ArticleJournal of bacteriology2012
ExpR is not required for swarming but promotes sliding in Sinorhizobium meliloti.
Article in Journal of bacteriology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.
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Who cites it
27 citing papers in PubMed.
- Deletion ofApplied and environmental microbiology · 2026Article
- Rhizobial motility preference in root colonization of Medicago truncatula.The New phytologist · 2026Article
- Movement of bacteria in the soil and the rhizosphere.Applied and environmental microbiology · 2025Review
- Diversity and functional features of the root-associated bacteriome are dependent on grapevine susceptibility to Plasmopara viticola.Environmental microbiome · 2025Article
- Article
- Siderophores and competition for iron govern myxobacterial predation dynamics.The ISME journal · 2024Article
- Methods for Studying Swimming and Surface Motilities in Rhizobia.Methods in molecular biology (Clifton, N.J.) · 2024Article
- Article
- Complex extracellular biology drives surface competition during colony expansion in Bacillus subtilis.The ISME journal · 2022Article
- Exopolysaccharides amylovoran and levan contribute to sliding motility in the fire blight pathogen Erwinia amylovora.Environmental microbiology · 2022Article
- Surface Motility Regulation ofInternational journal of molecular sciences · 2022Article
- Frequency modulation of a bacterial quorum sensing response.Nature communications · 2022Article
- Identification of a Novel Pyruvyltransferase UsingJournal of bacteriology · 2021Article
- Exopolysaccharide II Is Relevant for the Survival ofMolecules (Basel, Switzerland) · 2020Article
- Regulation Mediated by N-Acyl Homoserine Lactone Quorum Sensing Signals in the Rhizobium-Legume Symbiosis.Genes · 2018Review
- Assessing Travel Conditions: Environmental and Host Influences On Bacterial Surface Motility.Journal of bacteriology · 2018Article
- AraC-like transcriptional activator CuxR binds c-di-GMP by a PilZ-like mechanism to regulate extracellular polysaccharide production.Proceedings of the National Academy of Sciences of the United States of America · 2017Article
- Staphylococcus aureus forms spreading dendrites that have characteristics of active motility.Scientific reports · 2015Article
- FleQ coordinates flagellum-dependent and -independent motilities in Pseudomonas syringae pv. tomato DC3000.Applied and environmental microbiology · 2015Article
- Biofilm formation assessment in Sinorhizobium meliloti reveals interlinked control with surface motility.BMC microbiology · 2015Article
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4 authors.
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No grant is acknowledged in the PubMed record.
Abstract
Swarming is a mode of translocation dependent on flagellar activity that allows bacteria to move rapidly across surfaces. In several bacteria, swarming is a phenotype regulated by quorum sensing. It has been reported that the swarming ability of the soil bacterium Sinorhizobium meliloti Rm2011 requires a functional ExpR/Sin quorum-sensing system. However, our previous published results demonstrate that strains Rm1021 and Rm2011, both known to have a disrupted copy of expR, are able to swarm on semisolid minimal medium. In order to clarify these contradictory results, the role played by the LuxR-type regulator ExpR has been reexamined. Results obtained in this work revealed that S. meliloti can move over semisolid surfaces using at least two different types of motility. One type is flagellum-independent surface spreading or sliding, which is positively influenced by a functional expR gene mainly through the production of exopolysaccharide II (EPS II). To a lesser extent, EPS II-deficient strains can also slide on surfaces by a mechanism that is at least dependent on the siderophore rhizobactin 1021. The second type of surface translocation shown by S. meliloti is swarming, which is greatly dependent on flagella and rhizobactin 1021 but does not require ExpR. We have extended our study to demonstrate that the production of normal amounts of succinoglycan (EPS I) does not play a relevant role in surface translocation but that its overproduction facilitates both swarming and sliding motilities.
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