Non-thermodynamic factors affect competition between thermophilic chemolithoautotrophs from deep-sea hydrothermal vents.

ABSTRACT: Various environmental factors, including H₂ availability, metabolic tradeoffs, optimal growth temperature, stochasticity, and hydrology, were examined to determine if they affect microbial competition between three autotrophic thermophiles. The thiosulfate reducer Desulfurobacterium thermolithotrophum (T_opt72°C) was grown in mono- and coculture separately with the methanogens Methanocaldococcus jannaschii (T_opt82°C) at 72°C and Methanothermococcus thermolithotrophicus (T_opt65°C) at 65°C at high and low H₂ concentrations. Both methanogens showed a metabolic tradeoff shifting from high growth rate-low cell yield at high H₂ concentrations to low growth rate-high cell yield at low H

SUBMITTER: Kubik BC 

PROVIDER: S-EPMC11337833 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature