ArticleBiophysical journal2012
Bacterial thermotaxis by speed modulation.
Article in Biophysical journal, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.
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Who cites it
21 citing papers in PubMed.
- Physics of microbial taxis and behaviours in response to various physical stimuli.Philosophical transactions. Series A, Mathematical, physical, and engineering sciences · 2025Review
- Extant life detection using label-free video microscopy in analog aquatic environments.PloS one · 2025Article
- Bioinspired and Biomimetic Nanomedicines for Targeted Cancer Therapy.Pharmaceutics · 2022Review
- Microfluidic devices for studying bacterial taxis, drug testing and biofilm formation.Microbial biotechnology · 2022Review
- Quantification of Motility inFrontiers in microbiology · 2022Article
- Microrheology reveals microscale viscosity gradients in planktonic systems.Proceedings of the National Academy of Sciences of the United States of America · 2021Article
- Aggregation Temperature of Escherichia coli Depends on Steepness of the Thermal Gradient.Biophysical journal · 2020Article
- A Factor Produced byBiomolecules · 2020Article
- A new ecology-on-a-chip microfluidic platform to study interactions of microbes with a rising oil droplet.Scientific reports · 2019Article
- Spatial self-organization resolves conflicts between individuality and collective migration.Nature communications · 2018Article
- Microfluidic Devices Developed for and Inspired by Thermotaxis and Chemotaxis.Micromachines · 2018Review
- Autonomous bacterial nanoswimmers target cancer.Journal of controlled release : official journal of the Controlled Release Society · 2017Article
- Interplay of chemical and thermal gradient on bacterial migration in a diffusive microfluidic device.Biomicrofluidics · 2017Article
- Putting life on ice: bacteria that bind to frozen water.Journal of the Royal Society, Interface · 2016Article
- The Role of Adaptation in Bacterial Speed Races.PLoS computational biology · 2016Article
- Enhancement of Swimming Speed Leads to a More-Efficient Chemotactic Response to Repellent.Applied and environmental microbiology · 2016Article
- Variation of swimming speed enhances the chemotactic migration of Escherichia coli.Systems and synthetic biology · 2015Article
- Precision and variability in bacterial temperature sensing.Biophysical journal · 2015Article
- Behaviors and strategies of bacterial navigation in chemical and nonchemical gradients.PLoS computational biology · 2014Article
- Switching of Swimming Modes in Magnetospirillium gryphiswaldense.Biophysical journal · 2014Article
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Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Naturally occurring gradients often extend over relatively long distances such that their steepness is too small for bacteria to detect. We studied the bacterial behavior in such thermal gradients. We find that bacteria migrate along shallow thermal gradients due to a change in their swimming speed resulting from the effect of temperature on the intracellular pH, which also depends on the chemical environment. When nutrients are scarce in the environment the bacteria's intracellular pH decreases with temperature. As a result, the swimming speed of the bacteria decreases with temperature, which causes them to slowly drift toward the warm end of the thermal gradient. However, when serine is added to the medium at concentrations >300 μM, the intracellular pH increases causing the swimming speed to increase continuously with temperature, and the bacteria to drift toward the cold end of the temperature gradient. This directional migration is not a result of bacterial thermotaxis in the classical sense, because the steepness of the gradients applied is below the sensing threshold of bacteria. Nevertheless, our results show that the directional switch requires the presence of the bacterial sensing receptors. This seems to be due to the involvement of the receptors in regulating the intracellular pH.
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