Claim · model-written summary
Preincubation in light increased Cu(2+) inhibition of spinach chloroplasts.
- Taxon
- spinach
Spinacia oleraceae2 - Treatment
- preincubation in lighte1
- Outcome
- inhibitione1
- Direction
- increasede1
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“When chloroplasts were exposed to preincubation in light, there was increased inhibition as a result of Cu(2+) binding to inhibitory sites”
e2“in isolated spinach chloroplasts”
Title
The Cupric Ion as an Inhibitor of Photosynthetic Electron Transport in Isolated Chloroplasts
Arturo Cedeno-Maldonado; J. A. Swader; Robert L. Heath PLANT PHYSIOLOGY 1972. doi:10.1104/pp.50.6.698
Other claims from this paper (7)
- Intervention effect Cu(2+) strongly inhibited uncoupled photosynthetic electron transport in isolated spinach chloroplasts.
- Association Cu(2+) inhibition depended on the ratio of chlorophyll to inhibitor in isolated spinach chloroplasts.
- Observation Binding of Cu(2+) to chloroplast membranes removed Cu(2+) from solution in isolated spinach chloroplasts.
- Intervention effect Preincubation in the dark decreased Cu(2+) inhibition of spinach chloroplasts.
- Intervention effect The degree of inhibition was lower at low light intensities than at high light intensities.
- Association Photosystem I was more resistant to inhibition than photosystem II in spinach chloroplasts.
- Observation The most sensitive site to the inhibitor was the oxidizing side of photosystem II.