Evidence map›Paper›PMID 26858197›Full record

ArticleeLife2016

Cyanobacteria use micro-optics to sense light direction.

Nils Schuergers, Tchern Lenn, Ronald Kampmann, Markus V Meissner, Tiago Esteves, Maja Temerinac-Ott, Jan G Korvink, Alan R Lowe, Conrad W Mullineaux, Annegret Wilde

Abstract read
In one paragraph

Article in eLife, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 69 papers.

0numbers the graph read from it
0cells of the map it votes in
69citing 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

69 citing papers in PubMed.

  1. Nonlinear distributed sensing of light patterns leads to perceptual distortions in plants.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  2. Review
  3. From pond to platform: howJournal of bacteriology · 2026
    Review
  4. Algal optics.Physical review. E · 2026
    Article
  5. Review
  6. Review
  7. Engineered bacteria that self-assemble bioglass polysilicate coatings display enhanced light focusing.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  8. Light-regulated chloroplast morphodynamics in a single-celled dinoflagellate.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  9. Cyanobacteriochromes: A Rainbow of Photoreceptors.Annual review of microbiology · 2024
    Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Review
  20. Article

9 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors.

Nils SchuergersInstitute of Biology III, University of Freiburg, Freiburg, Germany.
Tchern LennSchool of Biological and Chemical Sciences, Queen Mary University of London, London, United Kingdom.
Ronald KampmannInstitute of Microstructure Technology, Karlsruhe Institute of Technology, Karlsruhe, Germany.
Markus V MeissnerInstitute of Microstructure Technology, Karlsruhe Institute of Technology, Karlsruhe, Germany.
Tiago EstevesInstituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.
Maja Temerinac-OttFreiburg Institute for Advanced Studies, University of Freiburg, Freiburg, Germany.
Jan G KorvinkInstitute of Microstructure Technology, Karlsruhe Institute of Technology, Karlsruhe, Germany.ORCID http://orcid.org/0000-0003-4354-7295
Alan R LoweLondon Centre for Nanotechnology, London, United Kingdom.ORCID http://orcid.org/0000-0002-0558-3597
Conrad W MullineauxSchool of Biological and Chemical Sciences, Queen Mary University of London, London, United Kingdom.
Annegret WildeInstitute of Biology III, University of Freiburg, Freiburg, Germany.

Funding

Medical Research Council MR/K015826/1
6 · The paper itself

Abstract

Bacterial phototaxis was first recognized over a century ago, but the method by which such small cells can sense the direction of illumination has remained puzzling. The unicellular cyanobacterium Synechocystis sp. PCC 6803 moves with Type IV pili and measures light intensity and color with a range of photoreceptors. Here, we show that individual Synechocystis cells do not respond to a spatiotemporal gradient in light intensity, but rather they directly and accurately sense the position of a light source. We show that directional light sensing is possible because Synechocystis cells act as spherical microlenses, allowing the cell to see a light source and move towards it. A high-resolution image of the light source is focused on the edge of the cell opposite to the source, triggering movement away from the focused spot. Spherical cyanobacteria are probably the world's smallest and oldest example of a camera eye.

Indexed as

LightLocomotionSynechocystisbiophysicsCyanobacteriainfectious diseasemicrobiologyMicro-opticsPhototaxisSignal transductionstructural biologySynechocystis sp PCC6803Thermosynechococcus elongatus

Identifiers

PMID26858197
PMCPMC4758948

What OpenQuestion holds

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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.