Concept

Methanosarcina

Publications associées (10)

Microbial hydrogen sinks in the sand-bentonite backfill material for the deep geological disposal of radioactive waste

Rizlan Bernier-Latmani, Manon Frutschi, Nicolas Louis Maurice Jacquemin, Simiao Wang, Camille Aude Rolland, Niels Burzan, Aislinn Ann Boylan

The activity of subsurface microorganisms can be harnessed for engineering projects. For instance, the Swiss radioactive waste repository design can take advantage of indigenous microorganisms to tackle the issue of a hydrogen gas (H2) phase pressure build ...

2024

Exploring the Sources of Unexpected High Methane Concentrations and Fluxes From Alpine Headwater Streams

Amber Joy Ulseth, Sabine Flury McGinnis

The dynamics of methane generation and evasion from well-oxygenated, oligotrophic streams have been traditionally neglected. We estimated evasion of methane and assessed its sources and production pathways using a stable isotope approach in 16 oxygen-rich ...

AMER GEOPHYSICAL UNION2019

Controls on subsurface methane fluxes and shallow gas formation in Baltic Sea sediment (Aarhus Bay, Denmark)

Sabine Flury McGinnis

Shallow gas accumulates in coastal marine sediments when the burial rate of reactive organic matter beneath the sulfate zone is sufficiently high and the methanogenic zone is sufficiently deep. We investigated the controls on methane production and free me ...

Elsevier2016

Identification and characterization of proteins supporting dehalorespiration in Desulfitobacterium hafniense strain TCE1

Laure Prat

Respiration is a fundamental catalytic process in the aerobic and anaerobic energy metabolism of many prokaryotic and most eukaryotic organisms. The major difference between these organisms is that various organic and inorganic substrates can be used to do ...

EPFL2009

TsrE: a sulfur-transferase involved in various anaerobic respiration pathways ?

Christof Holliger, Julien Maillard, Laure Prat

TsrE, a 32kDa sulfur-transferase with two rhodanese domains, was identified as a result of its over-expression during anaerobic tetrachloroethene respiration by the obligate gram-positive anaerobe Desulfitobacterium hafniense. The tsrE gene is part of an o ...

2009

The impact of Co and Ni speciation on methanogenesis in sulfidic media - Biouptake versus metal dissolution

Graciela Gonzalez Gil

The speciation of the trace nutrients Co(II) and Ni(II) in sulfide containing media can control the methanogenic activity of Methanosarcina sp., which is of importance for the optimisation of anaerobic treatment of wastewater containing methanol. To obtain ...

2007

Influence of temperature and high acetate concentrations on methanogenensis in lake sediment slurries

Christof Holliger, Bernhard Wehrli

Methanogenesis from main methane precursors H2/CO2 and acetate was investigated in a temperature range of 2–70 °C using sediments from Lake Baldegg, Switzerland. Psychrophilic, psychrotrophic, mesophilic, and thermophilic methanogenic microbial communities ...

Blackwell Publishing Ltd, Oxford2007

Modeling past atmospheric CO2: Results of a challenge

Jérôme Chappellaz

The deuterium excess of polar ice cores documents past changes in evaporation conditions and moisture origin. New data obtained from the European Project for Ice Coring in Antarctica Dome C East Antarctic ice core provide new insights on the sequence of ev ...

Proceedings of the National Academy of Sciences2005

Microbial growth by a net heat up-take: a calorimetric and thermodynamic study on acetotrophic methanogenesis by Methanosarcina barkeri

Urs von Stockar, Ian William Marison

To answer the intriguing question whether or not endothermic microbial growth exists, and in particular, to verify Heijnen and van Dijken's prediction (1992), acetotrophic methanogen, Methanosarcina barkeri, has been cultivated in a highly sensitive bench- ...

2001

Thermodynamic analysis of growth of Methanobacterium thermoautotrophicum

Urs von Stockar

Growth of Methanobacterium thermoautotrophicum, an anaerobic archaebacterium using methanogenesis as the catabolic pathway, is characterized by large heat prodn. rates, up to 13 W g-1, and low biomass yields, in the order of 0.02 C-mol mol-1 H2 consumed. T ...

1999

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