Abstract
During recent years, we have advanced our understanding of plant molecular responses to ultraviolet radiation (UV, 280-400 nm); however, how plants respond to UV radiation under different spectral light qualities is poorly understood. In this study, cucumber plants (Cucumis sativus "Lausanna RZ F1") were grown under monochromatic blue, green, red, and broadband white light in combination with UV radiation. The effects of light quality and UV radiation on acclimatory responses were assessed by measuring transcript accumulation of ELONGATED HYPOCOTYL 5 (HY5), CHALCONE SYNTHASE 2 (CHS2), and LIGHT HARVESTING COMPLEX II (LHCII), and the accumulation of flavonoids and hydroxycinnamic acids in the leaves. The growth light backgrounds differentially regulated gene expression and metabolite accumulation. While HY5 and CHS2 transcripts were induced by blue and white light, LHCII was induced by white and red light. Furthermore, UV radiation antagonized the effects of blue, red, green, and white light on transcript accumulation in a gene-dependent manner. Plants grown under blue light with supplementary UV radiation increased phenylalanine, flavonol disaccharide I and caffeic acid contents compared to those exposed only to blue light. UV radiation also induced the accumulation of flavonol disaccharide I and II, ferulic acid hexose and coumaric acid hexose in plants grown under green light. Our findings provide a further understanding of plant responses to UV radiation in combination with different light spectra and contribute to the design of light recipes for horticultural practices that aim to modify plant metabolism and ultimately improve crop quality.
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Claims 10
Claim · model-written summary
Blue and white light induced HY5 transcripts in cucumber.
- Taxon
- cucumber
Cucumis sativust0 - Treatment
- blue and white lighte0
- Gene
- HY5e0
- Outcome
- HY5 and CHS2 transcriptse0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“HY5 and CHS2 transcripts were induced by blue and white light”
t0“cucumber”
Claim · model-written summary
Blue and white light induced CHS2 transcripts in cucumber.
- Taxon
- cucumberCucumis sativust0
- Treatment
- blue and white lighte0
- Gene
- CHS2e0
- Outcome
- HY5 and CHS2 transcriptse0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“HY5 and CHS2 transcripts were induced by blue and white light”
t0“cucumber”
Claim · model-written summary
White and red light induced LHCII transcripts.
- Taxon
- cucumberCucumis sativust0
- Treatment
- white and red lighte0
- Gene
- LHCIIe0
- Outcome
- LHCIIe0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“LHCII was induced by white and red light”
t0“cucumber”
Claim · model-written summary
UV radiation antagonized light effects on transcript accumulation in a gene dependent manner.
- Taxon
- cucumberCucumis sativust0
- Treatment
- UV radiatione0
- Outcome
- transcript accumulatione0
- Direction
- antagonizede0
- Qualifier
- gene-dependent mannere0
- Comparator
- blue, red, green, and white lighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“UV radiation antagonized the effects of blue, red, green, and white light on transcript accumulation in a gene-dependent manner.”
t0“cucumber”
Claim · model-written summary
Supplementary UV increased phenylalanine content under blue light.
- Taxon
- cucumberCucumis sativust0
- Treatment
- supplementary UV radiatione0
- Outcome
- phenylalaninee0
- Direction
- increasede0
- Comparator
- those exposed only to blue lighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants grown under blue light with supplementary UV radiation increased phenylalanine, flavonol disaccharide I and caffeic acid contents compared to those exposed only to blue light.”
t0“cucumber”
Claim · model-written summary
Supplementary UV increased flavonol disaccharide I content under blue light.
- Taxon
- cucumberCucumis sativust0
- Treatment
- supplementary UV radiatione0
- Outcome
- flavonol disaccharide Ie0
- Direction
- increasede0
- Comparator
- those exposed only to blue lighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants grown under blue light with supplementary UV radiation increased phenylalanine, flavonol disaccharide I and caffeic acid contents compared to those exposed only to blue light.”
t0“cucumber”
Claim · model-written summary
Supplementary UV increased caffeic acid content under blue light.
- Taxon
- cucumberCucumis sativust0
- Treatment
- supplementary UV radiatione0
- Outcome
- caffeic acid contentse0
- Direction
- increasede0
- Comparator
- those exposed only to blue lighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants grown under blue light with supplementary UV radiation increased phenylalanine, flavonol disaccharide I and caffeic acid contents compared to those exposed only to blue light.”
t0“cucumber”
Claim · model-written summary
UV under green light induced flavonol disaccharide I and II accumulation.
- Taxon
- cucumberCucumis sativust0
- Treatment
- UV radiatione0
- Outcome
- flavonol disaccharide I and IIe0
- Direction
- inducede0
- Qualifier
- green lighte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“UV radiation also induced the accumulation of flavonol disaccharide I and II, ferulic acid hexose and coumaric acid hexose in plants grown under green light.”
t0“cucumber”
Claim · model-written summary
UV under green light induced ferulic acid hexose accumulation.
- Taxon
- cucumberCucumis sativust0
- Treatment
- UV radiatione0
- Outcome
- ferulic acid hexosee0
- Direction
- inducede0
- Qualifier
- green lighte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“UV radiation also induced the accumulation of flavonol disaccharide I and II, ferulic acid hexose and coumaric acid hexose in plants grown under green light.”
t0“cucumber”
Claim · model-written summary
UV under green light induced coumaric acid hexose accumulation.
- Taxon
- cucumberCucumis sativust0
- Treatment
- UV radiatione0
- Outcome
- coumaric acid hexosee0
- Direction
- inducede0
- Qualifier
- green lighte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“UV radiation also induced the accumulation of flavonol disaccharide I and II, ferulic acid hexose and coumaric acid hexose in plants grown under green light.”
t0“cucumber”
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See all 12 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.