Lactiplantibacillus plantarum uses ecologically relevant, exogenous quinones for extracellular electron transfer.

ABSTRACT:

Importance

While quinones are essential for respiratory microorganisms, their importance for microbes that rely on fermentation metabolism is not understood. This gap in knowledge hinders our understanding of anaerobic microbial habitats, such in mammalian digestive tracts and fermented foods. We show that Lactiplantibacillus plantarum, a model fermentative lactic acid bacteria species abundant in human, animal, and insect microbiomes and fermented foods, uses multiple exogenous, environmental quinones as electron shuttles for a hybrid metabolism involving EET. Interestingly, quinones both stimulate this metabolism as well as cause oxidative stress when extracellular electron acceptors are absent. We also found that quinone-producing, lactic acid bacteria species commonly en

SUBMITTER: Stevens ET 

PROVIDER: S-EPMC10746273 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature