Pyruvate-dependent growth of Methanosarcina acetivorans.

ABSTRACT: Methanogenesis is a key step during anaerobic biomass degradation. Methanogenic archaea (methanogens) are the only organisms coupling methanogenic substrate conversion to energy conservation. The range of substrates utilized by methanogens is limited, with acetate and H₂+CO₂ being the ecologically most relevant. The only single methanogenic energy substrate containing more carbon-carbon bonds than acetate is pyruvate. Only the aggregate-forming, freshwater methanogen Methanosarcina barkeri Fusaro was shown to grow on this compound. Here, the pyruvate-utilizing capabilities of the single-celled, marine Methanosarcina acetivorans were addressed. Robust pyruvate-dependent, methanogenic, growth could be established by omitting CO₂ from the growth

SUBMITTER: Richter M 

PROVIDER: S-EPMC10882976 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature