ArticleJournal of bacteriology2006
Role of CheB and CheR in the complex chemotactic and aerotactic pathway of Azospirillum brasilense.
Article in Journal of bacteriology, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
26 citing papers in PubMed, 50 citations in OpenAlex.
- Review
- Plant Growth-Promoting Effect and Complete Genomic Sequence Analysis of the Beneficial RhizosphereMicroorganisms · 2025Article
- Individual bacterial cells can use spatial sensing of chemical gradients to direct chemotaxis on surfaces.Nature microbiology · 2024Article
- Chromosomal gene of hybrid multisensor histidine kinase is involved in motility regulation in the rhizobacterium Azospirillum baldaniorum Sp245 under mechanical and water stress.World journal of microbiology & biotechnology · 2023Article
- Methylation-Independent Chemotaxis Systems Are the Norm for Gastric-ColonizingJournal of bacteriology · 2022Article
- Genome-centric metagenomics reveals insights into the evolution and metabolism of a new free-living group in Rhizobiales.BMC microbiology · 2021Article
- Methylation of PhoP by CheR RegulatesmBio · 2021Article
- ThemSystems · 2021Article
- Chemotaxis and Shorter O-Antigen Chain Length Contribute to the Strong Desiccation Tolerance of a Food-IsolatedFrontiers in microbiology · 2021Article
- Multiple CheY Proteins Control Surface-Associated Lifestyles ofFrontiers in microbiology · 2021Article
- MiST 3.0: an updated microbial signal transduction database with an emphasis on chemosensory systems.Nucleic acids research · 2020Article
- Article
- Multiple CheY Homologs Control Swimming Reversals and Transient Pauses in Azospirillum brasilense.Biophysical journal · 2019Article
- A CAZyme-Rich Genome of a Taxonomically Novel Rhodophyte-Associated Carrageenolytic Marine Bacterium.Marine biotechnology (New York, N.Y.) · 2018Article
- Distinct Domains of CheA Confer Unique Functions in Chemotaxis and Cell Length in Azospirillum brasilense Sp7.Journal of bacteriology · 2017Article
- Azospirillum brasilense Chemotaxis Depends on Two Signaling Pathways Regulating Distinct Motility Parameters.Journal of bacteriology · 2016Article
- Metabolic adaptations of Azospirillum brasilense to oxygen stress by cell-to-cell clumping and flocculation.Applied and environmental microbiology · 2015Article
- High specificity in CheR methyltransferase function: CheR2 of Pseudomonas putida is essential for chemotaxis, whereas CheR1 is involved in biofilm formation.The Journal of biological chemistry · 2013Article
- Article
- Studies of bacterial aerotaxis in a microfluidic device.Lab on a chip · 2012Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
It has previously been reported that the alpha-proteobacterium Azospirillum brasilense undergoes methylation-independent chemotaxis; however, a recent study revealed cheB and cheR genes in this organism. We have constructed cheB, cheR, and cheBR mutants of A. brasilense and determined that the CheB and CheR proteins under study significantly influence chemotaxis and aerotaxis but are not essential for these behaviors to occur. First, we found that although cells lacking CheB, CheR, or both were no longer capable of responding to the addition of most chemoattractants in a temporal gradient assay, they did show a chemotactic response (albeit reduced) in a spatial gradient assay. Second, in comparison to the wild type, cheB and cheR mutants under steady-state conditions exhibited an altered swimming bias, whereas the cheBR mutant and the che operon mutant did not. Third, cheB and cheR mutants were null for aerotaxis, whereas the cheBR mutant showed reduced aerotaxis. In contrast to the swimming bias for the model organism Escherichia coli, the swimming bias in A. brasilense cells was dependent on the carbon source present and cells released methanol upon addition of some attractants and upon removal of other attractants. In comparison to the wild type, the cheB, cheR, and cheBR mutants showed various altered patterns of methanol release upon exposure to attractants. This study reveals a significant difference between the chemotaxis adaptation system of A. brasilense and that of the model organism E. coli and suggests that multiple chemotaxis systems are present and contribute to chemotaxis and aerotaxis in A. brasilense.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.