Abstract
In greenhouse tomato production, the lower canopy of tomato plants is often shaded by the neighbouring tomato plants. Supplementary lighting can be used to provide sufficient light energy for plants. Red light is regarded as the most efficient spectrum in supplementary lighting. Whether and how supplementary red light in the ambient of sunlight affect the ripening of tomato remain to be elucidated. In this research, the impacts of supplementary red light on tomato ripening were examined by comparing the impacts of supplementary red light on ripening-related regulators, ethylene synthesis, ethylene signaling, carotenoid synthesis and light signaling in Micro-Tom wild type tomato fruit and ripening-inhibitor (rin) mutant. Supplementary red light did not affect the fruit ripening of rin mutant, because the deficiency of SlRIN resulted in down-regulation of genes encoding ripening-related regulators and suppression of ethylene biosynthesis. The wild type tomato fruit under supplementary red light showed accelerated color transition during ripening, which was associated with the increased expressions of genes encoding ripening-related regulators and ethylene biosynthesis. The increased expressions of genes encoding phytochrome in wild type tomato fruit under supplementary red light might reduce the level of phytochrome-interacting factors, resulting in higher activation of the phytoene synthase and overaccumulation of phytoene. Supplementary red light in ambient sunlight resulted in the accumulation of phytoene and the earlier ripening in tomato fruit, which depended on ethylene production.
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Claims 9
Claim · model-written summary
Supplementary red light did not affect ripening in rin mutant fruit.
- Taxon
- tomato
Solanum lycopersicumt0 - Material
- rin mutante0
- Treatment
- Supplementary red lighte0
- Outcome
- fruit ripeninge0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Supplementary red light did not affect the fruit ripening of rin mutant”
t0“tomato”
Claim · model-written summary
SlRIN deficiency down-regulated ripening regulator genes.
- Taxon
- tomatoSolanum lycopersicumt0
- Gene
- SlRINe0
- Outcome
- genes encoding ripening-related regulatorse0
- Direction
- down-regulatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“deficiency of SlRIN resulted in down-regulation of genes encoding ripening-related regulators”
t0“tomato”
Claim · model-written summary
SlRIN deficiency suppressed ethylene biosynthesis.
- Taxon
- tomatoSolanum lycopersicumt0
- Gene
- SlRINe0
- Outcome
- ethylene biosynthesise0
- Direction
- suppressione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“deficiency of SlRIN resulted in down-regulation of genes encoding ripening-related regulators and suppression of ethylene biosynthesis”
t0“tomato”
Claim · model-written summary
Red light accelerated color transition in wild-type fruit.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- wild typee0
- Treatment
- supplementary red lighte0
- Outcome
- color transition during ripeninge0
- Direction
- acceleratede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wild type tomato fruit under supplementary red light showed accelerated color transition during ripening”
Claim · model-written summary
Accelerated ripening was associated with increased expression of ripening regulator and ethylene biosynthesis genes.
- Taxon
- tomatoSolanum lycopersicumt0
- Gene
- genes encoding ripening-related regulators and ethylene biosynthesise0
- Outcome
- increased expressionse0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“which was associated with the increased expressions of genes encoding ripening-related regulators and ethylene biosynthesis”
t0“tomato”
Claim · model-written summary
Red light increased phytochrome gene expression in wild-type fruit.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- wild typee0
- Treatment
- supplementary red lighte0
- Outcome
- expressions of genes encoding phytochromee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased expressions of genes encoding phytochrome in wild type tomato fruit under supplementary red light”
Claim · model-written summary
The authors propose that phytochrome expression reduces phytochrome-interacting factors and activates phytoene synthase.
- Taxon
- tomatoSolanum lycopersicumt0
- Gene
- phytochrome-interacting factorse0
- Outcome
- activation of the phytoene synthasee0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“might reduce the level of phytochrome-interacting factors, resulting in higher activation of the phytoene synthase”
t0“tomato”
Claim · model-written summary
Red light caused phytoene accumulation in tomato fruit.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- Supplementary red light in ambient sunlighte0
- Outcome
- accumulation of phytoenee0
- Direction
- accumulatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Supplementary red light in ambient sunlight resulted in the accumulation of phytoene and the earlier ripening in tomato fruit”
Claim · model-written summary
Red light caused earlier tomato fruit ripening, dependent on ethylene production.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- Supplementary red light in ambient sunlighte0
- Outcome
- ripening in tomato fruite0
- Direction
- earliere0
- Qualifier
- depended on ethylene productione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Supplementary red light in ambient sunlight resulted in the accumulation of phytoene and the earlier ripening in tomato fruit, which depended on ethylene production”
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See all 71 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.