Results 11 to 20 of about 12,148 (194)

Marine Cold Seep ANME-2/SRB Consortia Produce Their Lipid Biomass From Inorganic Carbon. [PDF]

Environ Microbiol
Lipid‐stable isotope probing (SIP) experiments in Astoria Canyon sediments revealed that both ANME‐2 and SRB primarily assimilate dissolved inorganic carbon (DIC or HCO3‐), not methane, into biomass. SRB‐specific lipids showed eightfold higher DI13C‐assimilation than ANME lipids, suggesting SRB directly assimilate DIC, while ANME assimilate an ...
Stock L, Wegener G, Wang Y, Zander Y, Elvert M.   +4 more
europepmc   +2 more sources

Beyond Methane Oxidation: The Protein Landscape of ANME-2a Reveals an Integrated System for Diazotrophy and Membrane Fortification. [PDF]

Environ Microbiol Rep
A protein interaction network of ANME‐2a uncovers a modular blueprint where core methane oxidation is energetically coupled to nitrogen fixation and membrane lipid biosynthesis. This integrated system explains the archaeon's metabolic autonomy and resilience in its extreme deep‐sea niche.
Silva SSE, de Avila NB, da Silva AW, da Silva LRF, Prado MR, Beppler MA, Dos Santos AR.   +6 more
europepmc   +2 more sources

Millimetre-Scale Stratification of Microbial Communities in Hydrothermal Sediments. [PDF]

Environ Microbiol
Zooming into the millimetre‐scale spatial distribution of organic molecules in hydrothermally impacted sediments using mass spectrometry imaging reveals a distinct lipid zonation with abrupt transitions at critical redox interfaces. This zonation reflects a pronounced stratification of diverse microbial communities and highlights surprisingly ...
Groninga J, Liu W, Wörmer L, Altun J, Teske A, Hinrichs KU.   +5 more
europepmc   +2 more sources

Exploring Energy Conservation in Sulphate-Dependent Anaerobic Methane-Oxidising Consortia Through Metabolic Modelling. [PDF]

Environ Microbiol
This study presents a metabolic model to quantify energy conservation in sulphate‐dependent anaerobic methane oxidation. Results reveal that anaerobic methanotrophic archaea and sulphate‐reducing bacteria exhibit similar ATP yields (YATP), achieving high thermodynamic efficiency (η) but distinct returns on investment (ROI), providing key insights into ...
Bowman G, Jensvold Z, Jin Q.
europepmc   +2 more sources

Genomic Insights into Niche Partitioning across Sediment Depth among Anaerobic Methane-Oxidizing Archaea in Global Methane Seeps

mSystems, 2023
Marine sediments are important methane reservoirs. Methane efflux from the seabed is significantly restricted by anaerobic methanotrophic (ANME) archaea through a process known as anaerobic oxidation of methane (AOM).
Jiawei Chen, Yingdong Li, Cheng Zhong, Zhimeng Xu, Guangyuan Lu, Hongmei Jing, Hongbin Liu   +6 more
doaj   +1 more source

The presence of benzene ring activating CoA ligases for aromatics degradation in the ANaerobic MEthanotrophic (ANME) archaea

Microbiology Spectrum, 2023
Petroleum-source and black carbon-source aromatic compounds are present in the cold seep environments, where ANaerobic MEthanotrophic (ANME) archaea as the dominant microbial community mediates the anaerobic oxidation of methane to produce inorganic and ...
Wei-Wei Liu, Piaopiao Pan, Ning-Yi Zhou
doaj   +1 more source

Deep-branching ANME-1c archaea grow at the upper temperature limit of anaerobic oxidation of methane

Frontiers in Microbiology, 2022
In seafloor sediments, the anaerobic oxidation of methane (AOM) consumes most of the methane formed in anoxic layers, preventing this greenhouse gas from reaching the water column and finally the atmosphere.
David Benito Merino, David Benito Merino, Hanna Zehnle, Hanna Zehnle, Hanna Zehnle, Andreas Teske, Gunter Wegener, Gunter Wegener   +7 more
doaj   +1 more source

Isotopologue Ratios Identify ¹³C-Depleted Biomarkers in Environmental Samples Impacted by Methane Turnover. [PDF]

Rapid Commun Mass Spectrom
ABSTRACT Rationale The stable carbon isotopic composition (δ13C) of individual lipids is of great value in studying carbon cycling. Among those, microbial lipids in sediments impacted by high methane turnover stand out due to their uniquely depleted isotopic fingerprint.
Groninga J, Lipp J, Song M, Hinrichs KU.
europepmc   +2 more sources

Composition and Metabolic Potential of Fe(III)-Reducing Enrichment Cultures of Methanotrophic ANME-2a Archaea and Associated Bacteria

Microorganisms, 2023
The key microbial group involved in anaerobic methane oxidation is anaerobic methanotrophic archaea (ANME). From a terrestrial mud volcano, we enriched a microbial community containing ANME-2a, using methane as an electron donor, Fe(III) oxide ...
Alexander I. Slobodkin, Nataliya M. Ratnikova, Galina B. Slobodkina, Alexandra A. Klyukina, Nikolay A. Chernyh, Alexander Y. Merkel   +5 more
doaj   +1 more source

Electron Acceptor Availability Shapes Anaerobically Methane Oxidizing Archaea (ANME) Communities in South Georgia Sediments

Frontiers in Microbiology, 2021
Anaerobic methane oxidizing archaea (ANME) mediate anaerobic oxidation of methane (AOM) in marine sediments and are therefore important for controlling atmospheric methane concentrations in the water column and ultimately the atmosphere.
Annika Schnakenberg, Annika Schnakenberg, David A. Aromokeye, David A. Aromokeye, Ajinkya Kulkarni, Ajinkya Kulkarni, Lisa Maier, Lea C. Wunder, Lea C. Wunder, Tim Richter-Heitmann, Thomas Pape, Thomas Pape, Petra Pop Ristova, Solveig I. Bühring, Ingrid Dohrmann, Gerhard Bohrmann, Gerhard Bohrmann, Sabine Kasten, Sabine Kasten, Sabine Kasten, Michael W. Friedrich, Michael W. Friedrich   +21 more
doaj   +1 more source