Communication Dans Un Congrès Année : 2020

Motility and aerotaxis in $Sinorhizobium\ meliloti$, a soil bacterium

Résumé

Aerotaxis is the ability of motile cells to move towards oxygen. Bacteria tracking and in-situ oxygen concentration measurements are used to characterize aerotaxis in Sinorhizobium meliloti, a motile nitrogen-fixing bacterium naturally present in the soil. Aerotaxis takes place in a sealed glass capillary closed at one end with an oxygen-permeable plug. Our results suggest that the oxygen dependence of the aerotactic velocity, ∝ ∇c/c$^2$ , is stronger than the "logarithmic sensing" response (∝ ∇c/c) found in other chemoattractants.

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Dates et versions

hal-04398876 , version 1 (16-01-2024)

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  • HAL Id : hal-04398876 , version 1

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Julien Bouvard, Frederic Moisy, Carine Douarche, Nicolas Busset, Peter Mergaert, et al.. Motility and aerotaxis in $Sinorhizobium\ meliloti$, a soil bacterium. 25th ICTAM Conference - 25th International Congress of Theoretical and Applied Mechanics, Aug 2020, Milan, Italy. ⟨hal-04398876⟩
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