Claim · model-written summary
Elevated CO2 exacerbated decreases in %N and %P, and hence food quality, during drought.
- Taxon
- Barley
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Hordeum vulgaree0 - Treatment
- Elevated CO 2e1
- Outcome
- decreases in %N and %Pe1
- Direction
- exacerbatede1
- Qualifier
- during droughte1
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
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Verbatim
e0“Barley ( Hordeum vulgare )”
e1“Elevated CO 2 exacerbated decreases in %N and %P, and hence food quality, during drought”
Title
Deepesh R. Bista; Scott A. Heckathorn; Dileepa M. Jayawardena; et al. American Journal of Botany 2020. doi:10.1002/ajb2.1542
Other claims from this paper (10)
- Intervention effect Elevated CO2 decreased the impact of drought on barley biomass.
- Intervention effect Drought decreased tissue N and P concentrations (%N and %P) in barley in most cases.
- Intervention effect Elevated CO2 decreased tissue N and P concentrations (%N and %P) in barley in most cases.
- Observation The effects of drought and elevated CO2 on %N and %P were additive for shoots.
- Intervention effect Root N- and P-uptake rates were strongly decreased by drought.
- Intervention effect Root N- and P-uptake rates were not significantly affected by elevated CO2.
- Intervention effect Drought upregulated NRT1 (NO3 transporter) and AMT1 (NH4 transporter) per unit total root protein, averaged across treatments.
- Intervention effect High CO2 upregulated NRT1 (NO3 transporter) and AMT1 (NH4 transporter) per unit total root protein, averaged across treatments.
- Intervention effect Only drought increased PHT1 (P transporter) concentration.
- Mechanism Despite increased concentrations of nutrient-uptake proteins in roots, nutrient uptake was limited by other factors.