Abstract
The correct development of seeds is a pivotal requirement for species preservation. This process depends on the balance between sensing the environmental stimuli/stressors and hormone-mediated transduction, which results in physiological responses. The red and blue regions of the electromagnetic spectrum are known to influence seed dormancy and germination. Here, we report on the effects induced by the blue (peak at 430 nm) and red (peak at 650 nm) regions of the electromagnetic spectrum on seeds from photo- and skotomorphogenetic capsules developed under white, blue, or red light. Regardless of exposure, seeds from skotomorphogenetic capsules showed an almost absent dormancy in association with altered germination kinetics. Conversely, in seeds from photomorphogenetic capsules, the exposure to the blue region induced skotomorphogenetic-like effects, while the exposure to the whole visible range (350–750 nm), as well as to only the red region, showed a dose-related trend. The observed differences appeared to be dependent on the wavelengths in the red and to be based on transduction mechanisms taking place in fruits. While the molecular bases of this differential effect need to be clarified, the results hint at the role played by different light wavelengths and intensities in seed development and germination. These findings may be relevant for applications in crop production and species safeguarding.
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Claims 5
Claim · model-written summary
Seeds from skotomorphogenetic capsules showed almost absent dormancy, with altered germination kinetics, regardless of light exposure.
- Taxon
- Nicotiana tabacum
Nicotiana tabacumt0 - Treatment
- skotomorphogenetic capsulese1
- Outcome
- dormancye1
- Direction
- almost absente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Nicotiana tabacum L.”
e1“Regardless of exposure, seeds from skotomorphogenetic capsules showed an almost absent dormancy in association with altered germination kinetics”
Claim · model-written summary
Blue light exposure induced skotomorphogenetic-like effects in seeds from photomorphogenetic capsules.
- Taxon
- Nicotiana tabacumNicotiana tabacumt0
- Treatment
- exposure to the blue regione2
- Outcome
- skotomorphogenetic-like effectse2
- Direction
- inducede2
- Comparator
- seeds from photomorphogenetic capsulese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Nicotiana tabacum L.”
e2“in seeds from photomorphogenetic capsules, the exposure to the blue region induced skotomorphogenetic-like effects”
Claim · model-written summary
Exposure to the whole visible range (350–750 nm) and to red light alone showed a dose-related trend in seeds from photomorphogenetic capsules.
- Taxon
- Nicotiana tabacumNicotiana tabacumt0
- Treatment
- whole visible range (350–750 nm)e3
- Outcome
- dose-related trende3
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Nicotiana tabacum L.”
e3“exposure to the whole visible range (350–750 nm), as well as to only the red region, showed a dose-related trend”
Claim · model-written summary
The observed differences in seeds appear to depend on red wavelengths and on transduction mechanisms in fruits.
- Taxon
- Nicotiana tabacumNicotiana tabacumt0
- Outcome
- observed differencese4
- Qualifier
- transduction mechanisms taking place in fruitse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Nicotiana tabacum L.”
e4“The observed differences appeared to be dependent on the wavelengths in the red and to be based on transduction mechanisms taking place in fruits”
Claim · model-written summary
Different light wavelengths and intensities may play a role in seed development and germination.
- Taxon
- Nicotiana tabacumNicotiana tabacumt0
- Outcome
- seed development and germinatione5
- Qualifier
- different light wavelengths and intensitiese5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Nicotiana tabacum L.”
e5“The results hint at the role played by different light wavelengths and intensities in seed development and germination”