Intervention effectmodel-written summary

Elevated CO2 enhanced net photosynthetic rates (Pn), stomatal conductance (Gs), transpiration rates (Tr).

A claim from Responses of leaf gas exchange to high temperature and drought combination as well as re-watering of winter wheat under doubling atmospheric CO2 concentration · 2019

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Elevated CO2 enhanced net photosynthetic rates (Pn), stomatal conductance (Gs), transpiration rates (Tr).

Taxon
winter wheatTriticum aestivumt0
Organ / stage
abaxial leaf surfacee0
Treatment
elevated CO2 concentration (E)e0
Outcome
net photosynthetic rates (Pn), stomatal conductance (Gs), transpiration rates (Tr)e0
Direction
enhancede0

Not reportedMaterialGeneCompoundInteractorInteractor 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 (E) increased the stomatal density, decreased the stomatal width and made the spatial distribution pattern of stomata irregular on the abaxial leaf surface, while enhanced the net photosynthetic rates (Pn), stomatal conductance (Gs), transpiration rates (Tr), and water use efficiency (WUE)”

✓ located verbatim in the source · abstract, characters 657–974
t0

“winter wheat”

✓ located verbatim in the source · title, characters 101–113

Title

Responses of leaf gas exchange to high temperature and drought combination as well as re-watering of winter wheat under doubling atmospheric CO2 concentration

Li-Li GUO; Xi-Xi ZHANG; Li-Hua HAO; et al. ACTA AGRONOMICA SINICA 2019. doi:10.3724/sp.j.1006.2019.81081

Other claims from this paper (9)

Record rev-6887cac7204ef53e849907e29d8719925feca50e992f3a44bb0ec69a71fac98f · schema claims-v0.9 · position 4 in the model’s answer

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

97 papers: 69 positive, 28 negative or no effect

68 papers in the same direction as this claim · 28 in the opposite direction

  1. negative
    Short-term exposure to elevated CO2 diverted photosynthetic reductant from nitrate or nitrite reduction to CO2 fixation in wheat shoots.

    Nitrogen assimilation and growth of wheat under elevated carbon dioxide · 2002

    Opposite direction

  2. negative
    Growth in elevated CO2 reduced Rubisco and Rubisco activase protein content.

    Does ear C sink strength contribute to overcoming photosynthetic acclimation of wheat plants exposed to elevated CO2? · 2011

    Opposite direction

  3. no effect
    Elevated CO2 had no apparent effect on major photosynthetic protein amounts at blade emergence.

    Effects of free‐air CO2 enrichment on the development of the photosynthetic apparatus in wheat, as indicated by changes in leaf proteins · 1995

    Opposite direction

  4. no effect
    Hydroponic wheat did not acclimate photosynthesis to elevated pCO2 under growth-proportional nitrogen, even at a low rate.

    Does a Low Nitrogen Supply Necessarily Lead to Acclimation of Photosynthesis to Elevated CO2? · 1998

    Opposite direction

  5. negative
    Combined elevated CO2 and temperature negatively affected photosynthetic performance of wheat.

    Nitrogen assimilation and transpiration: key processes conditioning responsiveness of wheat to elevated [CO2] and temperature · 2015 · compared with ambient

    Opposite direction

  6. negative
    Elevated carbon dioxide reduced excess Rubisco activity.

    Elevated concentrations of atmospheric CO2 protect against and compensate for O3 damage to photosynthetic tissues of field‐grown wheat · 2000

    Opposite direction

  7. negative
    Whole-plant photosynthetic rate was 8% lower at 2600 micromoles mol-1 CO2 than at ambient CO2.

    Very High CO2Reduces Photosynthesis, Dark Respiration and Yield in Wheat · 1997 · compared with ambient [CO2]

    Opposite direction

  8. no effect
    Elevated CO2 did not acclimate wheat photosynthesis: maximum Rubisco carboxylation rate was similar to ambient CO2 across N treatments.

    Does nitrogen supply affect the response of wheat (Triticum aestivum cv. Hanno) to the combination of elevated CO2 and O3? · 2001 · compared with ambient CO(2)

    Opposite direction

88 papers more in this group

See all 97 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.