Claim · model-written summary
Copper appears not to move out of wheat leaves until they lose organic nitrogen compounds.
- Taxon
- wheat
Triticum aestivume0 - Compound
- organic nitrogen compoundse1
- Outcome
- move out of plant leavese1
Not reportedMaterialGeneOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“among organs of wheat plants”
e1“It is suggested that copper does not move out of plant leaves until they lose organic nitrogen compounds”
Title
Copper Supply in Relation to Content and Redistribution of Copper Among Organs of the Wheat Plant*
J. F. LONERAGAN; K. SNOWBALL; A. D. ROBSON Annals of Botany 1980. doi:10.1093/oxfordjournals.aob.a085870
Other claims from this paper (11)
- Intervention effect Wheat grown without copper became severely copper deficient and produced no grain.
- Intervention effect A marginal copper supply (Cu1) overcame all deficiency symptoms and promoted growth and grain production in wheat.
- Intervention effect Eightfold increased copper supply (Cu2) did not change vegetative or grain production in wheat.
- Association Copper concentrations in stems, individual leaves and whole tops were highest when young and responded most strongly to copper supply.
- Association Leaves of Cu1 and Cu2 wheat lost copper rapidly as they aged.
- Association The first Cu0 leaves of wheat retained their copper and remained healthy for more than 7 weeks while younger leaves became severely deficient.
- Association In all treatments, loss of copper from the oldest wheat leaf paralleled senescence and the loss of nitrogen.
- Intervention effect In wheat under Cu2 supply, 67 per cent of the copper in vegetative organs of the primary shoot at flowering moved out during grain development.
- Intervention effect The oldest leaf of severely deficient Cu0 wheat plants had a higher copper concentration than Cu1 and Cu2 plants.
- Recommendation Old wheat organs should not be included in samples for diagnosis of copper deficiency; only young organs should be used.
- Observation The copper concentration of young wheat leaves indicated copper status: a value of 1 μg g−1 in young leaves indicated copper deficiency.