Abstract
Different light qualities affect plant growth and physiological responses, including stomatal openings. However, most researchers have focused on stomatal responses to red and blue light only, and the direct measurement of evapotranspiration has not been examined. Therefore, we quantified the evapotranspiration of sweet basil under various red (R), green (G), and blue (B) combinations using light-emitting diodes (LEDs) and investigated its stomatal responses. Seedlings were subjected to five different spectral treatments for two weeks at a photosynthetic photon flux density of 200 µmol m−2 s−1. The ratios of the RGB light intensities were as follows: R 100% (R100), R:G = 75:25 (R75G25), R:B = 75:25 (R75B25), R:G:B = 60:20:20 (R60G20B20), and R:G:B = 31:42:27 (R31G42B27). During the experiment, the evapotranspiration of the plants was measured using load cells. Although there were no significant differences in growth parameters among the treatments, the photosynthetic rate and stomatal conductance were higher in plants grown under blue LEDs (R75B25, R60G20B20, and R31G42B27) than in the R100 treatment. The amount of water used was different among the treatments (663.5, 726.5, 728.7, 778.0, and 782.1 mL for the R100, R75G25, R60G20B20, R75B25, and R31G42B27 treatments, respectively). The stomatal density was correlated with the blue light intensity (p = 0.0024) and with the combined intensity of green and blue light (p = 0.0029); therefore, green light was considered to promote the stomatal development of plants together with blue light. Overall, different light qualities affected the water use of plants by regulating stomatal conductance, including changes in stomatal density.
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Claims 11
Claim · model-written summary
There were no significant differences in growth parameters of sweet basil among the light treatments.
- Taxon
- Sweet Basil
Ocimum basilicumt0 - Treatment
- Light Qualityt0
- Outcome
- growth parameterse0
- Direction
- no significant differencese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Light Quality Affects Water Use of Sweet Basil”
e0“Although there were no significant differences in growth parameters among the treatments”
Claim · model-written summary
Photosynthetic rate and stomatal conductance were higher in sweet basil grown under blue LEDs (R75B25, R60G20B20, R31G42B27) than under the R100 treatment.
- Taxon
- Sweet BasilOcimum basilicumt0
- Treatment
- blue LEDs (R75B25, R60G20B20, and R31G42B27)e0
- Outcome
- photosynthetic rate and stomatal conductancee0
- Direction
- highere0
- Comparator
- R100 treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Light Quality Affects Water Use of Sweet Basil”
e0“the photosynthetic rate and stomatal conductance were higher in plants grown under blue LEDs (R75B25, R60G20B20, and R31G42B27) than in the R100 treatment”
Claim · model-written summary
Water used by sweet basil under the R100 treatment was 663.5 mL.
- Taxon
- Sweet BasilOcimum basilicumt0
- Treatment
- R100e0
- Outcome
- amount of water usede0
- Value
- 663.5e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Light Quality Affects Water Use of Sweet Basil”
e0“The amount of water used was different among the treatments (663.5, 726.5, 728.7, 778.0, and 782.1 mL for the R100, R75G25, R60G20B20, R75B25, and R31G42B27 treatments, respectively)”
Claim · model-written summary
Water used by sweet basil under the R75G25 treatment was 726.5 mL.
- Taxon
- Sweet BasilOcimum basilicumt0
- Treatment
- R75G25e0
- Outcome
- amount of water usede0
- Value
- 726.5e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Light Quality Affects Water Use of Sweet Basil”
e0“The amount of water used was different among the treatments (663.5, 726.5, 728.7, 778.0, and 782.1 mL for the R100, R75G25, R60G20B20, R75B25, and R31G42B27 treatments, respectively)”
Claim · model-written summary
Water used by sweet basil under the R60G20B20 treatment was 728.7 mL.
- Taxon
- Sweet BasilOcimum basilicumt0
- Treatment
- R60G20B20e0
- Outcome
- amount of water usede0
- Value
- 728.7e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Light Quality Affects Water Use of Sweet Basil”
e0“The amount of water used was different among the treatments (663.5, 726.5, 728.7, 778.0, and 782.1 mL for the R100, R75G25, R60G20B20, R75B25, and R31G42B27 treatments, respectively)”
Claim · model-written summary
Water used by sweet basil under the R75B25 treatment was 778.0 mL.
- Taxon
- Sweet BasilOcimum basilicumt0
- Treatment
- R75B25e0
- Outcome
- amount of water usede0
- Value
- 778.0e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Light Quality Affects Water Use of Sweet Basil”
e0“The amount of water used was different among the treatments (663.5, 726.5, 728.7, 778.0, and 782.1 mL for the R100, R75G25, R60G20B20, R75B25, and R31G42B27 treatments, respectively)”
Claim · model-written summary
Water used by sweet basil under the R31G42B27 treatment was 782.1 mL.
- Taxon
- Sweet BasilOcimum basilicumt0
- Treatment
- R31G42B27e0
- Outcome
- amount of water usede0
- Value
- 782.1e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Light Quality Affects Water Use of Sweet Basil”
e0“The amount of water used was different among the treatments (663.5, 726.5, 728.7, 778.0, and 782.1 mL for the R100, R75G25, R60G20B20, R75B25, and R31G42B27 treatments, respectively)”
Claim · model-written summary
Stomatal density of sweet basil was correlated with blue light intensity (p = 0.0024).
- Taxon
- Sweet BasilOcimum basilicumt0
- Treatment
- blue light intensitye0
- Outcome
- stomatal densitye0
- Qualifier
- p = 0.0024e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Light Quality Affects Water Use of Sweet Basil”
e0“The stomatal density was correlated with the blue light intensity (p = 0.0024) and with the combined intensity of green and blue light (p = 0.0029)”
Claim · model-written summary
Stomatal density of sweet basil was correlated with the combined intensity of green and blue light (p = 0.0029).
- Taxon
- Sweet BasilOcimum basilicumt0
- Treatment
- combined intensity of green and blue lighte0
- Outcome
- stomatal densitye0
- Qualifier
- p = 0.0029e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Light Quality Affects Water Use of Sweet Basil”
e0“The stomatal density was correlated with the blue light intensity (p = 0.0024) and with the combined intensity of green and blue light (p = 0.0029)”
Claim · model-written summary
Green light was considered to promote stomatal development of the plants together with blue light.
- Taxon
- Sweet BasilOcimum basilicumt0
- Treatment
- green lighte0
- Outcome
- stomatal developmente0
- Qualifier
- together with blue lighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Light Quality Affects Water Use of Sweet Basil”
e0“green light was considered to promote the stomatal development of plants together with blue light”
Claim · model-written summary
Different light qualities affected sweet basil water use by regulating stomatal conductance, including changes in stomatal density.
- Taxon
- Sweet BasilOcimum basilicumt0
- Treatment
- different light qualitiese0
- Outcome
- water usee0
- Qualifier
- regulating stomatal conductance, including changes in stomatal densitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Light Quality Affects Water Use of Sweet Basil”
e0“different light qualities affected the water use of plants by regulating stomatal conductance, including changes in stomatal density”
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See all 37 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.