Simultaneous aerobic and anaerobic respiration in hot spring chemolithotrophic bacteria.

ABSTRACT: Aerobic and anaerobic organisms and their functions are spatially or temporally decoupled at scales ranging from individual cells to ecosystems and from minutes to hours. This is due to competition for energy substrates and/or biochemical incompatibility with oxygen (O₂). Here we report a chemolithotrophic Aquificales bacterium, Hydrogenobacter, isolated from a circumneutral hot spring in Yellowstone National Park (YNP) capable of simultaneous aerobic and anaerobic respiration when provided with hydrogen (H₂), elemental sulfur (S⁰), and O₂. Cultivation experiments demonstrated that simultaneous aerobic and anaerobic respiration enhanced growth rates and final cell concentrations when compared to those grown aerobically or anaerobically. Consumpti

SUBMITTER: Keller LM 

PROVIDER: S-EPMC11772811 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature