Saturn’s icy moon Enceladus features chemical signatures consistent with an alkaline soda ocean with H2 production via hydrothermal water-rock reactions. Chemolithoautotrophic methanogenesis is thermo...

Microbial methanogenesis converts up to 19% of the carbon dioxide injected into an oil field to methane, suggesting that microbial methanogenesis may be a globally important subsurface process.

Saturn’s icy moon Enceladus features chemical signatures consistent with an alkaline soda ocean with H2 production via hydrothermal water-rock reactions. Chemolithoautotrophic methanogenesis is thermo...

Acetate produced by methanogens from captured methane and carbon dioxide can be converted efficiently to ethanol, demonstrated by lab experiments on the engineered methanogen Methanosarcina acetivoran...

In methanogenic communities, two main pathways drive methanogenesis: acetoclastic methanogenesis, which converts acetate into CH4 and CO2, and hydrogenotrophic methanogenesis, which reduces CO2 with H...

Abstract. Microbial methanogenesis is a major contributor to global warming, and methane fluxes represent a loss of energy and electrons from industrial ec

Understanding archaeal metabolic gene regulation is technically challenging due to the difficulty of measuring gene expression dynamics in individual archaeal cells. Here, Dong et al. develop a method...

Methanogenesis is an anaerobic, energy-conserving metabolism that converts CO2, acetate, and methylated compounds to methane, constituting a key terminal ste...

As key players in anoxic environments, methanogenic archaea account for the vast majority of biogenic methane emissions and play important roles during organic matter mineralization. Growing evidence indicates potential for broader ecological roles beyond methanogenesis. This review summarizes the physiology of biogeochemically relevant transformations of iron minerals, humic acid, biochar, and toxic heavy metals/metalloids. We examine how methanogenic archaea couple carbon cycling with other element cycles through methanogenic pathways and electron transfer processes. We also discuss known and potential molecular mechanisms that underlie these interactions. Furthermore, we highlight the discovery of the reversal of methanogenesis driven by extracellular electron transfer and its potential for methane bioconversion technologies. This work underscores the physiological versatility of methanogenic archaea, suggesting their diverse roles in biogeochemical cycles.

Saturn’s icy moon Enceladus features chemical signatures consistent with an alkaline soda ocean with H2 production via hydrothermal water-rock reactions. Chemolithoautotrophic methanogenesis is thermodynamically favorable under these conditions, but it ...

Microorganisms employ inorganic polyphosphate (polyP) as an ancient strategy for energy and phosphate storage, yet its physiological roles in metha...