Abstract
Tomato plants were grown under light intensities of 36 or 90 W m(-2) [photosynthetically active radiation (PAR)], and then the light intensity was changed to 36, 90 or 180 W m(-2) for 8 h to investigate the effect of temporary changes in light intensity on the carbon budget of photoassimilates from the third leaf using a (14)CO(2) steady-state feeding method. In the plants that were raised under 90 W m(-2), the photosynthetic rate increased when the light intensity was increased to 180 W m(-2), whereas no increase occurred in the plants that were raised under 36 W m(-2). Although the total amount of carbon fixed during the 8-h light period showed a large difference between plants grown at the two initial light intensities, the proportion of carbon exported during the light period did not differ apparently, irrespective of the change in light intensity. However, the amount of carbon exported during the time course was higher in plants that were raised under 90 W m(-2) than those raised under 36 W m(-2), irrespective of the change in light intensity. The partitioning pattern of (14)C-photoassimilates was not changed by the change in light intensity, irrespective of whether the light intensity was increased or not. However, the amount of (14)C-photoassimilates accumulated in each part differed according to the two initial light intensities. The carbon transport from a source leaf was also investigated through a quantitative analysis of carbon balance.
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Claims 7
Claim · model-written summary
In tomato raised under 90 W m(-2), the photosynthetic rate increased when light intensity was raised to 180 W m(-2).
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- light intensity was increased to 180 W m(-2)e1
- Outcome
- photosynthetic ratee1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tomato plants were grown under light intensities of 36 or 90 W m(-2)”
e1“In the plants that were raised under 90 W m(-2), the photosynthetic rate increased when the light intensity was increased to 180 W m(-2), whereas no increase occurred in the plants that were raised under 36 W m(-2)”
Claim · model-written summary
In tomato raised under 36 W m(-2), the photosynthetic rate did not increase when light intensity was raised to 180 W m(-2).
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- light intensity was increased to 180 W m(-2)e1
- Outcome
- photosynthetic ratee1
- Direction
- no increasee1
- Comparator
- plants that were raised under 90 W m(-2)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tomato plants were grown under light intensities of 36 or 90 W m(-2)”
e1“In the plants that were raised under 90 W m(-2), the photosynthetic rate increased when the light intensity was increased to 180 W m(-2), whereas no increase occurred in the plants that were raised under 36 W m(-2)”
Claim · model-written summary
Carbon export during the time course was higher in tomato raised under 90 W m(-2) than under 36 W m(-2), irrespective of the light change.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- plants that were raised under 90 W m(-2)e1
- Outcome
- amount of carbon exported during the time coursee1
- Direction
- highere1
- Comparator
- those raised under 36 W m(-2)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tomato plants were grown under light intensities of 36 or 90 W m(-2)”
e1“the amount of carbon exported during the time course was higher in plants that were raised under 90 W m(-2) than those raised under 36 W m(-2), irrespective of the change in light intensity”
Claim · model-written summary
The proportion of carbon exported during the light period did not differ with the change in light intensity.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- change in light intensitye1
- Outcome
- proportion of carbon exported during the light periode1
- Direction
- did not differe1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tomato plants were grown under light intensities of 36 or 90 W m(-2)”
e1“the proportion of carbon exported during the light period did not differ apparently, irrespective of the change in light intensity”
Claim · model-written summary
Total carbon fixed during the 8-h light period differed between tomato plants grown at the two initial light intensities.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- two initial light intensitiese1
- Outcome
- total amount of carbon fixed during the 8-h light periode1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tomato plants were grown under light intensities of 36 or 90 W m(-2)”
e1“the total amount of carbon fixed during the 8-h light period showed a large difference between plants grown at the two initial light intensities”
Claim · model-written summary
The partitioning pattern of (14)C-photoassimilates in tomato was not changed by the change in light intensity.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- change in light intensitye1
- Outcome
- partitioning pattern of (14)C-photoassimilatese1
- Direction
- was not changede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tomato plants were grown under light intensities of 36 or 90 W m(-2)”
e1“The partitioning pattern of (14)C-photoassimilates was not changed by the change in light intensity, irrespective of whether the light intensity was increased or not”
Claim · model-written summary
The amount of (14)C-photoassimilates accumulated in each part of tomato differed according to the two initial light intensities.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- two initial light intensitiese1
- Outcome
- amount of (14)C-photoassimilates accumulated in each parte1
- Direction
- differede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tomato plants were grown under light intensities of 36 or 90 W m(-2)”
e1“the amount of (14)C-photoassimilates accumulated in each part differed according to the two initial light intensities”
The same questions in other papers
light · molecular: metabolites · Solanum lycopersicum (tomato)Positive and negative results
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64 papers in the same direction as this paper · 43 in the opposite direction · 5 reporting no difference from an alternative
- positive
- negative
- negative
109 papers more in this group
See all 113 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.