Search claims · PlantClaims

Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Hydro- and CaCl2-priming were associated with a 56% decrease in electrolyte leakage in salt-stressed lettuce.

Taxon: lettuceLactuca sativae4
Treatment: hydro- and CaCl2-primede4
Outcome: electrolyte leakagee4
Direction: decreasee4
Value: 56%e4

Verbatim

e0
“Priming treatments significantly increased lettuce's fresh mass by 22%–61% under salt stress”
✓ located verbatim in the source · abstract, characters 480–572

e4
“The accumulation of sugars (up to 50%) in hydro- and CaCl2-primed lettuce led to a 56% decrease in electrolyte leakage and membrane damage”
✓ located verbatim in the source · abstract, characters 1023–1161

Title

Seed priming attenuates the impact of salt stress and enhances lettuce yields

Bikash Adhikari; Omolayo J. Olorunwa; Thomas E. Horgan; et al. Journal of Agriculture and Food Research 2023. doi:10.1016/j.jafr.2023.100947

Other claims from this paper (11)

Intervention effect Priming increased lettuce fresh mass by 22% to 61% under salt stress.
Intervention effect Hydro-priming gave the largest increase in lettuce root mass (109%).
Intervention effect Hydro-priming made lettuce root length 38% higher.
Intervention effect Hydro-priming increased lettuce root surface area by 35%.
Intervention effect Hydro-priming increased lettuce root volume by 25% to 40%.
Intervention effect Hydro-priming increased the number of root tips, forks and crossings by 25% to 40%.
Intervention effect Hydro-primed lettuce had higher gas exchange rates than the non-primed control.
Intervention effect Hydro-primed seedlings had the highest proline accumulation (105%) under salt stress.
Observation Sugar accumulation in hydro- and CaCl2-primed lettuce reached up to 50%.
Association Hydro-primed seedlings had a higher positive/negative edge ratio in the correlation network, which the authors read as greater salt resilience.
Recommendation Hydro-priming is recommended as a cost-effective, quick and affordable priming method for lettuce.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Foliar stevia leaf extract tended to decrease nitrate content of lettuce.

Taxon: lettuceLactuca sativae2
Treatment: Foliar treatment with stevia extractse2
Outcome: content of nitratese1
Direction: decreasee1
Qualifier: a tendency towardse1

Not reportedComparator

Verbatim

e1
“and a tendency towards a decrease in the content of nitrates was observed”
✓ located verbatim in the source · abstract, characters 2369–2442

e2
“Foliar treatment with stevia extracts increased the mass of lettuce plants, as well as their biological value”
✓ located verbatim in the source · abstract, characters 2171–2280

Title

The possibility of using of an aqueous extract from stevia (Stevia rebaudiana Bertoni) leaves as a biostimulant of plant growth in photoculture

N. G. Sinyavina; A. A. Kochetov; K. V. Egorova; et al. VEGETABLE CROPS OF RUSSIA 2020. doi:10.18619/2072-9146-2020-6-31-35

Other claims from this paper (9)

Intervention effect Foliar stevia leaf extract did not significantly affect the size and weight of radish root crops.
Intervention effect Foliar stevia leaf extract increased radish yield through fewer bolting plants.
Intervention effect Foliar stevia leaf extract significantly decreased bolting of radish by 34-51% in all treatment options.
Intervention effect Dilution 1:100 of the stevia leaf extract increased marketable radish root crop yield by 20%.
Intervention effect Dilution 1:100 of the stevia leaf extract increased radish yield per square metre by 25%.
Intervention effect Foliar stevia leaf extract increased the mass of lettuce plants and their biological value.
Intervention effect Foliar stevia leaf extract significantly increased photosynthetic pigment, sugar and vitamin C content of lettuce.
Recommendation The authors recommend foliar application of the stevia leaf extract at 1:50 and 1:100 dilutions.
Recommendation The authors conclude the stevia leaf extract can be used as a safe plant growth stimulant.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Mixed red and blue light produced a more pronounced nitrate decrease than monochromatic red light.

