Evidence map›Paper›PMID 11788752›Full record

ArticlePlant physiology2002

Responses of photosynthetic electron transport in stomatal guard cells and mesophyll cells in intact leaves to light, CO2, and humidity.

Tracy Lawson, Kevin Oxborough, James I L Morison, Neil R Baker

Open access · bronzeAbstract read
In one paragraph

Article in Plant physiology, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
1.8field-weighted citation impact, top 15% 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

35 citing papers in PubMed, 111 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Characterizing the COPhotosynthetica · 2026
    Article
  5. Article
  6. Article
  7. Microbial-Based Biofungicides Mitigate the Damage Caused byJournal of fungi (Basel, Switzerland) · 2024
    Article
  8. Tools for Measuring Photosynthesis at Different Scales.Methods in molecular biology (Clifton, N.J.) · 2024
    Article
  9. Article
  10. Article
  11. Review
  12. Stomatal Responses to Light, COFrontiers in plant science · 2021
    Article
  13. Article
  14. Role of blue and red light in stomatal dynamic behaviour.Journal of experimental botany · 2020
    Review
  15. Imaging of ChlorophyllFrontiers in plant science · 2020
    Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. Photosynthesis-dependent HNature communications · 2017
    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

4 authors at 1 institution in 1 country.

Tracy LawsonDepartment of Biological Sciences, University of Essex, Colchester, CO4 3SQ United Kingdom.
Kevin Oxborough
James I L Morison
Neil R Baker
University of Essex · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

High-resolution images of the chlorophyll fluorescence parameter Fq'/Fm' from attached leaves of commelina (Commelina communis) and tradescantia (Tradescantia albiflora) were used to compare the responses of photosynthetic electron transport in stomatal guard cell chloroplasts and underlying mesophyll cells to key environmental variables. Fq'/Fm' estimates the quantum efficiency of photosystem II photochemistry and provides a relative measure of the quantum efficiency of non-cyclic photosynthetic electron transport. Over a range of light intensities, values of Fq'/Fm' were 20% to 30% lower in guard cell chloroplasts than in mesophyll cells, and there was a close linear relationship between the values for the two cell types. The responses of Fq'/Fm' of guard and mesophyll cells to changes of CO2 and O2 concentration were very similar. There were similar reductions of Fq'/Fm' of guard and mesophyll cells over a wide range of CO2 concentrations when the ambient oxygen concentration was decreased from 21% to 2%, suggesting that both cell types have similar proportions of photosynthetic electron transport used by Rubisco activity. When stomata closed after a pulse of dry air, Fq'/Fm' of both guard cell and mesophyll showed the same response; with a marked decline when ambient CO2 was low, but no change when ambient CO2 was high. This indicates that photosynthetic electron transport in guard cell chloroplasts responds to internal, not ambient, CO2 concentration.

Indexed as

AlgorithmsCarbon DioxideChlorophyllChloroplastsElectron TransportLightLight-Harvesting Protein ComplexesMagnoliopsidaOxygenPhotosynthesisPhotosynthetic Reaction Center Complex ProteinsPhotosystem II Protein ComplexPlant LeavesWaterCarbon DioxideChlorophyllLight-Harvesting Protein ComplexesOxygenPhotosynthetic Reaction Center Complex ProteinsPhotosystem II Protein ComplexWater

Identifiers

PMID11788752
PMCPMC148943
OpenAlexW2096307894

What OpenQuestion holds

Textmetadata
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.