Claim · model-written summary
Glutathione was oxidized as copper concentration increased.
- Taxon
- Raphanus sativus
Raphanus sativust0 - Treatment
- copper concentratione0
- Outcome
- glutathione was oxidizede0
- Direction
- increasede0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Raphanus sativus”
e0“glutathione was oxidized as the copper concentration increased”
Title
Phenols and antioxidative status of Raphanus sativus grown in copper excess
Cristina Sgherri; Elena Cosi; Flavia Navari‐Izzo Physiologia Plantarum 2003. doi:10.1034/j.1399-3054.2003.00068.x
Other claims from this paper (18)
- Intervention effect Cu contents increased with copper treatment in both shoots and roots of radish.
- Observation Roots maintained a Cu content eight- to ten-fold higher than shoots.
- Intervention effect Copper treatment inhibited growth of both shoots and roots.
- Intervention effect Copper treatment increased the percentage of dry weight in both shoots and roots.
- Intervention effect Membrane damage and lipid peroxidation increased as copper concentration increased.
- Observation Control radish shoots had high contents of reduced glutathione.
- Observation Control radish shoots had low contents of phytochelatin-SH.
- Observation Roots showed the opposite pattern to control shoots (low reduced glutathione and high phytochelatin-SH).
- Mechanism The authors suggest that reduced glutathione is used for phytochelatin synthesis.
- Intervention effect Phytochelatin-SH content reached its maximum at 5 micro M copper and then decreased in both shoots and roots.
- Intervention effect At 15 micro M copper, root phytochelatin-SH returned to the control value.
- Intervention effect At 15 micro M copper, shoot phytochelatin-SH was five-fold higher than the control value.
- Observation Chlorogenic, vanillic and caffeic acids were among the main phenolic acids in radish.
- Observation Siringic, p-coumaric and ferulic acids were also among the main phenolic acids in radish.
- Observation Gallic, protocatechuic and p-hydroxybenzoic acids were the least represented phenolic acids in radish.
- Intervention effect Phenolic acids and total and reduced ascorbate contents increased with intensifying copper treatment.
- Observation Total ascorbate remained 35% higher in shoots than in roots.
- Mechanism The authors suggest that reduced ascorbate replenished reducing equivalents to phenoxyl radicals, explaining the increase in phenolic compounds.