Results 61 to 70 of about 134,738 (300)

Archaea catalyze iron-dependent anaerobic oxidation of methane [PDF]

Proceedings of the National Academy of Sciences, 2016
Significance Carbon and nitrogen cycles have been altered dramatically by human activities. Methane-producing (methanogenic) and methane-consuming (methanotrophic) microorganisms control the emission of methane, one of the most potent greenhouse gases, to the atmosphere.
Ettwig, Katharina F., Zhu, Baoli, Speth, Daan, Keltjens, Jan T., Jetten, Mike S. M., Kartal, Boran   +5 more
openaire   +4 more sources

Anaerobic oxidation of methane: an “active” microbial process [PDF]

MicrobiologyOpen, 2014
AbstractThe anaerobic oxidation of methane (AOM) is an important sink of methane that plays a significant role in global warming. AOM was first found to be coupled with sulfate reduction and mediated by anaerobic methanotrophic archaea (ANME) and sulfate‐reducing bacteria (SRB).
Cui, Mengmeng, Ma, Anzhou, Qi, Hongyan, Zhuang, Xuliang, Zhuang, Guoqiang   +4 more
openaire   +2 more sources

Methyl (Alkyl)-Coenzyme M Reductases: Nickel F-430-Containing Enzymes Involved in Anaerobic Methane Formation and in Anaerobic Oxidation of Methane or of Short Chain Alkanes

Biochemistry, 2019
Methyl-coenzyme M reductase (MCR) catalyzes the methane-forming step in methanogenic archaea. The active enzyme harbors the nickel(I) hydrocorphin coenzyme F-430 as a prosthetic group and catalyzes the reversible reduction of methyl-coenzyme M (CH3–S-CoM)
R. Thauer
semanticscholar   +1 more source

A Critical Look at the Combined Use of Sulfur and Oxygen Isotopes to Study Microbial Metabolisms in Methane-Rich Environments

Frontiers in Microbiology, 2018
Separating the contributions of anaerobic oxidation of methane and organoclastic sulfate reduction in the overall sedimentary sulfur cycle of marine sediments has benefited from advances in isotope biogeochemistry.
Gilad Antler, Gilad Antler, Gilad Antler, André Pellerin   +3 more
doaj   +1 more source

Light-Dependent Aerobic Methane Oxidation Reduces Methane Emissions from Seasonally Stratified Lakes. [PDF]

PLoS ONE, 2015
Lakes are a natural source of methane to the atmosphere and contribute significantly to total emissions compared to the oceans. Controls on methane emissions from lake surfaces, particularly biotic processes within anoxic hypolimnia, are only partially ...
Kirsten Oswald, Jana Milucka, Andreas Brand, Sten Littmann, Bernhard Wehrli, Marcel M M Kuypers, Carsten J Schubert   +6 more
doaj   +1 more source

Multiple Groups of Methanotrophic Bacteria Mediate Methane Oxidation in Anoxic Lake Sediments

Frontiers in Microbiology, 2022
Freshwater lakes represent an important source of the potent greenhouse gas methane (CH4) to the atmosphere. Methane emissions are regulated to large parts by aerobic (MOx) and anaerobic (AOM) oxidation of methane, which are important CH4 sinks in lakes.
Guangyi Su, Jakob Zopfi, Helge Niemann, Helge Niemann, Helge Niemann, Moritz F. Lehmann   +5 more
doaj   +1 more source

Nitrate-Dependent Iron Oxidation: A Potential Mars Metabolism [PDF]

