Biased reorientation in the chemotaxis of peritrichous bacteria Salmonella enterica serovar Typhimurium.

ABSTRACT: Many kinds of peritrichous bacteria that repeat runs and tumbles by using multiple flagella exhibit chemotaxis by sensing a difference in the concentration of the attractant or repellent between two adjacent time points. If a cell senses that the concentration of an attractant has increased, their flagellar motors decrease the switching frequency from counterclockwise to clockwise direction of rotation, which causes a longer run in swimming up the concentration gradient than swimming down. We investigated the turn angle in tumbles of peritrichous bacteria swimming across the concentration gradient of a chemoattractant because the change in the switching frequency in the rotational direction may affect the way tumbles. We tracked several hundreds of runs and tumbles of single cells of Salmo

SUBMITTER: Nakai T 

PROVIDER: S-EPMC8390861 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature