Abstract
UV radiation is an underrated radiation currently missing in many horticultural production systems of vegetables in protected cultivation. It can be added e.g., in LED light sources. Using lettuce as a model plant, this study determined whether the use of UVB LEDs is suitable (1) for use in consistent systems (indoor farming) or (2) inconsistent systems (greenhouse). Blue and red LEDs were selected as additional artificial lighting to UVB LEDs. Both approaches led to a reproducible increase of desired flavonol glycosides, such as quercetin-3-O-(6''-O-malonyl)-glucoside or quercetin-3-O-glucuronide and the anthocyanin cyanidin-3-O-(6''-O-malonyl)-glucoside in lettuce. The impact of the consistent UVB treatment is higher with up to tenfold changes than that of the inconsistent UVB treatment in the greenhouse. Varying natural light and temperature conditions in greenhouses might affect the efficiency of the artificial UVB treatment. Here, UVB LEDs have been tested and can be recommended for further development of lighting systems in indoor farming and greenhouse approaches.
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Claims 4
Claim · model-written summary
Consistent UVB treatment increased desired flavonol glycosides and an anthocyanin in lettuce.
- Taxon
- lettuce
Lactuca sativae0 - Treatment
- consistent UVB treatmente1
- Outcome
- desired flavonol glycosidese0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both approaches led to a reproducible increase of desired flavonol glycosides, such as quercetin-3-O-(6''-O-malonyl)-glucoside or quercetin-3-O-glucuronide and the anthocyanin cyanidin-3-O-(6''-O-malonyl)-glucoside in lettuce.”
e1“The impact of the consistent UVB treatment is higher with up to tenfold changes than that of the inconsistent UVB treatment in the greenhouse.”
Claim · model-written summary
Inconsistent UVB treatment increased the named flavonol glycosides and anthocyanin in lettuce.
- Taxon
- lettuceLactuca sativae0
- Treatment
- inconsistent UVB treatmente1
- Outcome
- desired flavonol glycosidese0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both approaches led to a reproducible increase of desired flavonol glycosides, such as quercetin-3-O-(6''-O-malonyl)-glucoside or quercetin-3-O-glucuronide and the anthocyanin cyanidin-3-O-(6''-O-malonyl)-glucoside in lettuce.”
e1“The impact of the consistent UVB treatment is higher with up to tenfold changes than that of the inconsistent UVB treatment in the greenhouse.”
Claim · model-written summary
The consistent UVB treatment had a higher impact, up to tenfold, than inconsistent UVB treatment.
- Taxon
- lettuceLactuca sativat0
- Treatment
- consistent UVB treatmente0
- Outcome
- impacte0
- Direction
- highere0
- Value
- up to tenfold changese0
- Comparator
- inconsistent UVB treatmente0
- Setting
- greenhousee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The impact of the consistent UVB treatment is higher with up to tenfold changes than that of the inconsistent UVB treatment in the greenhouse.”
t0“lettuce”
Claim · model-written summary
The authors recommend UVB LEDs for further lighting system development in indoor farming and greenhouses.
- Taxon
- lettuceLactuca sativat0
- Outcome
- recommended for further development of lighting systems in indoor farming and greenhouse approachese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Here, UVB LEDs have been tested and can be recommended for further development of lighting systems in indoor farming and greenhouse approaches.”
t0“lettuce”
The same questions in other papers
uv · molecular: metabolites · Lactuca sativa (garden lettuce)Positive and negative results
11 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
9 papers more in this group
See all 13 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.