ArticleBMC microbiology2003
Characterization of the nodulation plasmid encoded chemoreceptor gene mcpG from Rhizobium leguminosarum.
Article in BMC microbiology, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Why are rhizobial symbiosis genes mobile?Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2022Article
- Chromium(VI) Toxicity in Legume Plants: Modulation Effects of Rhizobial Symbiosis.BioMed research international · 2018Review
- Chemotaxis signaling systems in model beneficial plant-bacteria associations.Plant molecular biology · 2016Review
- Sensing and adhesion are adaptive functions in the plant pathogenic xanthomonads.BMC evolutionary biology · 2011Article
- Comparative metaproteomic analysis on consecutively Rehmannia glutinosa-monocultured rhizosphere soil.PloS one · 2011Article
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Authors and funding
4 authors.
Funding
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Abstract
backgroundIn general, chemotaxis in Rhizobium has not been well characterized. Methyl accepting chemotaxis proteins are sensory proteins important in chemotaxis of numerous bacteria, but their involvement in Rhizobium chemotaxis is unclear and merits further investigation.
resultsA putative methyl accepting chemotaxis protein gene (mcpG) of Rhizobium leguminosarum VF39SM was isolated and characterized. The gene was found to reside on the nodulation plasmid, pRleVF39d. The predicted mcpG ORF displayed motifs common to known methyl-accepting chemotaxis proteins, such as two transmembrane domains and high homology to the conserved methylation and signaling domains of well-characterized MCPs. Phenotypic analysis of mcpG mutants using swarm plates did not identify ligands for this putative receptor. Additionally, gene knockouts of mcpG did not affect a mutant strain's ability to compete for nodulation with the wild type. Notably, mcpG was found to be plasmid-encoded in all strains of R. leguminosarum and R. etli examined, though it was found on the nodulation plasmid only in a minority of strains.
conclusionsBased on sequence homology R. leguminosarum mcpG gene codes for a methyl accepting chemotaxis protein. The gene is plasmid localized in numerous Rhizobium spp. Although localized to the sym plasmid of VF39SM mcpG does not appear to participate in early nodulation events. A ligand for McpG remains to be found. Apparent McpG orthologs appear in a diverse range of proteobacteria. Identification and characterization of mcpG adds to the family of mcp genes already identified in this organism.
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