Abstract
Tomato plants were grown using a nutrient film technique to evaluate the effects of salinity on the distribution of photosynthates and sucrose-degrading enzymes in fruit in relation to sink strength. From first flower anthesis until harvest of the 2nd truss, saline treatment of sodium chloride added to the standard nutrient solution to an EC of 8.0 dS/m was applied. The average fruit weight in the salinity treatment was 59% of the control at the mature red stage. Total soluble solids (Brix%) were 6.5% in the control and 9.2% in the salinity treatment. The photosynthetic rate per unit leaf area was decreased by salinity treatment. Salinity decreased 13C assimilation in the whole tomato plant, while it increased the transport and distribution of 13C assimilates to the fruit significantly. The activities of soluble and cell wall-bound acid invertase were not affected by salinity; however, the activity of sucrose synthase in fruit exposed to the salinity was higher than that in the control during fruit development. We concluded that the increase in total soluble solids in fruit subjected to salinity was not only a result of condensation caused by reduced water uptake, but active transport of photosynthates to the fruit due to increase in sucrose-degrading enzyme activities, especially sucrose synthase.
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Claims 9
Claim · model-written summary
Salinity-treated tomato fruit weighed 59% of control at mature red stage.
- Taxon
- Tomato
Solanum lycopersicumt0 - Organ / stage
- mature red stagee0
- Treatment
- salinity treatmente0
- Outcome
- average fruit weighte0
- Direction
- lowerinferrede0
- Value
- 59%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The average fruit weight in the salinity treatment was 59% of the control at the mature red stage”
t0“Tomato”
Claim · model-written summary
Tomato fruit soluble solids were 9.2% under salinity versus 6.5% in control.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- salinity treatmente0
- Outcome
- Total soluble solids (Brix%)e0
- Direction
- higherinferrede0
- Value
- 9.2%e0
- Qualifier
- 6.5%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total soluble solids (Brix%) were 6.5% in the control and 9.2% in the salinity treatment”
t0“Tomato”
Claim · model-written summary
Salinity decreased photosynthetic rate per unit tomato leaf area.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- salinity treatmente0
- Outcome
- photosynthetic rate per unit leaf areae0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The photosynthetic rate per unit leaf area was decreased by salinity treatment”
t0“Tomato”
Claim · model-written summary
Salinity decreased whole-plant tomato 13C assimilation.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- Salinitye0
- Outcome
- 13C assimilatione0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity decreased 13C assimilation in the whole tomato plant”
Claim · model-written summary
Salinity significantly increased transport and distribution of 13C assimilates to tomato fruit.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- Salinitye0
- Outcome
- transport and distribution of 13C assimilates to the fruite0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity decreased 13C assimilation in the whole tomato plant, while it increased the transport and distribution of 13C assimilates to the fruit significantly”
Claim · model-written summary
Salinity did not affect soluble acid invertase activity.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- salinitye0
- Gene
- soluble and cell wall-bound acid invertasee0
- Outcome
- acid invertasee0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The activities of soluble and cell wall-bound acid invertase were not affected by salinity”
t0“Tomato”
Claim · model-written summary
Salinity did not affect cell wall-bound acid invertase activity.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- salinitye0
- Gene
- cell wall-bound acid invertasee0
- Outcome
- activities of soluble and cell wall-bound acid invertasee0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The activities of soluble and cell wall-bound acid invertase were not affected by salinity”
t0“Tomato”
Claim · model-written summary
Sucrose synthase activity in tomato fruit was higher with salinity during fruit development.
- Taxon
- TomatoSolanum lycopersicumt0
- Organ / stage
- fruite0
- Treatment
- salinitye0
- Gene
- sucrose synthasee0
- Outcome
- activity of sucrose synthasee0
- Direction
- highere0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the activity of sucrose synthase in fruit exposed to the salinity was higher than that in the control during fruit development”
t0“Tomato”
Claim · model-written summary
The authors attributed increased soluble solids to reduced water uptake and active photosynthate transport linked to sucrose-degrading enzyme activity.
- Taxon
- TomatoSolanum lycopersicumt0
- Gene
- sucrose synthasee0
- Outcome
- increase in total soluble solids in fruite0
- Qualifier
- active transport of photosynthates to the fruit due to increase in sucrose-degrading enzyme activitiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the increase in total soluble solids in fruit subjected to salinity was not only a result of condensation caused by reduced water uptake, but active transport of photosynthates to the fruit due to increase in sucrose-degrading enzyme activities, especially sucrose synthase”
t0“Tomato”
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