Emergence of exopolysaccharides overproducers is linked to environmental spatial structure via redox state
Résumé
The formation of biofilm at the air-liquid interface of a still flask is related to the emergence of exopolysaccharides (EPS) overproducers. These mutants have the ability to remain near the surface, where oxygen is abundant. Yet, it is still unclear what role oxygen plays in cellular metabolism in this condition. A. Besse, M.-C. Groleau and E. Déziel (mSphere e00057-23, 2023 https://doi.org/10.1128/msphere.00057-23) explains that the redox state of cells is key in understanding the emergence of EPS overproducers. They found that the spatial distribution of oxidizing agent (not oxygen specifically) controls the advantage of remaining near the airliquid interface, and hence the advantage that EPS-overproduction confers. All together this research paves the way for a deeper comprehension of the relationship between the environment's spatial structure and population dynamics.
Domaines
Bactériologie
Origine : Fichiers produits par l'(les) auteur(s)
licence : CC BY - Paternité
licence : CC BY - Paternité