Abstract
Sink activity of fruits had been suggested to vary depending on transpiration of fruits. In this study, the effect of transpiration on dry matter accumulation was evaluated in tomato ( Lycopersicon esculentum Mill.). Fruits of cv. Saturn at 14 days after anthesis were enclosed in chambers and aerated with dried (<15% RH) or moistened (>90% RH) air. These treatments did not cause any significant differences in fruit fresh weight, dry weight, percentage of dry matter, and concentration of soluble sugars within 5 days of the treatment, or the import of 14 C within 18 h after the application of 14 CO 2 to the source leaves. However, displacement transducer measurement of each fruit showed a 40% reduction in growth rate in response to exchange of moistened air with dried air. When fruits of cv. Momotaro were exposed to transpiration treatments from the beginning of visible fruit enlargement until the ripening stage, the fruits exhibited 20% reduction in growth and lower accumulation of dry matter at harvest following treatment with dried air. These results suggested that higher transpiration reduced both water accumulation and dry matter accumulation. In contrast, when fruit growth was mechanically restricted by enclosing the fruits in a chamber packed with glass beads, and dried or moistened air was passed through the spaces between the glass beads, fruits exhibited higher dry matter accumulation under dried air treatment conditions. The results show that only under artificial conditions would transpiration of fruits potentially drive carbohydrate transport; it does not serve as a limiting step of carbohydrate transport to tomato fruits under normal circumstances.
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Claims 7
Claim · model-written summary
Dry and moist air did not significantly differ in fruit fresh weight, dry weight, dry matter percentage, or soluble sugar concentration over five days.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- These treatmentse0
- Outcome
- fruit fresh weight, dry weight, percentage of dry matter, and concentration of soluble sugarse0
- Direction
- did not cause any significant differencese0
- Comparator
- dried (<15% RH) or moistened (>90% RH) aire1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These treatments did not cause any significant differences in fruit fresh weight, dry weight, percentage of dry matter, and concentration of soluble sugars within 5 days of the treatment”
t0“tomato”
e1“Fruits of cv. Saturn at 14 days after anthesis were enclosed in chambers and aerated with dried (<15% RH) or moistened (>90% RH) air”
Claim · model-written summary
Dry and moist air did not significantly differ in carbon import within 18 h.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- dried (<15% RH) or moistened (>90% RH) aire1
- Outcome
- import of 14 Ce0
- Comparator
- moistened (>90% RH) aire1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“or the import of 14 C within 18 h after the application of 14 CO 2 to the source leaves”
t0“tomato”
e1“Fruits of cv. Saturn at 14 days after anthesis were enclosed in chambers and aerated with dried (<15% RH) or moistened (>90% RH) air”
Claim · model-written summary
Changing from moist to dry air reduced fruit growth rate by 40%.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- dried aire0
- Outcome
- growth ratee0
- Direction
- reductione0
- Value
- 40%e0
- Comparator
- moistened aire0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a 40% reduction in growth rate in response to exchange of moistened air with dried air”
t0“tomato”
Claim · model-written summary
Longer dry air exposure reduced Momotaro fruit growth by 20%.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- cv. Momotaroe1
- Treatment
- dried aire0
- Outcome
- growthe0
- Direction
- reductione0
- Value
- 20%e0
- Comparator
- moistened (>90% RH) aire2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the fruits exhibited 20% reduction in growth and lower accumulation of dry matter at harvest following treatment with dried air”
t0“tomato”
e1“When fruits of cv. Momotaro were exposed to transpiration treatments from the beginning of visible fruit enlargement until the ripening stage”
e2“Fruits of cv. Saturn at 14 days after anthesis were enclosed in chambers and aerated with dried (<15% RH) or moistened (>90% RH) air”
Claim · model-written summary
Longer dry air exposure lowered fruit dry matter accumulation at harvest.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- cv. Momotaroe1
- Treatment
- dried aire0
- Outcome
- accumulation of dry mattere0
- Direction
- lowere0
- Comparator
- moistened (>90% RH) aire2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lower accumulation of dry matter at harvest following treatment with dried air”
t0“tomato”
e1“When fruits of cv. Momotaro were exposed to transpiration treatments from the beginning of visible fruit enlargement until the ripening stage”
e2“Fruits of cv. Saturn at 14 days after anthesis were enclosed in chambers and aerated with dried (<15% RH) or moistened (>90% RH) air”
Claim · model-written summary
With mechanically restricted growth, dry air increased fruit dry matter accumulation.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- dried air treatment conditionse0
- Outcome
- dry matter accumulatione0
- Direction
- highere0
- Qualifier
- mechanically restrictede2
- Comparator
- moistened (>90% RH) aire1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fruits exhibited higher dry matter accumulation under dried air treatment conditions”
t0“tomato”
e1“Fruits of cv. Saturn at 14 days after anthesis were enclosed in chambers and aerated with dried (<15% RH) or moistened (>90% RH) air”
e2“when fruit growth was mechanically restricted by enclosing the fruits in a chamber packed with glass beads”
Claim · model-written summary
The authors conclude transpiration does not normally limit carbohydrate transport to tomato fruit.
- Taxon
- tomatoSolanum lycopersicume0
- Outcome
- limiting step of carbohydrate transporte0
- Qualifier
- under normal circumstancese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it does not serve as a limiting step of carbohydrate transport to tomato fruits under normal circumstances”
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- negative
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- positive
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See all 66 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.