Evidence map›Paper›PMID 22985329›Full record

ArticleBMC microbiology2012

Single cell analysis of Vibrio harveyi uncovers functional heterogeneity in response to quorum sensing signals.

Claudia Anetzberger, Ursula Schell, Kirsten Jung

Abstract read
In one paragraph

Article in BMC microbiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
–field-weighted citation impact
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

21 citing papers in PubMed.

  1. Article
  2. Article
  3. Review
  4. Article
  5. Spatial determinants of quorum signaling in aProceedings of the National Academy of Sciences of the United States of America · 2018
    Article
  6. Article
  7. Article
  8. The 9Frontiers in cellular and infection microbiology · 2018
    Article
  9. Review
  10. Review
  11. Article
  12. Review
  13. Review
  14. Review
  15. Core principles of bacterial autoinducer systems.Microbiology and molecular biology reviews : MMBR · 2015
    Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. Collective decision-making in microbes.Frontiers in microbiology · 2014
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors.

Claudia AnetzbergerMunich Center for integrated Protein Science (CiPSM) at the Department of Biology I, Microbiology, Ludwig-Maximilians-Universität Munich, Großhaderner Str, 2-4, 82152, Martinsried, Germany.
Ursula Schell
Kirsten Jung

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundVibrio harveyi and closely related species are important pathogens in aquaculture. A complex quorum sensing cascade involving three autoinducers controls bioluminescence and several genes encoding virulence factors. Single cell analysis of a V. harveyi population has already indicated intercellular heterogeneity in the production of bioluminescence. This study was undertaken to analyze the expression of various autoinducer-dependent genes in individual cells.

resultsHere we used reporter strains bearing promoter::gfp fusions to monitor the induction/repression of three autoinducer-regulated genes in wild type conjugates at the single cell level. Two genes involved in pathogenesis - vhp and vscP, which code for an exoprotease and a component of the type III secretion system, respectively, and luxC (the first gene in the lux operon) were chosen for analysis. The lux operon and the exoprotease gene are induced, while vscP is repressed at high cell density. As controls luxS and recA, whose expression is not dependent on autoinducers, were examined. The responses of the promoter::gfp fusions in individual cells from the same culture ranged from no to high induction. Importantly, simultaneous analysis of two autoinducer induced phenotypes, bioluminescence (light detection) and exoproteolytic activity (fluorescence of a promoter::gfp fusion), in single cells provided evidence for functional heterogeneity within a V. harveyi population.

conclusionsAutoinducers are not only an indicator for cell density, but play a pivotal role in the coordination of physiological activities within the population.

Indexed as

Quorum SensingSingle-Cell AnalysisArtificial Gene FusionGene Expression Regulation, BacterialGenes, ReporterGreen Fluorescent ProteinsPromoter Regions, GeneticVibrioGreen Fluorescent Proteins

Identifiers

PMID22985329
PMCPMC3511230

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Registered trials

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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.