Abstract
Light quality and quantity affect plant adaptation to changing light conditions. Certain wavelengths in the visible and near-visible spectrum are known to have discrete effects on plant growth and development, and the effects of red, far-red, blue, and ultraviolet light have been well described. In this report, an effect of green light on Arabidopsis (Arabidopsis thaliana) rosette architecture is demonstrated using a narrow-bandwidth light-emitting diode-based lighting system. When green light was added to a background of constant red and blue light, plants exhibited elongation of petioles and upward leaf reorientation, symptoms consistent with those observed in a shaded light environment. The same green light-induced phenotypes were also observed in phytochrome (phy) and cryptochrome (cry) mutant backgrounds. To explore the molecular mechanism underlying the green light-induced response, the accumulation of shade-induced transcripts was measured in response to enriched green light environments. Transcripts that have been demonstrated to increase in abundance under far-red-induced shade avoidance conditions either decrease or exhibit no change when green light is added. However, normal far-red light-associated transcript accumulation patterns are observed in cryptochrome mutants grown with supplemental green light, indicating that the green-absorbing form of cryptochrome is the photoreceptor active in limiting the green light induction of shade-associated transcripts. These results indicate that shade symptoms can be induced by the addition of green light and that cryptochrome receptors and an unknown light sensor participate in acclimation to the enriched green environment.
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Claims 8
Claim · model-written summary
Adding green light elongated Arabidopsis petioles.
- Taxon
- Arabidopsis
Arabidopsise1 - Treatment
- green lighte0
- Outcome
- elongation of petiolese0
- Direction
- elongatione0
- Comparator
- constant red and blue lighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When green light was added to a background of constant red and blue light, plants exhibited elongation of petioles and upward leaf reorientation”
e1“Arabidopsis (Arabidopsis thaliana) rosette architecture”
Claim · model-written summary
Adding green light caused upward leaf reorientation.
- Taxon
- ArabidopsisArabidopsise1
- Treatment
- green lighte0
- Outcome
- upward leaf reorientatione0
- Comparator
- constant red and blue lighte0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When green light was added to a background of constant red and blue light, plants exhibited elongation of petioles and upward leaf reorientation”
e1“Arabidopsis (Arabidopsis thaliana) rosette architecture”
Claim · model-written summary
The same green light phenotypes occurred in phytochrome and cryptochrome mutants.
- Taxon
- ArabidopsisArabidopsise1
- Material
- phytochrome (phy) and cryptochrome (cry) mutant backgroundse0
- Outcome
- green light-induced phenotypese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The same green light-induced phenotypes were also observed in phytochrome (phy) and cryptochrome (cry) mutant backgrounds.”
e1“Arabidopsis (Arabidopsis thaliana) rosette architecture”
Claim · model-written summary
Shade induced transcripts decreased with added green light.
- Taxon
- ArabidopsisArabidopsise1
- Treatment
- green lighte0
- Outcome
- Transcriptse0
- Direction
- decreasee0
- Comparator
- far-red-induced shade avoidance conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Transcripts that have been demonstrated to increase in abundance under far-red-induced shade avoidance conditions either decrease or exhibit no change when green light is added.”
e1“Arabidopsis (Arabidopsis thaliana) rosette architecture”
Claim · model-written summary
Some shade induced transcripts showed no change with added green light.
- Taxon
- ArabidopsisArabidopsise1
- Treatment
- green lighte0
- Outcome
- Transcriptse0
- Direction
- no changee0
- Comparator
- far-red-induced shade avoidance conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Transcripts that have been demonstrated to increase in abundance under far-red-induced shade avoidance conditions either decrease or exhibit no change when green light is added.”
e1“Arabidopsis (Arabidopsis thaliana) rosette architecture”
Claim · model-written summary
Cryptochrome mutants given supplemental green light showed normal far red associated transcript accumulation.
- Taxon
- ArabidopsisArabidopsise1
- Material
- cryptochrome mutantse0
- Treatment
- supplemental green lighte0
- Outcome
- normal far-red light-associated transcript accumulation patternse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“normal far-red light-associated transcript accumulation patterns are observed in cryptochrome mutants grown with supplemental green light”
e1“Arabidopsis (Arabidopsis thaliana) rosette architecture”
Claim · model-written summary
The authors infer that green absorbing cryptochrome limits green light induction of shade associated transcripts.
- Taxon
- ArabidopsisArabidopsise1
- Gene
- cryptochromee0
- Outcome
- green light induction of shade-associated transcriptse0
- Qualifier
- limitinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the green-absorbing form of cryptochrome is the photoreceptor active in limiting the green light induction of shade-associated transcripts.”
e1“Arabidopsis (Arabidopsis thaliana) rosette architecture”
Claim · model-written summary
The authors infer that cryptochrome receptors and an unknown light sensor participate in acclimation to enriched green light.
- Taxon
- ArabidopsisArabidopsise1
- Gene
- cryptochrome receptorse0
- Outcome
- acclimation to the enriched green environmente0
- Qualifier
- an unknown light sensore0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cryptochrome receptors and an unknown light sensor participate in acclimation to the enriched green environment.”
e1“Arabidopsis (Arabidopsis thaliana) rosette architecture”
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See all 80 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.