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• W2950806807 abstract "Abstract Information processing in the mammalian brain relies on a careful regulation of the mem-brane potential dynamics of its constituent neurons, which propagates across the neuronal tissue via electrical signalling. We recently reported the existence of electrical signalling in a much simpler organism, the bacterium Bacillus subtilis . In dense bacterial communi-ties known as biofilms, nutrient-deprived B. subtilis cells in the interior of the colony use electrical communication to transmit stress signals to the periphery, which interfere with the growth of peripheral cells and reduce nutrient consumption, thereby relieving stress from the interior. Here we explicitly address the interplay between metabolism and elec-trophysiology in bacterial biofilms, by introducing a spatially-extended mathematical model that combines the metabolic and electrical components of the phenomenon in a discretised reaction-diffusion scheme. The model is experimentally validated by environmental and ge-netic perturbations, and confirms that metabolic stress is transmitted through the bacterial population via a potassium wave. Interestingly, this behaviour is reminiscent of cortical spreading depression in the brain, characterised by a wave of electrical activity mediated by potassium diffusion that has been linked to various neurological disorders, calling for future studies on the evolutionary link between the two phenomena." @default.
• W2950806807 created "2019-06-27" @default.
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• W2950806807 date "2019-02-18" @default.
• W2950806807 modified "2023-10-18" @default.
• W2950806807 title "Metabolic basis of brain-like electrical signalling in bacterial communities" @default.
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• W2950806807 doi "https://doi.org/10.1101/553305" @default.
• W2950806807 hasPublicationYear "2019" @default.
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