Abstract
The toxic effect of copper was evaluated in sunflower plants by means of root elongation, lipid peroxidation and antioxidative enzyme activities. Plants were grown under controlled environmental conditions in hydroponic culture for two weeks and exposed to different copper concentrations for an additional week. Determinations were performed in both roots and leaves. From the results of the root elongation test, a copper concentration of 10 microM was found to be toxic for sunflower plants causing lipid peroxidation and, thus, oxidative stress. Antioxidative enzymes (peroxidase and superoxide dismutase) responded at lower, nontoxic copper concentrations.
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Claims 3
Claim · model-written summary
A copper concentration of 10 microM was toxic to sunflower plants.
- Taxon
- sunflower plants
Helianthus annuuse0 - Treatment
- copper concentration of 10 microMe1
- Outcome
- toxice1
- Value
- 10 microMe1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The toxic effect of copper was evaluated in sunflower plants by means of root elongation, lipid peroxidation and antioxidative enzyme activities.”
e1“From the results of the root elongation test, a copper concentration of 10 microM was found to be toxic for sunflower plants causing lipid peroxidation and, thus, oxidative stress”
Claim · model-written summary
A copper concentration of 10 microM caused lipid peroxidation in sunflower plants.
- Taxon
- sunflower plantsHelianthus annuuse0
- Treatment
- copper concentration of 10 microMe1
- Outcome
- lipid peroxidatione1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The toxic effect of copper was evaluated in sunflower plants by means of root elongation, lipid peroxidation and antioxidative enzyme activities.”
e1“From the results of the root elongation test, a copper concentration of 10 microM was found to be toxic for sunflower plants causing lipid peroxidation and, thus, oxidative stress”
Claim · model-written summary
Peroxidase and superoxide dismutase responded in sunflower roots and leaves at lower, nontoxic copper concentrations.
- Taxon
- sunflower plantsHelianthus annuuse0
- Organ / stage
- roots and leavese3
- Treatment
- lower, nontoxic copper concentrationse2
- Outcome
- peroxidase and superoxide dismutasee2
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The toxic effect of copper was evaluated in sunflower plants by means of root elongation, lipid peroxidation and antioxidative enzyme activities.”
e2“Antioxidative enzymes (peroxidase and superoxide dismutase) responded at lower, nontoxic copper concentrations.”
e3“Determinations were performed in both roots and leaves.”
The same questions in other papers
copper atom · physiology: oxidative · Helianthus annuus (common sunflower)Results differ
3 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- negative
1 paper more in this group
See all 5 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.