Claim · model-written summary
Monochromatic 300-780 nm light of very low fluence induced PhyA-dependent germination that was not photoreversible.
- Taxon
- Arabidopsis thaliana
Arabidopsis thalianae0 - Treatment
- monochromatic 300-780 nm lights of very low fluencee4
- Gene
- PhyAe4
- Outcome
- the germinatione4
- Qualifier
- was not photoreversiblee4
Not reportedMaterialCompoundOrgan / 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)”
e4“Action spectra for the PhyA response show that monochromatic 300-780 nm lights of very low fluence induced the germination, and this induction was not photoreversible in the range examined”
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 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.
- 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 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.