Evidence map›Paper›PMID 31015402›Full record

ArticleNature communications2019

Bacterial chemotaxis in a microfluidic T-maze reveals strong phenotypic heterogeneity in chemotactic sensitivity.

M Mehdi Salek, Francesco Carrara, Vicente Fernandez, Jeffrey S Guasto, Roman Stocker

Open access · goldAbstract read
In one paragraph

Article in Nature communications, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed
5.1field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

40 citing papers in PubMed, 102 citations in OpenAlex.

  1. Growth-dependent sensory bet-hedging enhances collective navigation.bioRxiv : the preprint server for biology · 2026
    Article
  2. Article
  3. Automated decision-making by chemical echolocation in active droplets.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  4. Review
  5. Self-generated chemotaxis of mixed cell populations.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  6. Review
  7. Review
  8. Article
  9. Review
  10. Article
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  12. Review
  13. Direct measurement of dynamic attractant gradients reveals breakdown of the Patlak-Keller-Segel chemotaxis model.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  14. Review
  15. Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 3 institutions in 2 countries.

M Mehdi SalekRalph M. Parsons Laboratory, Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
Francesco CarraraRalph M. Parsons Laboratory, Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
Vicente FernandezRalph M. Parsons Laboratory, Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
Jeffrey S GuastoDepartment of Mechanical Engineering, Tufts University, 200 College Avenue, Medford, MA, 02155, USA.
Roman StockerRalph M. Parsons Laboratory, Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA. romanstocker@ethz.ch.ORCID http://orcid.org/0000-0002-3199-0508
Parsons (United States) · USETH Zurich · CHTufts University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Many microorganisms have evolved chemotactic strategies to exploit the microscale heterogeneity that frequently characterizes microbial habitats. Chemotaxis has been primarily studied as an average characteristic of a population, with little regard for variability among individuals. Here, we adopt a classic tool from animal ecology - the T-maze - and implement it at the microscale by using microfluidics to expose bacteria to a sequence of decisions, each consisting of migration up or down a chemical gradient. Single-cell observations of clonal Escherichia coli in the maze, coupled with a mathematical model, reveal that strong heterogeneity in the chemotactic sensitivity coefficient exists even within clonal populations of bacteria. A comparison of different potential sources of heterogeneity reveals that heterogeneity in the T-maze originates primarily from the chemotactic sensitivity coefficient, arising from a distribution of pathway gains. This heterogeneity may have a functional role, for example in the context of migratory bet-hedging strategies.

Indexed as

Models, BiologicalPhenotypeChemotaxisDimethylpolysiloxanesEscherichia coliIntravital MicroscopyMicrofluidic Analytical TechniquesMicroscopy, Phase-ContrastSingle-Cell AnalysisbaysilonDimethylpolysiloxanes

Identifiers

PMID31015402
PMCPMC6478840
OpenAlexW2941073901

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.