Séminaire PMMH - Jacques Fattaccioli (PASTEUR, ENS)

Vendredi 15 mars de 11h00 à 12h00 - Salle réunion PMMH 1

Bacteria on high fat diets cooperate to stay fit

During the consumption of alkanes, Alcanivorax borkumensis, a bacteria commonly found
in oil spill areas, form a biofilm around oil droplets to consume them. The role this plays
during degradation remains unclear. Using in-situ microfluidic tracking, we identify a shift
in biofilm morphology that depends on adaptation to oil consumption : longer exposure
leads to the appearance of dendritic biofilms optimized for oil consumption effected
through tubulation of the interface at localized defects in the interfacial cell ordering. To
capture the full phenomenology, we developed a model that elucidates biofilm
morphology, linking tubulation to decreased interfacial tension and increased cell

Article DOI : DOI:10.1126/science.adf3345