Intervention effectmodel-written summary

Elevated CO2 decreased wheat transpiration.

A claim from [Effect of elevated CO2 concentration on photosynthesis and antioxidative enzyme activities of wheat plant grown under drought condition]. · 2000

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Elevated CO2 decreased wheat transpiration.

Treatment
elevated CO2 concentratione0
Outcome
transpiratione0
Direction
decreasede0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“elevated CO2 concentration obviously enhanced the photosynthesis, stomatal resistance and water use efficiency, but decreased the transpiration of wheat”

✓ located verbatim in the source · abstract, characters 224–376

Title

[Effect of elevated CO2 concentration on photosynthesis and antioxidative enzyme activities of wheat plant grown under drought condition].

X Chen; D Wu; G Wang; et al. PubMed 2000

Other claims from this paper (5)

Record rev-01d521971e3c418272bf0352c5bf9da9a9d9fb463f59b5447c6a475b00f17a53 · schema claims-v0.9 · position 4 in the model’s answer

co2 · physiology: gas exchange · Triticum aestivum (wheat)Positive and negative results

28 papers: 14 positive, 14 negative or no effect

13 papers in the same direction as this claim · 14 in the opposite direction

  1. no effect
    Wheat stomata showed no appreciable response to external carbon dioxide from zero to 0·01 per cent.

    Studies in Stomatal Behaviour · 1954

    Opposite direction

  2. negative
    In wheat, stomatal conductance decreased within a few minutes of once-per-minute pulses of high CO₂.

    Effects of pulses of elevated carbon dioxide concentration on stomatal conductance and photosynthesis in wheat and rice · 2013 · compared with control set point

    Opposite direction

  3. no effect
    Elevated CO2 had no effect on transpiration rate in either cultivar under either water condition.

    Early or late? The role of genotype phenology in determining wheat response to drought under future high atmospheric CO2 levels · 2022

    Opposite direction

  4. negative
    Elevated CO2 reduced GS across all genotypes.

    Identification of key chlorophyll fluorescence parameters as biomarkers for dryland wheat under future climate conditions · 2024

    Opposite direction

  5. no effect
    Elevated CO2 combined with temperature did not significantly change transpiration rate of spring wheat.

    [Effects of drought, CO2 concentration and temperature increasing on photosynthesis rate, evapotranspiration, and water use efficiency of spring wheat]. · 2002

    Opposite direction

  6. negative
    Low CO2 decreased rate of O2 gas exchange.

    Changes in the photosynthetic performance, the activity of enzymes of nitrogen metabolism, and proline content in the leaves of wheat plants after exposure to low CO2 concentration · 2022 · compared with normal CO2 concentration (control)

    Opposite direction

  7. negative
    Transpiration rate in aestivum wheat significantly fell under elevated CO2 plus high temperature versus ambient.

    Response of aestivum and durum wheat varieties to elevated CO2 and temperature under OTC condition · 2023 · compared with ambient

    Opposite direction

  8. negative
    Elevated CO2 significantly decreased wheat stomatal conductance and transpiration rate.

    Interactive Effects of Elevated Carbon Dioxide and Water on the Growth and Development of Winter Wheat · 2013 · compared with ambient carbon dioxide(400μmol·mol-1)

    Opposite direction

19 papers more in this group

See all 28 papers →

Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.