Claim · model-written summary
Changes in ascorbate redox state and increased ascorbate-redox enzymes indicate ascorbate over-utilization in Cd and/or O3-treated sunflower.
- Taxon
- sunflower (Helianthus annuus)
Helianthus annuuse0 - Treatment
- Cd(II) and/or O3–treated plantse4
- Compound
- ascorbatee4
- Outcome
- ascorbate over-utilizatione4
- Qualifier
- The changes in ascorbate redox state and the increase in ascorbate-redox enzymese4
Not reportedMaterialGeneOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingDirectionValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on sunflower (Helianthus annuus) metabolism are analysed here”
e4“The changes in ascorbate redox state and the increase in ascorbate-redox enzymes strongly supported an ascorbate over-utilization in Cd(II) and/or O3–treated plants”
Title
R. Di Cagno; L. Guidi; L. De Gara; et al. New Phytologist 2001. doi:10.1046/j.1469-8137.2001.00217.x
Other claims from this paper (9)
- Intervention effect Cd and/or O3 treatment reduced CO2 assimilation rate in sunflower.
- Intervention effect Cd and/or O3 treatment caused no alterations in stomatal conductance and Fv : Fm ratio in sunflower.
- Intervention effect Rubisco activity was significantly reduced in sunflower grown in the presence of cadmium.
- Intervention effect Cd and/or O3 significantly depressed photochemical quenching and the quantum efficiency of PSII in steady-state conditions in sunflower.
- Intervention effect Cd and/or O3 increased nonphotochemical quenching in sunflower.
- Intervention effect Cd and/or O3 increased ascorbate-redox enzymes in sunflower.
- Intervention effect Cd and O3 strongly affected ascorbate metabolism in sunflower.
- Association Lipid peroxidation and protein oxidation increased under pollutant exposure in sunflower, accompanying decreased photosynthesis.
- Association Increased ascorbate-based detoxification did not give complete protection against the oxidative stress of the two pollutants in sunflower.