Taxon: lettuceLactuca sativae0
Treatment: mixed red and blue lighte0
Outcome: nitrate concentratione0
Direction: decreasee0
Comparator: monochromatic red light treatmente0

Verbatim

e0
“Compared with monochromatic red light treatment, the decrease in nitrate concentration and increase in soluble sugar content in lettuce under mixed red and blue light were more pronounced”
✓ located verbatim in the source · abstract, characters 448–635

Title

REDUCING NITRATE CONTENT IN LETTUCE BY PRE-HARVEST CONTINUOUS LIGHT DELIVERED BY RED AND BLUE LIGHT-EMITTING DIODES

Zhou Wanlai; Liu Wenke; Yang Qichang Journal of Plant Nutrition 2012. doi:10.1080/01904167.2012.748069

Other claims from this paper (6)

Intervention effect Continuous light decreased leaf blade nitrate concentration by 1648.0–2061.1 mg kg−1.
Intervention effect Continuous light decreased petiole nitrate concentration by 962.9–2090.3 mg kg−1.
Intervention effect Continuous light increased soluble sugar content.
Intervention effect Mixed red and blue light produced a more pronounced soluble sugar increase than monochromatic red light.
Intervention effect The R/B ratio of 4 gave the lowest nitrate concentration.
Recommendation The authors concluded that 48 h continuous LED light could reduce nitrate accumulation in lettuce.

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

In the field, RF-EMF-exposed lettuce showed a significant and systemic decrease in photosynthetic efficiency compared with control groups.

Taxon: lettuceLactuca sativae3
Treatment: RF-EMFe3
Outcome: photosynthetic efficiencye3
Direction: decreasee3
Comparator: control groupse3
Setting: in the fielde3

Verbatim

e3
“lettuce plants exposed to RF-EMF in the field showed a significant and systemic decrease in photosynthetic efficiency and accelerated flowering time compared to the control groups”
✓ located verbatim in the source · abstract, characters 692–871

Title

Impacts of Radio-Frequency Electromagnetic Field (RF-EMF) on Lettuce (Lactuca sativa)—Evidence for RF-EMF Interference with Plant Stress Responses

Nam Trung Tran; Luca Jokic; Julian Keller; et al. Plants 2023. doi:10.3390/plants12051082

Other claims from this paper (7)

Intervention effect Under greenhouse conditions, RF-EMF exposure had only a minor impact on fast chlorophyll fluorescence kinetics in lettuce.
Intervention effect Under greenhouse conditions, RF-EMF exposure had no effect on lettuce flowering time.
Intervention effect In the field, RF-EMF-exposed lettuce flowered earlier than control groups.
Intervention effect Gene expression of violaxanthin de-epoxidase (VDE) was significantly down-regulated in RF-EMF-exposed lettuce plants.
Intervention effect Gene expression of zeaxanthin epoxidase (ZEP) was significantly down-regulated in RF-EMF-exposed lettuce plants.
Intervention effect RF-EMF-exposed lettuce plants had lower FV/FM and NPQ than control plants under light stress conditions.
Association RF-EMF might interfere with lettuce plant stress responses and reduce plant stress tolerance, according to the authors.

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Iso-osmotic salt concentrations caused only a moderate decrease of fresh yield in lettuce

Taxon: lettuceLactuca sativae1
Treatment: iso-osmotic salt concentrationse5
Outcome: fresh yielde5
Direction: moderate decreasee5
Qualifier: onlye5

Verbatim

e1
“green and red lettuce (Lactuca sativa L.) plants”
✓ located verbatim in the source · abstract, characters 478–526

e5
“The treatments with iso-osmotic salt concentrations did not affect K and Mg ion contents but further increased LAA and resulted only in a moderate decrease of fresh yield”
✓ located verbatim in the source · abstract, characters 1551–1721

Title

Regulated Salinity Eustress in a Floating Hydroponic Module of Sequentially Harvested Lettuce Modulates Phytochemical Constitution, Plant Resilience, and Post-Harvest Nutraceutical Quality

Petronia Carillo; Georgios A. Soteriou; Marios C. Kyriacou; et al. Agronomy 2021. doi:10.3390/agronomy11061040

Other claims from this paper (8)

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Salicylic acid priming resulted in a smaller decrease in lettuce chlorophyll content under cadmium stress than in controls.

