Steady-state running rate sets the speed and accuracy of accumulation of swimming bacteria.

ABSTRACT: We study the chemotaxis of a population of genetically identical swimming bacteria undergoing run and tumble dynamics driven by stochastic switching between clockwise and counterclockwise rotation of the flagellar rotary system, where the steady-state rate of the switching changes in different environments. Understanding chemotaxis quantitatively requires that one links the measured steady-state switching rates of the rotary system, as well as the directional changes of individual swimming bacteria in a gradient of chemoattractant/repellant, to the efficiency of a population of bacteria in moving up/down the gradient. Here we achieve this by using a probabilistic model, parametrized with our experimental data, and show that the response of a population to the gradient is complex. We find t

SUBMITTER: Voliotis M 

PROVIDER: S-EPMC9515231 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature