ArticleCommunications biology2024
The cytoplasmic phosphate level has a central regulatory role in the phosphate starvation response of Caulobacter crescentus.
Article in Communications biology, 2024. 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.
- Polyphosphate synthesis is essential for phosphate and ATP homeostasis during nutrient upshift.Proceedings of the National Academy of Sciences of the United States of America · 2026Article
- Rapid growth phenotype of carbapenem-resistant Enterobacter cloacae: growth fitness, stability, and mechanistic insights.BMC genomics · 2026Article
- Transcriptome analysis ofMicrobiology spectrum · 2026Article
- Host species-specific gene expression by a widespread and flexible chemosynthetic symbiont.The ISME journal · 2026Article
- An Overview of the Mechanisms through Which Plants Regulate ROS Homeostasis under Cadmium Stress.Antioxidants (Basel, Switzerland) · 2024Review
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Authors and funding
5 authors.
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Abstract
In bacteria, the availability of environmental inorganic phosphate is typically sensed by the conserved PhoR-PhoB two-component signal transduction pathway, which uses the flux through the PstSCAB phosphate transporter as a readout of the extracellular phosphate level to control phosphate-responsive genes. While the sensing of environmental phosphate is well-investigated, the regulatory effects of cytoplasmic phosphate are unclear. Here, we disentangle the physiological and transcriptional responses of Caulobacter crescentus to changes in the environmental and cytoplasmic phosphate levels by uncoupling phosphate uptake from the activity of the PstSCAB system, using an additional, heterologously produced phosphate transporter. This approach reveals a two-pronged response of C. crescentus to phosphate limitation, in which PhoR-PhoB signaling mostly facilitates the utilization of alternative phosphate sources, whereas the cytoplasmic phosphate level controls the morphological and physiological adaptation of cells to growth under global phosphate limitation. These findings open the door to a comprehensive understanding of phosphate signaling in bacteria.
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