Claim · model-written summary
Manganese and iron had no effect on zinc absorption.
- Taxon
- Wheat Seedlings
Triticum aestivumt0 - Treatment
- Mn 2+ and Fe 2+e0
- Outcome
- Zn 2+ absorptione1
- Direction
- no effecte0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mn 2+ and Fe 2+ had no effect”
e1“Copper inhibited Zn 2+ absorption strongly and competitively, Co 2+ competitively but weakly, and Mn 2+ and Fe 2+ had no effect”
t0“Wheat Seedlings”
Title
Zinc Absorption by Wheat Seedlings: II. Inhibition by Hydrogen Ions and by Micronutrient Cations
F. M. Chaudhry; J. F. Loneragan Soil Science Society of America Journal 1972. doi:10.2136/sssaj1972.03615995003600020035x
Other claims from this paper (13)
- Intervention effect At low calcium, hydrogen and copper ions retarded zinc absorption through toxicity and inhibition.
- Intervention effect Calcium at 350µ M overcame hydrogen toxicity at pH 3.
- Intervention effect Calcium at 500µ M did not prevent copper toxicity at 10µ M.
- Observation No ion toxicities appeared at calcium concentrations common in soil solutions.
- Intervention effect Copper strongly and competitively inhibited zinc absorption.
- Intervention effect Cobalt weakly and competitively inhibited zinc absorption.
- Intervention effect Calcium had no effect on copper inhibition.
- Intervention effect Increasing hydrogen ion concentration from pH 7 to 3 severely inhibited zinc absorption at three calcium concentrations.
- Mechanism Hydrogen ion inhibition of zinc absorption had calcium sensitive and insensitive mechanisms.
- Observation The calcium sensitive mechanism operated only at very low calcium or highly acidic conditions.
- Mechanism At usual soil-solution ion concentrations, hydrogen inhibited zinc absorption only by a calcium insensitive, noncompetitive mechanism.
- Observation The effects of calcium, copper and hydrogen on zinc absorption in soils were predicted to be additive.
- Mechanism Copper and hydrogen effects on soil chemistry may oppose their effects on zinc absorption.