Results 111 to 120 of about 493 (147)
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Regulation of organohalide respiration
Advances in Microbial Physiology, 2019Organohalide respiration (OHR) is an anaerobic metabolism by which bacteria conserve energy with the use of halogenated compounds as terminal electron acceptors. Genes involved in OHR are organized in reductive dehalogenase (rdh) gene clusters and can be found in relatively high copy numbers in the genomes of organohalide-respiring bacteria (OHRB). The
Mathilde Stephanie Willemin +1 more
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Organohalide Respiration with Diclofenac by Dehalogenimonas
Environmental Science & Technology, 2022Diclofenac (DCF) is a pharmaceutically active contaminant frequently found in aquatic ecosystems. The transformation pathways and microbiology involved in the biodegradation of DCF, particularly under anoxic conditions, remain poorly understood. Here, we demonstrated microbially mediated reductive dechlorination of DCF in anaerobic enrichment culture ...
Xiuying Li +7 more
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Glucose facilitates the acclimation of organohalide-respiring bacteria
Journal of Hazardous Materials, 2023Organohalide respiring bacteria (OHRB) are the mainstay for bioremediation of organohalide contaminated sites. Enrichment screening of OHRB is prerequisite for the development of high performance dehalogenating bacterial agents. Herein, different domestication strategies were formulated for the main factors (nutrients and inocula) affecting the ...
Xuemei, Zhu +6 more
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Structural basis for organohalide respiration
Science, 2014How bacteria break down organohalides Anaerobic bacteria can break down a range of organohalide pollutants. To do so, they use unusual reductive dehalogenase enzymes that remove the halogen ion from the molecule, making the pollutants less toxic. Bommer et al. describe x-ray
Bommer, Martin +5 more
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Organohalide Respiration with Chlorinated Ethenes under Low pH Conditions
Environmental Science & Technology, 2017 Bioremediation at chlorinated solvent sites often leads to groundwater acidification due to electron donor fermentation and enhanced dechlorination activity. The microbial reductive dechlorination process is robust at circumneutral pH, but activity declines at groundwater pH values below 6.0.
Jun Yan, Tyler Marcet, Yi Yang
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Genomic insights into organohalide respiration
Current Opinion in Biotechnology, 2013In the last few years there has been a burst of genomes released for organohalide respiring bacteria (referred to as OHRB herein though the process is otherwise known as dehalorespiration, reductive dechlorination, or halorespiration). The microorganisms are employed in bioremediation of sites contaminated with chlorinated ethene, ethane, and methanes,
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Science of the Total Environment, 2020
Halogenated compounds such as polychlorinated biphenyl (PCBs) and polybrominated diphenyl ethers (PBDEs) enter wastewater treatment plants (WWTPs) via the sewage system. These organic contaminants partition between the aqueous and the biosolid phase, where the former is discharged as wastewater effluent.
Birthe Kjellerup, Ran Jing
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Halogenated compounds such as polychlorinated biphenyl (PCBs) and polybrominated diphenyl ethers (PBDEs) enter wastewater treatment plants (WWTPs) via the sewage system. These organic contaminants partition between the aqueous and the biosolid phase, where the former is discharged as wastewater effluent.
Birthe Kjellerup, Ran Jing
exaly +3 more sources
Isotopic effects of PCE induced by organohalide-respiring bacteria
Environmental Science and Pollution Research, 2017Reductive dechlorination performed by organohalide-respiring bacteria (OHRB) enables the complete detoxification of certain emerging groundwater pollutants such as perchloroethene (PCE). Environmental samples from a contaminated site incubated in a lab-scale microcosm (MC) study enable documentation of such reductive dechlorination processes.
Simon Leitner +4 more
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Organohalide-Respiring Bacteria—An Introduction
2016Organohalide-respiring bacteria (OHRB) “breath” halogenated compounds for energy conservation. This fascinating process has received increasing attention over the last two decades revealing the physiological, biochemical, genomic, and ecological features of this taxonomically diverse bacterial group.
Lorenz Adrian, Frank E. Löffler
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