ArticleCurrent genetics2017
The expression of many chemoreceptor genes depends on the cognate chemoeffector as well as on the growth medium and phase.
Article in Current genetics, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed, 19 citations in OpenAlex.
- 1-Aminocyclopropane-1-Carboxylate and Its Chemoreceptor Drive Metabolic Reprogramming to Enhance Chemotactic Rhizocompetence inMicroorganisms · 2026Article
- Role of a single MCP in evolutionary adaptation ofApplied and environmental microbiology · 2025Article
- Bacterial sensor evolved by decreasing complexity.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- AnApplied and environmental microbiology · 2024Article
- Purines enrich root-associated Pseudomonas and improve wild soybean growth under salt stress.Nature communications · 2024Article
- Rhizobial Chemoattractants, the Taste and Preferences of Legume Symbionts.Frontiers in plant science · 2021Review
- Specific Root Exudate Compounds Sensed by Dedicated Chemoreceptors Shape Azospirillum brasilense Chemotaxis in the Rhizosphere.Applied and environmental microbiology · 2020Article
- Oxalic Acid FromFrontiers in microbiology · 2019Article
- Concentration Dependent Effect of Plant Root Exudates on the Chemosensory Systems ofFrontiers in microbiology · 2019Article
- Cellular Stoichiometry of Methyl-Accepting Chemotaxis Proteins in Sinorhizobium meliloti.Journal of bacteriology · 2018Article
- Sensory Repertoire of Bacterial Chemoreceptors.Microbiology and molecular biology reviews : MMBR · 2017Review
- Identification of a Chemoreceptor inFrontiers in microbiology · 2016Article
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Chemoreceptor-based signaling is a major bacterial signal transduction mechanism. Escherichia coli, the traditional model, has five chemoreceptors. Recent genome analyses have shown that many bacteria have a much higher number of chemoreceptors. Pseudomonas putida KT2440 is an alternative model that has 27 chemoreceptors and the cognate chemoeffector is known for many of them. Here, we address the question whether and which factors modulate chemoreceptor gene expression. We report reverse transcriptase quantitative PCR measurements of all KT2440 chemoreceptor genes. Transcript levels of individual chemoreceptors differed largely, namely up to 174-fold between the most and least abundant. The cognate chemoeffectors had three different effects on the expression of their chemoreceptor genes. In some cases, the respective chemoeffectors, shown previously to be C- and/or N-sources, induced the expression. In contrast, for the two inorganic phosphate sensing chemoreceptors, the chemoeffector caused dramatic reduction in expression. For four other receptors, including the three TCA cycle intermediate sensing receptors, the chemoeffector did not cause any significant alterations. In addition, a significant number of receptors were induced in minimal growth medium and in the stationary phase. We show here that environmental cues determine largely chemoreceptor expression. This work will serve as reference for analogous studies in other bacteria.
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