Claim · model-written summary
Red-light irradiation of the coleoptile tip decreased extension rate after a latent period of 8 to 10 minutes, relative to the dark control.
- Taxon
- Triticum aestivum
Triticum aestivume0 - Material
- Maris Huntsmane0
- Organ / stage
- the tip of the intact coleoptilee1
- Treatment
- red lighte1
- Outcome
- extension ratee1
- Direction
- decreasee1
- Qualifier
- after a latent period of 8 to 10 minutese1
- Comparator
- dark controle3
Not reportedGeneCompoundInteractorInteractor roleSecond interactorSecond interactor roleSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“intact dark-grown wheat (Triticum aestivum L. cv Maris Huntsman) seedlings”
e1“When the tip of the intact coleoptile was irradiated with red light from two opposite fiber bundles (fluence rate: 2 x 64 micromoles per square meter per second) for varying periods of time (10 seconds, 1 minute, 5 minutes, continuous), a decrease in extension rate was detectable after a latent period of 8 to 10 minutes”
e3“Extension rate reached a minimum (65% inhibition) at about 85 minutes, after which growth acceleration toward the dark control rate was observed”
Title
Rapid Suppression of Extension Growth in Dark-Grown Wheat Seedlings by Red Light
Wilfrid Bleiss; Harry Smith PLANT PHYSIOLOGY 1985. doi:10.1104/pp.77.3.552
Other claims from this paper (5)
- Intervention effect Up to 30 minutes of red irradiation gave no difference in inhibition kinetics (about 20 to 25%) between irradiation lengths.
- Intervention effect Extension rate reached a minimum of 65% inhibition at about 85 minutes after red light.
- Intervention effect After about 85 minutes, growth accelerated toward the dark control rate after red light.
- Intervention effect Far-red light did not reverse the rapid effect of red light on growth, even when given 4 seconds after red light.
- Intervention effect Short (15 seconds) far-red light did not induce a growth response.