Claim · model-written summary
Seed germination of wild type and phyA-null seeds was photoreversibly regulated by red and far-red light of 10-1,000 micromol m-2.
- Taxon
- Arabidopsis thaliana
Arabidopsis thalianae0 - Material
- PhyA-null mutante1
- Treatment
- red and far-red lights of 10-1,000 micromol m-2e1
- Outcome
- Seed germinatione1
- Qualifier
- when incubated in darkness for 1-14 hre1
Not reportedGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingDirectionValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We have examined the seed germination in Arabidopsis thaliana of wild type (wt)”
e1“Seed germination of the wt and PhyA-null mutant (phyA) was photoreversibly regulated by red and far-red lights of 10-1,000 micromol m-2 when incubated in darkness for 1-14 hr, but no germination occurred in PhyB-null mutant (phyB)”
Title
T Shinomura; A Nagatani; H Hanzawa; et al. Proceedings of the National Academy of Sciences 1996. doi:10.1073/pnas.93.15.8129
Other claims from this paper (8)
- Observation The phyB-null mutant seeds did not germinate under the tested dark incubation and light conditions.
- Intervention effect Phytochrome B mutant seeds that were incubated in darkness for 48 hr synthesized PhyA and germinated under red and far-red light.
- Observation The phyA-null mutant showed no such germination response to red and far-red light after 48 hr dark incubation.
- Intervention effect Monochromatic 300-780 nm light of very low fluence induced PhyA-dependent germination that was not photoreversible.
- Intervention effect Germination under alternating 540-690 nm and 695-780 nm irradiation at 0.01-1 mmol m-2 was photoreversibly regulated by PhyB.
- Mechanism PhyA photoirreversibly triggers seed germination under UV, visible and far-red light of very low fluence.
- Mechanism PhyB controls the photoreversible effects of low fluence on seed germination.
- Mechanism Seed germination is regulated by PhyA and PhyB but not by other phytochromes.