Results 61 to 70 of about 1,195 (176)

Detection of Organohalide-Respiring Enzyme Biomarkers at a Bioaugmented TCE-Contaminated Field Site

Frontiers in Microbiology, 2019
RNA-based biomarkers have been successfully detected at field sites undergoing in situ bioremediation, but the detection of expressed enzymes is a more direct way to prove activity for a particular biocatalytic process of interest since they provide ...
Gretchen L. W. Heavner, Cresten B. Mansfeldt, Michael J. Wilkins, Carrie D. Nicora, Garrett E. Debs, Elizabeth A. Edwards, Ruth E. Richardson   +6 more
doaj   +1 more source

Linking NrfD/PsrC‐like architecture to energy conservation: Functional residues in the quinone reactive QrcABCD complex of sulfate‐reducing bacteria

Protein Science, Volume 35, Issue 5, May 2026.
Abstract The QrcABCD quinone reductase complex is an electrogenic complex present in sulfate‐reducing bacteria of the Desulfobacterota phylum. It operates as a cytochrome c3:menaquinone oxidoreductase involved in electron transfer from periplasmic hydrogen or formate oxidation to the menaquinone (MK) pool.
Gonçalo Manteigas, Teresa Catarino, João B. Vicente, Américo G. Duarte, Inês A. C. Pereira   +4 more
wiley   +1 more source

Inferring community dynamics of organohalide-respiring bacteria in chemostats by covariance ofrdhAgene abundance [PDF]

FEMS Microbiology Ecology, 2013
We have developed a novel approach to identifying and quantifying closely related organohalide-respiring bacteria. Our approach made use of the unique genomic associations of specific reductive dehalogenase subunit A encoding genes (rdhA) that exist in known strains of Dehalococcoides mccartyi and Desulfitobacterium and the distinguishing covariance ...
Ian P G, Marshall, Mohammad F, Azizian, Lewis, Semprini, Alfred M, Spormann   +3 more
openaire   +2 more sources

Membrane-less bioelectrochemical reactor for the treatment of groundwater contaminated by toluene and trichloroethene [PDF]

, 2022
To address the ever-growing environmental problem of groundwater contamination, microbial electrochemical technologies (METs) are being studied as promising substitutes for traditional remediation techniques. Among their many advantages, they possess the
Aulenta F., De Laurentiis C., Resitano M., Tucci M., Viggi C. C.   +4 more
core   +1 more source

Acetylene Fuels TCE Reductive Dechlorination by Defined Dehalococcoides/Pelobacter Consortia. [PDF]

, 2017
Acetylene (C2H2) can be generated in contaminated groundwater sites as a consequence of chemical degradation of trichloroethene (TCE) by in situ minerals, and C2H2 is known to inhibit bacterial dechlorination. In this study, we show that while high C2H2 (
Alvarez-Cohen, Lisa, Baesman, Shaun M, Gushgari, Sara, Landers, Abigail A, Liu, Tong, Mao, Xinwei, Oremland, Ronald S   +6 more
core   +2 more sources

Cobalamin‐Dependent Aryl Methyl Ether O‐Demethylases: Promising Enzymes for Biocatalytic Applications from Lignin Valorization to Organic Synthesis

ChemCatChem, Volume 17, Issue 21, November 10, 2025.
Cobalamin‐dependent aryl methyl ether O‐demethylases have high potential for biocatalytic applications, including lignin valorization and synthetic chemistry. In this review, we provide a detailed overview of such O‐demethylase systems identified to date from various microorganisms, including their mechanism, substrate scope and selectivity, and ...
Niels Krabbe Johnsen, Santipap Chaiyasarn, Zheng Guo, Jaehong Han, Bekir Engin Eser   +4 more
wiley   +1 more source

Effect of Sea Water Inundation on CO2 and CH4 Production of Thawing Coastal Permafrost Near Utqiaġvik, Alaska

Permafrost and Periglacial Processes, Volume 36, Issue 4, Page 787-802, October/December 2025.
ABSTRACT Rising sea levels and changing marine dynamics are increasing the inundation of previously terrestrial permafrost, accelerating thaw and altering microbial carbon cycling. On the Arctic Coastal Plain of Alaska, permafrost features like drained lake basins (DLBs) and uplands (ULs), offer distinct redox conditions and formation histories that ...
Madina Lucia Dolle, Mélissa Laurent, Fabian Seemann, Jörg Schaller, Maren Jenrich, Jens Strauss, Claire Treat   +6 more
wiley   +1 more source

Microbiome dynamics of a polychlorobiphenyl (PCB) historically contaminated marine sediment under conditions promoting reductive dechlorination

Frontiers in Microbiology, 2016
The toxicity of polychlorinated biphenyls (PCB) can be efficiently reduced in contaminated marine sediments through the reductive dechlorination process lead by anaerobic organohalide bacteria.
Bruna Matturro, Carla Ubaldi, Simona Rossetti   +2 more
doaj   +1 more source

Metagenomic- and Cultivation-Based Exploration of Anaerobic Chloroform Biotransformation in Hypersaline Sediments as Natural Source of Chloromethanes

Microorganisms, 2020
Chloroform (CF) is an environmental contaminant that can be naturally formed in various environments ranging from forest soils to salt lakes. Here we investigated CF removal potential in sediments obtained from hypersaline lakes in Western Australia ...
Peng Peng, Yue Lu, Tom N.P. Bosma, Ivonne Nijenhuis, Bart Nijsse, Sudarshan A. Shetty, Alexander Ruecker, Alexander Umanets, Javier Ramiro-Garcia, Andreas Kappler, Detmer Sipkema, Hauke Smidt, Siavash Atashgahi   +12 more
doaj   +1 more source

Influence of Plant Species and De‐Icing Salt on Microbial Communities in Bioretention

Environmental Microbiology Reports, Volume 17, Issue 5, October 2025.
Plant species shape bioretention bacterial and fungal communities and their associated functions, which drive system efficiency. These results underscore the importance of plant selection when designing bioretention systems. Moreover, the communities were preserved or recovered within 5 months after the exposure to NaCl levels typical of spring runoff.
Henry Beral, Jacques Brisson, Margit Kõiv‐Vainik, Joan Laur, Danielle Dagenais   +4 more
wiley   +1 more source