Evidence map›Paper›PMID 33464442›Full record

ArticlePhotosynthesis research2021

Evidence for variable chlorophyll fluorescence of photosystem I in vivo.

Ulrich Schreiber, Christof Klughammer

Open access · hybridAbstract readComparative Study
In one paragraph

Article in Photosynthesis research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
2.9field-weighted citation impact, top 8% 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

26 citing papers in PubMed, 46 citations in OpenAlex.

  1. Article
  2. QPhotosynthesis research · 2026
    Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Letter to the Editor.Photosynthetica · 2024
    Article
  11. Letter to the Editor.Photosynthetica · 2024
    Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. Review
  17. Chlorophylls: A Personal Snapshot.Molecules (Basel, Switzerland) · 2022
    Article
  18. Article
  19. Article
  20. Review
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

2 authors at 1 institution in 1 country.

Ulrich SchreiberJulius-Von-Sachs Institut für Biowissenschaften, Universität Würzburg, Julius-von-Sachs Platz 2, 97082, Würzburg, Germany. ulrichschreiber@gmx.de.ORCID http://orcid.org/0000-0002-6408-6662
Christof KlughammerJulius-Von-Sachs Institut für Biowissenschaften, Universität Würzburg, Julius-von-Sachs Platz 2, 97082, Würzburg, Germany.
University of Würzburg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Room temperature fluorescence in vivo and its light-induced changes are dominated by chlorophyll a fluorescence excited in photosystem II, F(II), peaking around 685 nm. Photosystem I fluorescence, F(I), peaking around 730 nm, so far has been assumed to be constant in vivo. Here, we present evidence for significant contributions of F(I) to variable fluorescence in the green unicellular alga Chlorella vulgaris, the cyanobacterium Synechococcus leopoliensis and a light-green ivy leaf. A Multi-Color-PAM fluorometer was applied for measurements of the polyphasic fluorescence rise (O-I

Indexed as

FluorescenceAdaptation, OcularChlorella vulgarisChlorophyll AHederaPhotosystem I Protein ComplexSynechococcusTemperatureChlorophyll APhotosystem I Protein ComplexChlorellaF > 700 nmMULTI-COLOR-PAMPolyphasic fluorescence rise O-I 1-I 2-PRoom temperature fluorescence emissionSynechococcus leopoliensis

Identifiers

PMID33464442
PMCPMC8382641
OpenAlexW3125822076

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.