Catabolism and interactions of uncultured organisms shaped by eco-thermodynamics in methanogenic bioprocesses.

ABSTRACT:

Background

Current understanding of the carbon cycle in methanogenic environments involves trophic interactions such as interspecies H₂ transfer between organotrophs and methanogens. However, many metabolic processes are thermodynamically sensitive to H₂ accumulation and can be inhibited by H₂ produced from co-occurring metabolisms. Strategies for driving thermodynamically competing metabolisms in methanogenic environments remain unexplored.

Results

To uncover how anaerobes combat this H₂ conflict in situ, we employ metagenomics and metatranscriptomics to revisit a model ecosystem that has inspired many foundational discoveries in anaerobic ecology-methanogenic bioreactors. Through analysis of 17 anaerobic digesters, we recovered 1

SUBMITTER: Nobu MK 

PROVIDER: S-EPMC7382037 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature