The motility and chemosensory systems of Rhizobium leguminosarum, their role in symbiosis, and link to PTS^Ntr regulation.

ABSTRACT: Motility and chemotaxis are crucial processes for soil bacteria and plant-microbe interactions. This applies to the symbiotic bacterium Rhizobium leguminosarum, where motility is driven by flagella rotation controlled by two chemotaxis systems, Che1 and Che2. The Che1 cluster is particularly important in free-living motility prior to the establishment of the symbiosis, with a che1 mutant delayed in nodulation and reduced in nodulation competitiveness. The Che2 system alters bacteroid development and nodule maturation. In this work, we also identified 27 putative chemoreceptors encoded in the R. leguminosarum bv. viciae 3841 genome and characterized its motility in different growth conditions. We describe a metabolism-based taxis system in rhizobia that acts at high concentrations of dicarb

SUBMITTER: Aroney STN 

PROVIDER: S-EPMC7617929 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature