Abstract
The objective of this study was to investigate the response of light emitting diodes (LEDs) at different light intensities (70 and 80 for green LEDs, 88 and 238 for red LEDs and 80 and 238 μmol m-2 s-1 for blue LEDs) at three wavelengths in lettuce leaves. Lettuce leaves were exposed to (522 nm), red (639 nm) and blue (470 nm) LEDs of different light intensities. Thylakoid multiprotein complex proteins and photosynthetic metabolism were then investigated. Biomass and photosynthetic parameters increased with an increasing light intensity under blue LED illumination and decreased when illuminated with red and green LEDs with decreased light intensity. The expression of multiprotein complex proteins including PSII-core dimer and PSII-core monomer using blue LEDs illumination was higher at higher light intensity (238 μmol m-2 s-1) and was lowered with decreased light intensity (70-80 μmol m-2 s-1). The responses of chloroplast sub-compartment proteins, including those active in stomatal opening and closing, and leaf physiological responses at different light intensities, indicated induced growth enhancement upon illumination with blue LEDs. High intensity blue LEDs promote plant growth by controlling the integrity of chloroplast proteins that optimize photosynthetic performance in the natural environment.
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Claims 5
Claim · model-written summary
Under blue LEDs, increasing light intensity increased lettuce biomass and photosynthetic parameters.
- Taxon
- Lettuce
Lactuca sativat0 - Treatment
- blue LED illuminatione0
- Outcome
- Biomass and photosynthetic parameterse0
- Direction
- increasede0
- Comparator
- an increasing light intensitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Biomass and photosynthetic parameters increased with an increasing light intensity under blue LED illumination”
t0“Lettuce Leaves”
Claim · model-written summary
Under red and green LEDs, decreased light intensity decreased biomass and photosynthetic parameters.
- Taxon
- LettuceLactuca sativat0
- Treatment
- red and green LEDs with decreased light intensitye0
- Outcome
- Biomass and photosynthetic parameterse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Biomass and photosynthetic parameters increased with an increasing light intensity under blue LED illumination and decreased when illuminated with red and green LEDs with decreased light intensity”
t0“Lettuce Leaves”
Claim · model-written summary
Blue LED illumination at higher light intensity increased PSII-core dimer and monomer expression relative to lower light intensity.
- Taxon
- LettuceLactuca sativat0
- Treatment
- blue LEDs illuminatione0
- Outcome
- expression of multiprotein complex proteins including PSII-core dimer and PSII-core monomere0
- Direction
- highere0
- Value
- 238 μmol m-2 s-1e0
- Comparator
- decreased light intensity (70-80 μmol m-2 s-1)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The expression of multiprotein complex proteins including PSII-core dimer and PSII-core monomer using blue LEDs illumination was higher at higher light intensity (238 μmol m-2 s-1) and was lowered with decreased light intensity (70-80 μmol m-2 s-1)”
t0“Lettuce Leaves”
Claim · model-written summary
Blue LED illumination induced lettuce growth enhancement.
- Taxon
- LettuceLactuca sativat0
- Treatment
- blue LEDse0
- Outcome
- growth enhancemente0
- Direction
- enhancemente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf physiological responses at different light intensities, indicated induced growth enhancement upon illumination with blue LEDs”
t0“Lettuce Leaves”
Claim · model-written summary
The authors attribute high intensity blue LED growth promotion to chloroplast protein integrity and improved photosynthetic performance.
- Taxon
- LettuceLactuca sativat0
- Treatment
- High intensity blue LEDse0
- Outcome
- plant growthe0
- Qualifier
- controlling the integrity of chloroplast proteinse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“High intensity blue LEDs promote plant growth by controlling the integrity of chloroplast proteins that optimize photosynthetic performance in the natural environment”
t0“Lettuce Leaves”
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