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“light intensities”

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plus 3 earlier · 1920s–1940s

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Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The degree of inhibition was lower at low light intensities than at high light intensities.

Taxon: spinachSpinacia oleraceae2
Treatment: low light intensitiese1
Outcome: degree of inhibitione1
Direction: lowere1
Comparator: high light intensitiese1

Verbatim

e1
“The degree of inhibition was lower at low light intensities than at high light intensities”
✓ located verbatim in the source · abstract, characters 646–736

e2
“in isolated spinach chloroplasts”
✓ located verbatim in the source · abstract, characters 75–107

Title

The Cupric Ion as an Inhibitor of Photosynthetic Electron Transport in Isolated Chloroplasts

Arturo Cedeno-Maldonado; J. A. Swader; Robert L. Heath PLANT PHYSIOLOGY 1972. doi:10.1104/pp.50.6.698

Other claims from this paper (7)

Intervention effect Cu(2+) strongly inhibited uncoupled photosynthetic electron transport in isolated spinach chloroplasts.
Association Cu(2+) inhibition depended on the ratio of chlorophyll to inhibitor in isolated spinach chloroplasts.
Observation Binding of Cu(2+) to chloroplast membranes removed Cu(2+) from solution in isolated spinach chloroplasts.
Intervention effect Preincubation in light increased Cu(2+) inhibition of spinach chloroplasts.
Intervention effect Preincubation in the dark decreased Cu(2+) inhibition of spinach chloroplasts.
Association Photosystem I was more resistant to inhibition than photosystem II in spinach chloroplasts.
Observation The most sensitive site to the inhibitor was the oxidizing side of photosystem II.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Kohlrabi anthocyanin concentration was greater at higher than lower light intensities.

Taxon: kohlrabiBrassica oleracea var. gongylodese0
Treatment: increasing light intensitiese0
Outcome: total concentration of anthocyaninse0
Direction: greatere0
Comparator: lower light intensitiese0

Verbatim

e0
“For kohlrabi, with increasing light intensities, the total concentration of anthocyanins was greater compared with those grown under lower light intensities”
✓ located verbatim in the source · abstract, characters 1786–1942

Title

Light Intensity and Light Quality from Sole-source Light-emitting Diodes Impact Phytochemical Concentrations within Brassica Microgreens

Joshua K. Craver; Joshua R. Gerovac; Roberto G. Lopez; et al. Journal of the American Society for Horticultural Science 2017. doi:10.21273/jashs03830-16

Other claims from this paper (8)

Intervention effect Total carotenoids declined significantly with increasing light intensity in mizuna microgreens.
Intervention effect Total carotenoids declined significantly with increasing light intensity in mustard microgreens.
Intervention effect Kohlrabi total integrated chlorophyll was higher under R 87 :B 13 than R 84 :FR 7 :B 9.
Intervention effect Mustard total integrated chlorophyll was higher under R 87 :B 13 than R 74 :G 18 :B 8.
Intervention effect At 315 µmol·m −2 ·s −1, R 87 :B 13 gave significantly higher kohlrabi anthocyanins than R 74 :G 18 :B 8.
Intervention effect At 315 µmol·m −2 ·s −1, R 84 :FR 7 :B 9 gave significantly higher kohlrabi anthocyanins than R 74 :G 18 :B 8.
Intervention effect At 105 µmol·m −2 ·s −1, kohlrabi phenolics were significantly greater under R 84 :FR 7 :B 9 than R 74 :G 18 :B 8.
Intervention effect Light intensity had no statistically significant association with kohlrabi total phenolic concentration.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Higher light intensities increased monstera biomass.

Taxon: monsteraMonsterae0
Treatment: higher light intensitiese0
Outcome: monstera plantse0
Direction: highere0

Not reportedComparator

Verbatim

e0
“similar to monstera plants exposed to higher light intensities”
✓ located verbatim in the source · abstract, characters 552–614

Title

Growth of maize and monstera following root exposure to red or blue light from light-emitting diodes

Hiromi Ikeura; Daisuke Takagi; Ryusuke Kimura; et al. The Journal of Horticultural Science and Biotechnology 2025. doi:10.1080/14620316.2025.2530723

Other claims from this paper (6)

Intervention effect Red LED root exposure increased maize shoot and root biomass.
Intervention effect LED treatment significantly decreased root water potential.
Intervention effect LED light increased root glucose relative to controls.
Intervention effect LED light increased root potassium ions relative to controls.
Intervention effect Red LED light had greater glucose and potassium effects than blue light.
Observation The authors conclude red root LED exposure accelerates root and shoot growth.

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Sassafras photosynthesizes efficiently at low light intensities.

Taxon: SassafrasSassafrase1
Treatment: low light intensitiese1
Outcome: photosynthesizes efficientlye1

Verbatim

e1
“Sassafras photosynthesizes efficiently under high plant water stress and at low light intensities”
✓ located verbatim in the source · abstract, characters 196–293

Title

Photosynthetic and Respiratory Rates of Sassafras albidum

F. A. Bazzaz; Valerie Paape; W. R. Boggess Forest Science 1972. doi:10.1093/forestscience/18.3.218

Other claims from this paper (2)

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Regel privet tolerated all tested light intensities.

Taxon: Regel privete0
Outcome: tolerante0
Qualifier: all light intensities usede0

Verbatim

e0
“Regel privet was tolerant of all light intensities used”
✓ located verbatim in the source · abstract, characters 1785–1840

Title

LIGHT INTENSITY AS IT AFFECTS GROWTH AND BRANCHING OF THREE WOODY PLANT SPECIES (HETEROPHYLLOUS, EUONYMUS, BIFURCATION RATIO)

Gary W. Knox Purdue e-Pubs (Purdue University System) 1984

Other claims from this paper (16)

Intervention effect Low light produced more leaf primordia in terminal buds of Euonymus.
Association Euonymus bud primordia number did not correspond to next-year shoot leaf number.
Intervention effect Euonymus in full sunlight had the greatest stem and root soluble sugars and starch.
Intervention effect Light did not influence bud morphology in privet.
Intervention effect Light did not influence stem and root soluble sugars and starch in privet.
Intervention effect Light did not influence bud morphology in viburnum.
Intervention effect Light did not influence stem and root soluble sugars and starch in viburnum.
Intervention effect Viburnum dry weights were greatest under 53%, 70% and 100% light after one season.
Association Prior-year light strongly affected second-season plant dry weight.
Intervention effect Viburnum grown in full sun in 1982 had the greatest dry weights in 1983.
Intervention effect Privet shaded in 1982 had the greatest shoot dry weights in 1983 regardless of 1983 light.
Intervention effect Full sun in 1982 increased viburnum branch number, branch length and internode length in 1983.
Intervention effect Privet in 100% light in 1983 was more branched than shaded plants.
Observation Willowwood viburnum tolerated 53% to 100% light.
Intervention effect Light intensity did not significantly affect Euonymus growth.
Recommendation The authors suggest varying light to improve growth and branching and shorten time to sale.

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

High light intensities were required regardless of daylength.

Taxon: GladiolusGladiolust0
Outcome: high light intensities, independent of daylength, are requirede0

Verbatim

e0
“high light intensities, independent of daylength, are required”
✓ located verbatim in the source · abstract, characters 178–240

t0
“Gladiolus”
✓ located verbatim in the source · title, characters 93–102

Title

Participation of Light and Temperature Fluctuations in the Induction of Contractile Roots of Gladiolus

B. Jacoby; A. H. Halevy Botanical Gazette 1970. doi:10.1086/336514

Other claims from this paper (3)

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Seedlings under 25%, 50% and 75% light intensities gave the highest biomass accumulation.

Taxon: Garcinia kolaGarcinia kolat0
Treatment: 25%, 50% and 75% light intensitiese3
Outcome: biomass accumulatione3
Direction: higheste3

Not reportedComparator

Verbatim

t0
“Garcinia kola”
✓ located verbatim in the source · title, characters 23–36

e3
“Seedlings under 25%, 50% and 75% light intensities gave the highest biomass accumulation”
✓ located verbatim in the source · abstract, characters 1122–1210

Title

Biomass accumulated by Garcinia kola Heckel. seedlings under different light intensities

OT Bolanle–Ojo; JO Ogunade; OA Williams; et al. Journal of Agriculture Forestry and the Social Sciences 2016. doi:10.4314/joafss.v12i2.16

Other claims from this paper (7)

Intervention effect Leaf dry weight of Garcinia kola seedlings was not significantly affected by light intensities.
Intervention effect Stem, root and total dry weight of Garcinia kola seedlings were significantly affected by light intensity.
Intervention effect Biomass accumulated under 5% light intensity was very low compared with other light conditions.
Observation Leaf dry weight of Garcinia kola seedlings ranged from 1.87 to 5.07 g after 24 weeks.
Observation Stem dry weight of Garcinia kola seedlings ranged from 0.83 to 3.04 g.
Observation Root dry weight of Garcinia kola seedlings ranged from 1.60 to 9.90 g.
Observation Total dry weight of Garcinia kola seedlings ranged from 4.30 to 15.63 g.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Root length increased at higher light intensities.

Taxon: red ricet0
Treatment: higher light intensitiese0
Outcome: root lengthe0
Direction: increasede0

Not reportedComparator

Verbatim

e0
“At higher light intensities, shoot length decreased, whereas root length, dry mass and number of tillers increased”
✓ located verbatim in the source · abstract, characters 650–764

t0
“red rice”
✓ located verbatim in the source · title, characters 73–81

Title

Seed vigor, antioxidant metabolism and initial growth characteristics of red rice seedlings under different light intensities

Tiago Zanatta Aumonde; Tiago Pedó; Junior Borella; et al. Acta Botanica Brasilica 2013. doi:10.1590/s0102-33062013000200007

Other claims from this paper (11)

Intervention effect Shoot length decreased at higher light intensities.
Intervention effect Dry mass increased at higher light intensities.
Intervention effect Tiller number increased at higher light intensities.
Intervention effect Leaf area was greatest at 65% light.
Intervention effect Leaf area ratio, leaf mass ratio, specific leaf area and shoot/root ratio were lowest at 100% light.
Intervention effect Light intensity had qualitative and quantitative effects on chlorophyll contents.
Intervention effect SOD activity was higher at lower light levels.
Intervention effect CAT activity was higher at lower light levels.
Intervention effect APX activity showed the inverse light response to SOD and CAT.
Intervention effect POX activity showed the inverse light response to SOD and CAT.
Intervention effect Extremes of light availability negatively affected initial growth and photosynthetic pigments.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Dry mass increased at higher light intensities.

Taxon: red ricet0
Treatment: higher light intensitiese0
Outcome: dry masse0
Direction: increasede0

Not reportedComparator

Verbatim

e0
“At higher light intensities, shoot length decreased, whereas root length, dry mass and number of tillers increased”
✓ located verbatim in the source · abstract, characters 650–764

t0
“red rice”
✓ located verbatim in the source · title, characters 73–81

Title

Seed vigor, antioxidant metabolism and initial growth characteristics of red rice seedlings under different light intensities

Tiago Zanatta Aumonde; Tiago Pedó; Junior Borella; et al. Acta Botanica Brasilica 2013. doi:10.1590/s0102-33062013000200007

Other claims from this paper (11)

Intervention effect Shoot length decreased at higher light intensities.
Intervention effect Root length increased at higher light intensities.
Intervention effect Tiller number increased at higher light intensities.
Intervention effect Leaf area was greatest at 65% light.
Intervention effect Leaf area ratio, leaf mass ratio, specific leaf area and shoot/root ratio were lowest at 100% light.
Intervention effect Light intensity had qualitative and quantitative effects on chlorophyll contents.
Intervention effect SOD activity was higher at lower light levels.
Intervention effect CAT activity was higher at lower light levels.
Intervention effect APX activity showed the inverse light response to SOD and CAT.
Intervention effect POX activity showed the inverse light response to SOD and CAT.
Intervention effect Extremes of light availability negatively affected initial growth and photosynthetic pigments.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Tiller number increased at higher light intensities.

Taxon: red ricet0
Treatment: higher light intensitiese0
Outcome: number of tillerse0
Direction: increasede0

Not reportedComparator

Verbatim

e0
“At higher light intensities, shoot length decreased, whereas root length, dry mass and number of tillers increased”
✓ located verbatim in the source · abstract, characters 650–764

t0
“red rice”
✓ located verbatim in the source · title, characters 73–81

Title

Seed vigor, antioxidant metabolism and initial growth characteristics of red rice seedlings under different light intensities

Tiago Zanatta Aumonde; Tiago Pedó; Junior Borella; et al. Acta Botanica Brasilica 2013. doi:10.1590/s0102-33062013000200007

Other claims from this paper (11)

Intervention effect Shoot length decreased at higher light intensities.
Intervention effect Root length increased at higher light intensities.
Intervention effect Dry mass increased at higher light intensities.
Intervention effect Leaf area was greatest at 65% light.
Intervention effect Leaf area ratio, leaf mass ratio, specific leaf area and shoot/root ratio were lowest at 100% light.
Intervention effect Light intensity had qualitative and quantitative effects on chlorophyll contents.
Intervention effect SOD activity was higher at lower light levels.
Intervention effect CAT activity was higher at lower light levels.
Intervention effect APX activity showed the inverse light response to SOD and CAT.
Intervention effect POX activity showed the inverse light response to SOD and CAT.
Intervention effect Extremes of light availability negatively affected initial growth and photosynthetic pigments.

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