Azorhizobium caulinodans Chemotaxis Is Controlled by an Unusual Phosphorelay Network.

ABSTRACT: Azorhizobium caulinodans is a nitrogen-fixing bacterium that forms root nodules on its host legume, Sesbania rostrata. This agriculturally significant symbiotic relationship is important in lowland rice cultivation and allows nitrogen fixation under flood conditions. Chemotaxis plays an important role in bacterial colonization of the rhizosphere. Plant roots release chemical compounds that are sensed by bacteria, triggering chemotaxis along a concentration gradient toward the roots. This gives motile bacteria a significant competitive advantage during root surface colonization. Although plant-associated bacterial genomes often encode multiple chemotaxis systems, A. caulinodans appears to encode only one. The che cluster on the A. caulinodans genome contains cheA

SUBMITTER: Kennedy EN 

PROVIDER: S-EPMC8846458 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature