Abstract
Light is one of the most important environmental factors influencing plant growth and development. Light-emitting diodes (LEDs) are are a promising alternative to conventional light sources for plant tissue cultures. Combined red (R) and blue (B) LEDs are suitable for the production of many plant species. However, few studies have examined the effects of different R:B ratios on Gerbera jamesonii under controlled conditions. G. jamesonii plantlets were grown in controlled conditions under different ratios of discreet and blue light wavelengths provided by programmable LEDs. The effects of the different LED treatments on various morphological indices, photosynthetic parameters, soluble sugar and protein contents, and antioxidant enzyme activities were analyzed. Growth under monochromatic red light resulted in the tallest plantlets and longest stomata, and most promoted soluble content and intercellular CO2 concentration (Ci). Growth under monochromatic blue light promoted the highest levels of soluble protein, chlorophyll a (chlorophyll a (Chl a), and chlorophyll b (chlorophyll b (Chl b). An R:B ratio of 6:4 was the ideal LED treatment for enhancing leaf length, root length, and peroxidase activity. Growth under R:B = 7:3 promoted the number of leaves, leaf width, number of roots, superoxide dismutase, and catalase activities, chlorophyll synthesis, and the accumulation of Chl a and Chl b and led to the highest fluorescence parameters. With the exception of three physiological indicators, other indicators growth under R:B = 7:3 were better than under other tested ratios, implying that R:B = 7:3 represents the ideal LED treatment for improving G. jamesonii growth and photosynthetic activities under controlled conditions.
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Claims 8
Claim · model-written summary
Monochromatic red light produced the tallest plantlets and longest stomata.
- Taxon
- Gerbera jamesonii
Gerbera jamesoniit0 - Treatment
- monochromatic red lighte0
- Outcome
- tallest plantlets and longest stomatae0
- Direction
- talleste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth under monochromatic red light resulted in the tallest plantlets and longest stomata”
t0“Gerbera jamesonii”
Claim · model-written summary
Monochromatic red light most promoted soluble content and intercellular CO2 concentration.
- Taxon
- Gerbera jamesoniiGerbera jamesoniit0
- Treatment
- Redt0
- Outcome
- soluble content and intercellular CO2 concentratione0
- Direction
- most promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“and most promoted soluble content and intercellular CO2 concentration (Ci)”
t0“Red and Blue Light Alters the Growth, Antioxidant Status, and Photochemical Potential of in Vitro-Grown Gerbera jamesonii Plantlets”
Claim · model-written summary
Monochromatic blue light gave the highest soluble protein and chlorophyll a and b.
- Taxon
- Gerbera jamesoniiGerbera jamesoniit0
- Treatment
- monochromatic blue lighte0
- Outcome
- soluble protein, chlorophyll a (chlorophyll a (Chl a), and chlorophyll be0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth under monochromatic blue light promoted the highest levels of soluble protein, chlorophyll a (chlorophyll a (Chl a), and chlorophyll b (chlorophyll b (Chl b)”
t0“Gerbera jamesonii”
Claim · model-written summary
An R:B ratio of 6:4 enhanced leaf and root length and peroxidase activity.
- Taxon
- Gerbera jamesoniiGerbera jamesoniit0
- Treatment
- R:B ratio of 6:4e0
- Outcome
- leaf length, root length, and peroxidase activitye0
- Direction
- enhancinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An R:B ratio of 6:4 was the ideal LED treatment for enhancing leaf length, root length, and peroxidase activity”
t0“Gerbera jamesonii”
Claim · model-written summary
R:B = 7:3 promoted leaf number and width and root number.
- Taxon
- Gerbera jamesoniiGerbera jamesoniit0
- Treatment
- R:B = 7:3e0
- Outcome
- number of leaves, leaf width, number of rootse0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth under R:B = 7:3 promoted the number of leaves, leaf width, number of roots”
t0“Gerbera jamesonii”
Claim · model-written summary
R:B = 7:3 promoted superoxide dismutase and catalase activities and chlorophyll synthesis.
- Taxon
- Gerbera jamesoniiGerbera jamesoniit0
- Treatment
- Red and Blue Lightt0
- Outcome
- superoxide dismutase, and catalase activities, chlorophyll synthesise0
- Direction
- increaseinferrede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“superoxide dismutase, and catalase activities, chlorophyll synthesis”
t0“Red and Blue Light Alters the Growth, Antioxidant Status, and Photochemical Potential of in Vitro-Grown Gerbera jamesonii Plantlets”
Claim · model-written summary
R:B = 7:3 promoted Chl a and Chl b accumulation and gave the highest fluorescence parameters.
- Taxon
- Gerbera jamesoniiGerbera jamesoniit0
- Treatment
- Red and Blue Lightt0
- Outcome
- accumulation of Chl a and Chl b and led to the highest fluorescence parameterse0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the accumulation of Chl a and Chl b and led to the highest fluorescence parameters”
t0“Red and Blue Light Alters the Growth, Antioxidant Status, and Photochemical Potential of in Vitro-Grown Gerbera jamesonii Plantlets”
Claim · model-written summary
The authors judged R:B = 7:3 ideal for improving plantlet growth and photosynthetic activities.
- Taxon
- G. jamesoniiGerbera jamesoniie0
- Treatment
- R:B = 7:3e0
- Outcome
- ideal LED treatment for improving G. jamesonii growth and photosynthetic activitiese0
- Setting
- controlled conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“R:B = 7:3 represents the ideal LED treatment for improving G. jamesonii growth and photosynthetic activities under controlled conditions”
The same questions in other papers
light · physiology: pigments · Gerbera jamesonii (Transvaal daisy)Positive and negative results
1 in the opposite direction
- negative
light · molecular: metabolites · Gerbera jamesonii (Transvaal daisy)Results agree
1 paper in the same direction as this paper
- positive
light · physiology: gas exchange · Gerbera jamesonii (Transvaal daisy)Results agree
1 paper in the same direction as this paper
- positive
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.