Abstract
Fruits harvested from off-season, greenhouse-grown tomato plants have a poor reputation compared to their in-season, garden-grown counterparts. Presently, there is a gap in knowledge with regard to the role of UV-B radiation (280-315 nm) in determining greenhouse tomato quality. Knowing that UV-B is a powerful elicitor of secondary metabolism and not transmitted through greenhouse glass and some greenhouse plastics, we tested the hypothesis that supplemental UV-B radiation in the greenhouse will impart quality attributes typically associated with garden-grown tomatoes. Environmentally relevant doses of supplemental UV-B radiation did not strongly affect antioxidant compounds of fruits, although the flavonol quercetin-3-O-rutinoside (rutin) significantly increased in response to UV-B. Physicochemical metrics of fruit quality attributes and consumer sensory panels were used to determine if any such differences altered consumer perception of tomato quality. Supplemental UV-A radiation (315-400 nm) pre-harvest treatments enhanced sensory perception of aroma, acidity, and overall approval, suggesting a compelling opportunity to environmentally enhance the flavor of greenhouse-grown tomatoes. The expression of the genes COP1 and HY5 were indicative of adaptation to UV radiation, which explains the lack of marked effects reported in these studies. To our knowledge, these studies represent the first reported use of environmentally relevant doses of UV radiation throughout the reproductive portion of the tomato plant life cycle to positively enhance the sensory and chemical properties of fruits.
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Claims 4
Claim · model-written summary
Supplemental UV-B did not strongly affect fruit antioxidants.
- Taxon
- Tomatoes
Solanum lycopersicumt0 - Treatment
- supplemental UV-B radiatione0
- Outcome
- antioxidant compounds of fruitse0
- Direction
- did not strongly affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Environmentally relevant doses of supplemental UV-B radiation did not strongly affect antioxidant compounds of fruits”
t0“Tomatoes”
Claim · model-written summary
UV-B significantly increased fruit rutin.
- Taxon
- TomatoesSolanum lycopersicumt0
- Treatment
- UV-Be0
- Outcome
- quercetin-3-O-rutinoside (rutin)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the flavonol quercetin-3-O-rutinoside (rutin) significantly increased in response to UV-B”
t0“Tomatoes”
Claim · model-written summary
UV-A enhanced perceived aroma, acidity and overall approval.
- Taxon
- TomatoesSolanum lycopersicumt0
- Treatment
- Supplemental UV-A radiation (315-400 nm) pre-harvest treatmentse0
- Outcome
- sensory perception of aroma, acidity, and overall approvale0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Supplemental UV-A radiation (315-400 nm) pre-harvest treatments enhanced sensory perception of aroma, acidity, and overall approval”
t0“Tomatoes”
Claim · model-written summary
COP1 and HY5 expression indicated adaptation to UV radiation.
- Taxon
- TomatoesSolanum lycopersicumt0
- Gene
- COP1 and HY5e0
- Outcome
- adaptation to UV radiatione0
- Qualifier
- lack of marked effectse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The expression of the genes COP1 and HY5 were indicative of adaptation to UV radiation, which explains the lack of marked effects reported in these studies”
t0“Tomatoes”
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See all 15 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.