Evidence map›Paper›PMID 28808007›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2017

Early photosynthetic eukaryotes inhabited low-salinity habitats.

Patricia Sánchez-Baracaldo, John A Raven, Davide Pisani, Andrew H Knoll

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 120 papers.

0numbers the graph read from it
0cells of the map it votes in
120citing 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

120 citing papers in PubMed.

  1. Review
  2. Environmental phylogenetics supports a steady diversification of crown eukaryotes starting from the mid-Proterozoic.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Genomes of NBMC genomics · 2026
    Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. On the non-oxygenic origins of thylakoids.Communications biology · 2025
    Review
  14. Article
  15. Article
  16. A diverse Palaeoproterozoic microbial ecosystem implies early eukaryogenesis.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025
    Article
  17. Exploring productivity hotspots in the Precambrian biosphere.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025
    Review
  18. Dating the Origin and Spread of Plastids and Chromatophores.International journal of molecular sciences · 2025
    Article
  19. Article
  20. Ecosystem relocation on Snowball Earth: Polar-alpine ancestry of the extant surface biosphere?Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article

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

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors.

Patricia Sánchez-BaracaldoSchool of Geographical Sciences, University of Bristol, Bristol BS8 1SS, United Kingdom; p.sanchez-baracaldo@bristol.ac.uk.ORCID 0000-0002-5216-2664
John A RavenDivision of Plant Science, University of Dundee at the James Hutton Institute, Dundee DD2 5DA, United Kingdom.
Davide PisaniSchool of Biological Sciences, University of Bristol, Bristol BS8 1TH, United Kingdom.
Andrew H KnollDepartment of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The early evolutionary history of the chloroplast lineage remains an open question. It is widely accepted that the endosymbiosis that established the chloroplast lineage in eukaryotes can be traced back to a single event, in which a cyanobacterium was incorporated into a protistan host. It is still unclear, however, which Cyanobacteria are most closely related to the chloroplast, when the plastid lineage first evolved, and in what habitats this endosymbiotic event occurred. We present phylogenomic and molecular clock analyses, including data from cyanobacterial and chloroplast genomes using a Bayesian approach, with the aim of estimating the age for the primary endosymbiotic event, the ages of crown groups for photosynthetic eukaryotes, and the independent incorporation of a cyanobacterial endosymbiont by

Indexed as

Bayes TheoremBiological EvolutionChlorophytaChloroplastsCyanobacteriaEcosystemEukaryotaEvolution, MolecularGenome, ChloroplastOrigin of LifePhotosynthesisPhylogenyPhytoplanktonPlastidsRhodophytaSalinitychloroplastCyanobacteriaphotosynthetic eukaryotesphylogenomicsrelaxed molecular clock

Identifiers

PMID28808007
PMCPMC5603991

What OpenQuestion holds

Textmetadata
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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.