Youssra Marjuoa,John E. Parker,Mable Tsui +10 more
TL;DR: Estimating ecological risk and the impact of pesticides on amphibians using studies that examine only single pesticides at high concentrations may lead to gross underestimations of the role of pesticides in amphibian declines.
Journal ArticleDOI
Aromatic hydrocarbon dioxygenases in environmental biotechnology
TL;DR: Aromatic hydrocarbon dioxygenases have a broad substrate specificity and catalyze enantiospecific reactions with a wide range of substrates and make them attractive synthons for the production of industrially and medically important chiral chemicals.
Journal ArticleDOI
Isolation and Characterization of a Pseudomonas sp. That Mineralizes the s-Triazine Herbicide Atrazine
TL;DR: The isolation and characterization of Pseudomonas sp.