Claim · model-written summary
The capacity of lipoxidase to act reversibly in squash depends primarily on the duration of exposure and on the kind of light.
- Taxon
- squasht0
- Outcome
- the capacity of lipoxidase to act reversiblye5
- Qualifier
- depends primarily on the duration of exposure and on the kind of lighte5
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValue
Verbatim
t0“Lipoxidase Metabolism of Squash Seedlings”
e5“These results demonstrate that the capacity of lipoxidase to act reversibly depends primarily on the duration of exposure and on the kind of light (red or far-red) to which the seedlings were exposed initially”
Title
Action and Interaction of Red and Far-Red Radiation on Lipoxidase Metabolism of Squash Seedlings
Kenneth Surrey PLANT PHYSIOLOGY 1967. doi:10.1104/pp.42.3.421
Other claims from this paper (9)
- Observation In dark-grown squash seedlings, cotyledon lipoxidase activity peaked on the fifth day and was lowest on the eighth day.
- Intervention effect Under continuous irradiation, red light (655 mmu) accelerated the rate of lipoxidase enzyme disappearance in squash.
- Intervention effect Under continuous irradiation, far-red light (735 mmu) retarded the rate of lipoxidase enzyme disappearance in squash.
- Intervention effect Red-light acceleration of enzyme disappearance was repeatedly reversed by far-red light in squash seedlings given an initial red exposure.
- Observation The responses in squash were independent of the duration of irradiation at each of the alternating wavebands.
- Observation The lipoxidase system of squash seedlings given an initial far-red exposure responded reversibly to alternating far-red and red extended exposures.
- Observation The lipoxidase system of squash seedlings given an initial far-red exposure failed to respond reversibly when short exposures were used.
- Intervention effect White light given 24 hours before or after the red and far-red treatment caused no change in lipoxidase metabolism in squash.
- Mechanism Lipoxidase metabolism is an additional biochemical manifestation of the red, far-red reaction in photomorphogenesis of squash.