Abstract
Light-emitting diodes (LEDs) have emerged as efficient light sources for promoting in vitro plant growth and primary and secondary metabolite biosynthesis. This study investigated the effects of blue, red, and white-red LED lights on plant biomass growth, photosynthetic pigments, soluble sugars, phenolic compounds, the production of Amaryllidaceae alkaloids, and the activities of antioxidant enzymes in Leucojum aestivum L. cultures. A white fluorescent light was used as a control. The plants that were grown under white-red and red light showed the highest fresh biomass increments. The blue light stimulated chlorophyll a, carotenoid, and flavonoid production. The white-red and blue lights were favourable for phenolic acid biosynthesis. Chlorogenic, p-hydroxybenzoic, caffeic, syringic, p-coumaric, ferulic, sinapic, and benzoic acids were identified in plant materials, with ferulic acid dominating. The blue light had a significant beneficial effect both on galanthamine (4.67 µg/g of dry weight (DW)) and lycorine (115 µg/g DW) biosynthesis. Red light treatment increased catalase and superoxide dismutase activities, and high catalase activity was also observed in plants treated with white-red and blue light. This is the first report to provide evidence of the effects of LED light on the biosynthesis of phenolic acid and Amaryllidaceae alkaloids in L. aestivum cultures, which is of pharmacological importance and can propose new strategies for their production.
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Claims 11
Claim · model-written summary
White-red light produced the highest fresh biomass increment.
- Taxon
- plantsViridiplantaee0
- Treatment
- white-rede0
- Outcome
- fresh biomass incrementse0
- Direction
- higheste0
Not reportedComparator
Verbatim
e0“The plants that were grown under white-red and red light showed the highest fresh biomass increments.”
Claim · model-written summary
Red light produced the highest fresh biomass increment.
- Taxon
- plantsViridiplantaee0
- Treatment
- red lighte0
- Outcome
- fresh biomass incrementse0
- Direction
- higheste0
Not reportedComparator
Verbatim
e0“The plants that were grown under white-red and red light showed the highest fresh biomass increments.”
Claim · model-written summary
Blue light stimulated chlorophyll a, carotenoid and flavonoid production.
- Treatment
- blue lighte0
- Outcome
- chlorophyll a, carotenoid, and flavonoid productione0
- Direction
- stimulatede0
Not reportedTaxonComparator
Verbatim
e0“The blue light stimulated chlorophyll a, carotenoid, and flavonoid production.”
Claim · model-written summary
White-red light favored phenolic acid biosynthesis.
Not reportedTaxonComparator
Verbatim
e0“The white-red and blue lights were favourable for phenolic acid biosynthesis.”
Claim · model-written summary
Blue light favored phenolic acid biosynthesis.
Not reportedTaxonComparator
Verbatim
e0“The white-red and blue lights were favourable for phenolic acid biosynthesis.”
Claim · model-written summary
The plant material contained eight identified phenolic acids, dominated by ferulic acid.
- Outcome
- Chlorogenic, p-hydroxybenzoic, caffeic, syringic, p-coumaric, ferulic, sinapic, and benzoic acidse0
- Direction
- ferulic acid dominatinge0
Not reportedTaxon
Verbatim
e0“Chlorogenic, p-hydroxybenzoic, caffeic, syringic, p-coumaric, ferulic, sinapic, and benzoic acids were identified in plant materials, with ferulic acid dominating.”
Claim · model-written summary
Blue light benefited galanthamine biosynthesis to 4.67 µg/g dry weight.
Not reportedTaxonComparator
Verbatim
e0“The blue light had a significant beneficial effect both on galanthamine (4.67 µg/g of dry weight (DW)) and lycorine (115 µg/g DW) biosynthesis.”
Claim · model-written summary
Blue light benefited lycorine biosynthesis to 115 µg/g DW.
Not reportedTaxonComparator
Verbatim
e0“The blue light had a significant beneficial effect both on galanthamine (4.67 µg/g of dry weight (DW)) and lycorine (115 µg/g DW) biosynthesis.”
Claim · model-written summary
Red light increased catalase and superoxide dismutase activities.
- Treatment
- Red light treatmente0
- Outcome
- catalase and superoxide dismutase activitiese0
- Direction
- increasede0
Not reportedTaxonComparator
Verbatim
e0“Red light treatment increased catalase and superoxide dismutase activities”
Claim · model-written summary
White-red light yielded high catalase activity.
- Taxon
- plantsViridiplantaee0
- Treatment
- white-rede0
- Outcome
- catalase activitye0
- Direction
- highe0
Not reportedComparator
Verbatim
e0“high catalase activity was also observed in plants treated with white-red and blue light”
Claim · model-written summary
Blue light yielded high catalase activity.
- Taxon
- plantsViridiplantaee0
- Treatment
- blue lighte0
- Outcome
- catalase activitye0
- Direction
- highe0
Not reportedComparator
Verbatim
e0“high catalase activity was also observed in plants treated with white-red and blue light”
The same questions in other papers
light · growth · Viridiplantae (plants)Positive and negative results
17 papers in the same direction as this paper · 7 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- negative
- no effect
22 papers more in this group
See all 26 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.