Abstract
Light affects plant growth through assimilate availability and signals regulating development. The effects of light on growth of tomato fruit were studied using cuvettes with light-emitting diodes providing white, red or blue light to individual tomato trusses for different periods during daytime. Hypotheses tested were as follows: (1) light-grown fruits have stronger assimilate sinks than dark-grown fruits, and (2) responses depend on light treatment provided, and fruit development stage. Seven light treatments [dark, 12-h white, 24-h white, 24-h red and 24-h blue light, dark in the first 24 days after anthesis (DAA) followed by 24-h white light until breaker stage, and its reverse] were applied. Observations were made between anthesis and breaker stage at fruit, cell and gene levels. Fruit size and carbohydrate content did not respond to light treatments while cell division was strongly stimulated at the expense of cell expansion by light. The effects of light on cell number and volume were independent of the combination of light color and intensity. Increased cell division and decreased cell volume when fruits were grown in the presence of light were not clearly corroborated by the expression pattern of promoters and inhibitors of cell division and expansion analyzed in this study, implying a strong effect of posttranscriptional regulation. Results suggest the existence of a complex homeostatic regulatory system for fruit growth in which reduced cell division is compensated by enhanced cell expansion.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 8
Claim · model-written summary
Fruit size did not respond to light treatments.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- light treatmentse0
- Outcome
- Fruit sizee0
- Direction
- did not responde0
Not reportedMaterialGeneInteractorInteractor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit size and carbohydrate content did not respond to light treatments”
t0“tomato (Solanum lycopersicum)”
Claim · model-written summary
Fruit carbohydrate content did not respond to light treatments.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- light treatmentse0
- Outcome
- carbohydrate contente0
- Direction
- did not responde0
Not reportedMaterialGeneInteractorInteractor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit size and carbohydrate content did not respond to light treatments”
t0“tomato (Solanum lycopersicum)”
Claim · model-written summary
Light strongly stimulated fruit cell division.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- lighte0
- Outcome
- cell divisione0
- Direction
- strongly stimulatede0
Not reportedMaterialGeneInteractorInteractor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cell division was strongly stimulated at the expense of cell expansion by light”
t0“tomato (Solanum lycopersicum)”
Claim · model-written summary
Light reduced cell expansion in fruit.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- lighte0
- Outcome
- cell expansione0
- Direction
- decreaseinferrede0
Not reportedMaterialGeneInteractorInteractor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cell division was strongly stimulated at the expense of cell expansion by light”
t0“tomato (Solanum lycopersicum)”
Claim · model-written summary
Light effects on cell number and volume were independent of light color and intensity.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- light color and intensitye0
- Outcome
- cell number and volumee0
Not reportedMaterialGeneInteractorInteractor roleComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of light on cell number and volume were independent of the combination of light color and intensity.”
t0“tomato (Solanum lycopersicum)”
Claim · model-written summary
Expression patterns of cell-division and expansion regulators did not clearly corroborate the observed cellular changes.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- lighte0
- Outcome
- expression pattern of promoters and inhibitors of cell division and expansione0
- Direction
- not clearly corroboratede0
Not reportedMaterialGeneInteractorInteractor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased cell division and decreased cell volume when fruits were grown in the presence of light were not clearly corroborated by the expression pattern of promoters and inhibitors of cell division and expansion analyzed in this study”
t0“tomato (Solanum lycopersicum)”
Claim · model-written summary
The authors infer that posttranscriptional regulation strongly affects the cellular response to light.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- strong effecte0
- Qualifier
- posttranscriptional regulatione0
Not reportedMaterialGeneInteractorInteractor roleTreatmentComparatorSettingDirectionValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“implying a strong effect of posttranscriptional regulation”
t0“tomato (Solanum lycopersicum)”
Claim · model-written summary
The authors suggest that enhanced cell expansion compensates for reduced cell division during fruit growth.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- reduced cell division is compensatede0
- Qualifier
- enhanced cell expansione0
Not reportedMaterialGeneInteractorInteractor roleTreatmentComparatorSettingDirectionValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reduced cell division is compensated by enhanced cell expansion”
t0“tomato (Solanum lycopersicum)”
The same questions in other papers
light · cytology · Solanum lycopersicum (tomato)Positive and negative results
2 papers in the same direction as this paper · 1 reporting no difference from an alternative
- no effect
- positive
- positive
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.