, 2018
This work considers the hypothetical viability of microbial nitrate-dependent Fe2+ oxidation (NDFO) for supporting simple life in the context of the early Mars environment.
Abramov, Amils, Anand, Arevalo, Arnold, Arvidson, Bauermeister, Benz, Bibring, Bridges, Bridges, Bruce, Busigny, Byrne-Bailey, Cabrol, Canfield, Carlson, Carlson, Carr, Chakraborty, Chakraborty, Changela, Charlou, Chassefière, Chastain, Chaudhuri, Chevrier, Cockell, Cockell, Cockell, Comeau, Czaja, Dartnell, Edwards, Edwards, Edwards, Ehlmann, Ehlmann, Ehlmann, Ehrenreich, Emerson, Emerson, Emerson, Etique, Ettwig, Fassett, Filiberto, Fisk, Formisano, Fowler, Fox, Fox, Fox-Powell, Frydenvang, Gauger, Gendrin, Glavin, Grady, Gronstal, Grotzinger, Grotzinger, Hafenbradl, Hecht, Hedrich, Hicks, Hoefen, Hoehler, Hoppert, Hurowitz, Ilbert, Ionescu, Irwin, Jakosky, Jepsen, Johnson, Kappler, Kappler, Kappler, King, Kish, Klueglein, Klueglein, Konhauser, Konn, Kounaves, Kumaraswamy, Lack, Lalonde, Lanza, Laufer, Lopez-Reyes, Lovley, Lovley, Madigan, Mahaffy, Malin, Mangold, Manning, Martin, Martín-Torres, Marzo, McSween, McSween, Michalski, Millero, Ming, Ming, Miot, Miot, Miot, Miot, Miot, Miot, Miot, Miot, Mirvaux, Montoya, Morgan, Morris, Morris, Morris, Muehe, Myers, Nachon, Navarro-González, Nealson, Nie, Nixon, Nixon, Nixon, Oren, Osinski, Palucis, Pantke, Parnell, Pirajno, Popa, Raghoebarsing, Raiswell, Ramirez, Rampe, Rampe, Reimers, Revsbech, Roden, Santelli, Schieber, Schuerger, Schwenzer, Schwenzer, Schädler, Sephton, Sholes, Smith, Smith, Squyres, Squyres, Squyres, Steele, Stern, Stern, Stevens, Straub, Straub, Straub, Strohm, Summers, Summers, Summers, Sutter, Toporski, Tosca, Tosca, Tuff, Vaniman, Visscher, Wacey, Weber, Weber, Weber, Webster, Welhan, Wheat, Williams, Yen, Yen   +185 more
core   +4 more sources

Anaerobic Methane Oxidation in a Landfill-Leachate Plume [PDF]

Environmental Science & Technology, 2002
The alluvial aquifer adjacent to Norman Landfill, OK, provides an excellent natural laboratory for the study of anaerobic processes impacting landfill-leachate contaminated aquifers. We collected groundwaters from a transect of seven multilevel wells ranging in depth from 1.3 to 11 m that were oriented parallel to the flow path.
Ethan L, Grossman, Luis A, Cifuentes, Isabelle M, Cozzarelli   +2 more
openaire   +2 more sources

Subsurface A-site vacancy activates lattice oxygen in perovskite ferrites for methane anaerobic oxidation to syngas

Nature Communications
Tuning the oxygen activity in perovskite oxides (ABO3) is promising to surmount the trade-off between activity and selectivity in redox reactions. However, this remains challenging due to the limited understanding in its activation mechanism.
Jiahui He, Tengjiao Wang, Xueqian Bi, Yubo Tian, Chuande Huang, Weibin Xu, Yue Hu, Zhen Wang, Bo Jiang, Yuming Gao, Yanyan Zhu, Xiaodong Wang   +11 more
semanticscholar   +1 more source

Comparative Analysis of Root Microbiomes of Rice Cultivars with High and Low Methane Emissions Reveals Differences in Abundance of Methanogenic Archaea and Putative Upstream Fermenters. [PDF]

, 2020
Rice cultivation worldwide accounts for ∼7 to 17% of global methane emissions. Methane cycling in rice paddies is a microbial process not only involving methane producers (methanogens) and methane metabolizers (methanotrophs) but also other microbial ...
Eason, Shane, Edwards, Joseph, Liechty, Zachary, Mikhail, David, Nguyen, Bao, Phillips, Gregory, Santos-Medellín, Christian, Sundaresan, Venkatesan   +7 more
core   +1 more source