Abstract
The elongation of rice shoots (Oryza saliva L.) exposed to various light conditions was measured using angular movement transducers. Plants growing in continuous light responded to a sudden increase in light fluence rate with a pronounced decrease in the rate of elongation. The growth rate returned to the initial steady state within 15-60 min, depending on the difference in fluence rate between the continuous and the supplemental light. When the fluence rate was reduced to its original level, the elongation rate rose transiently before returning to the initial value. The inhibition of elongation was fluence dependent, and blue and red light were more effective in reducing the elongation rate than was green or infrared irradiation. Irradiation of a single tiller affected also other tillers of the same plant which were shielded from the light. Measurements of transpiration and water uptake by whole plants and of leaf temperatures indicated that the transient changes in growth rates were caused by perturbations in the water balance of the plant.
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Claims 7
Claim · model-written summary
A sudden increase in light fluence rate decreased rice elongation rate.
- Taxon
- rice
Oryza sativae1 - Treatment
- a sudden increase in light fluence ratee0
- Outcome
- rate of elongatione0
- Direction
- decreasee0
- Comparator
- continuous lighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants growing in continuous light responded to a sudden increase in light fluence rate with a pronounced decrease in the rate of elongation”
e1“The elongation of rice shoots (Oryza saliva L.) exposed to various light conditions”
Claim · model-written summary
After the light increase, rice growth rate returned to its initial state within 15–60 minutes, depending on the fluence difference.
- Taxon
- riceOryza sativae1
- Outcome
- growth ratee0
- Direction
- returnede0
- Value
- 15-60 mine0
- Qualifier
- depending on the difference in fluence rate between the continuous and the supplemental lighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The growth rate returned to the initial steady state within 15-60 min, depending on the difference in fluence rate between the continuous and the supplemental light”
e1“rice shoots”
Claim · model-written summary
Restoring the original fluence rate caused a transient rise in rice elongation rate.
- Taxon
- riceOryza sativae1
- Treatment
- fluence rate was reduced to its original levele0
- Outcome
- elongation ratee0
- Direction
- rose transientlye0
- Comparator
- initial valuee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When the fluence rate was reduced to its original level, the elongation rate rose transiently before returning to the initial value”
e1“rice shoots”
Claim · model-written summary
Rice elongation inhibition varied with fluence rate.
- Taxon
- riceOryza sativae1
- Treatment
- fluencee0
- Outcome
- inhibition of elongatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The inhibition of elongation was fluence dependent”
e1“rice shoots”
Claim · model-written summary
Blue and red light reduced rice elongation more than green or infrared irradiation.
- Taxon
- riceOryza sativae1
- Treatment
- blue and red lighte0
- Outcome
- elongation ratee0
- Direction
- reducinge0
- Comparator
- green or infrared irradiatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“blue and red light were more effective in reducing the elongation rate than was green or infrared irradiation”
e1“rice shoots”
Claim · model-written summary
Light exposure of one rice tiller affected shielded tillers on the same plant.
- Taxon
- riceOryza sativae1
- Treatment
- Irradiation of a single tillere0
- Outcome
- affected also other tillers of the same plante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irradiation of a single tiller affected also other tillers of the same plant which were shielded from the light”
e1“rice shoots”
Claim · model-written summary
The authors attributed transient growth changes to perturbations in rice water balance.
- Taxon
- riceOryza sativae1
- Outcome
- transient changes in growth ratese0
- Qualifier
- perturbations in the water balance of the plante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the transient changes in growth rates were caused by perturbations in the water balance of the plant”
e1“rice shoots”
The same questions in other papers
light · growth · Oryza sativa (rice)Positive and negative results
39 papers in the same direction as this paper · 55 in the opposite direction
- positive
- positive
- positive
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See all 95 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.