Taxon: LETTUCELactuca sativat0
Treatment: Seed priming using salicylic acide1
Outcome: chlorophyll contente0
Direction: smaller decreasee0
Comparator: the controle0

Verbatim

e0
“Alleviation of Cd stress was evident through chlorophyll content as well, where smaller decrease in primed plants was recorded comparing to the control.”
✓ located verbatim in the source · abstract, characters 800–952

e1
“Seed priming using salicylic acid”
✓ located verbatim in the source · abstract, characters 534–567

t0
“LETTUCE”
✓ located verbatim in the source · title, characters 41–48

Title

EFFECT OF SALICYLIC ACID SEED PRIMING ON LETTUCE RESISTANCE TO HIGH LEVELS OF CADMIUM (Lactuca sativa L.)

Melisa Šabanović; Adisa Parić; Mirela Briga; et al. Genetics & Applications 2018. doi:10.31383/ga.vol2iss2pp67-72

Other claims from this paper (7)

Intervention effect Cadmium reduced lettuce germination rate in control plants.
Intervention effect Cadmium reduced lettuce fresh and dry weight in control plants.
Intervention effect Cadmium reduced lettuce water and chlorophyll content in control plants.
Intervention effect Salicylic acid seed priming increased lettuce resistance to cadmium toxicity.
Intervention effect Under 5 mM Cd, salicylic acid priming increased lettuce germination rate.
Intervention effect Under 5 mM Cd, salicylic acid priming increased lettuce fresh mass and water content.
Recommendation The authors suggest salicylic acid as a priming agent to alleviate cadmium toxicity in lettuce.

Associationobservedoriginal resultnegativenot significant (as stated)measured

Claim · model-written summary

Lettuce total dry mass tended to decrease with less blue light, but treatment differences were not significant.

Taxon: lettuceLactuca sativae0
Treatment: decreasing BFe0
Outcome: TDMe0
Direction: decreasee0

Verbatim

e0
“TDM tended to decrease with decreasing BF for lettuce, treatment differences were not significant”
✓ located verbatim in the source · abstract, characters 1043–1140

Title

Performance of Three Species of Salad-type Plants Grown under Narrow-spectrum Light-emitting Diodes (LEDs) in a Controlled Environment

G.D. Goins; N.C. Yorio; H.R. Kagie; et al. HortScience 1998. doi:10.21273/hortsci.33.3.488c

Other claims from this paper (8)

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Doses below 0.25 were associated with a 21.3% decrease in the reported response.

Taxon: LettuceLactuca sativat0
Treatment: Doses lower than 0.25e0
Direction: decreasede0
Value: 21.3%e0

Not reportedComparatorOutcome

Verbatim

e0
“Doses lower than 0.25 decreased by 21.3%”
✓ located verbatim in the source · abstract, characters 1069–1109

t0
“Lettuce”
✓ located verbatim in the source · title, characters 61–68

Title

Extracellular Fragmented Self-DNA Displays Biostimulation of Lettuce in Soilless Culture

Tatiana P. L. Cunha-Chiamolera; Miguel Urrestarazu; Ireri A. Carbajal-Valenzuela; et al. Horticulturae 2024. doi:10.3390/horticulturae10090964

Other claims from this paper (10)

Association Fertigation uptake and growth were significantly correlated in lettuce.
Association Water uptake and growth had the highest reported correlation, R2 = 0.96.
Association Uptake and production parameters had quadratic relationships with applied self-eDNA dose.
Intervention effect Mean drainage EC did not differ significantly between treatments.
Intervention effect Mean drainage pH did not differ significantly between treatments.
Intervention effect Water, nitrate and potassium uptake were highest at 0.25 and 2.5 mg self-eDNA.
Intervention effect Lettuce growth was highest at 0.25 and 2.5 mg self-eDNA.
Intervention effect Doses above 2.5 were associated with a 16.4% decrease in the reported response.
Observation The authors found self-eDNA beneficial as a biostimulant and potentially cost-effective.
Observation Self-eDNA potentially had an appropriate cost–benefit ratio.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Doses above 2.5 were associated with a 16.4% decrease in the reported response.

Taxon: LettuceLactuca sativat0
Treatment: doses higher than 2.5e0
Direction: decreasede0
Value: 16.4%e0

Not reportedComparatorOutcome

Verbatim

e0
“doses higher than 2.5 decreased by 16.4%”
✓ located verbatim in the source · abstract, characters 1117–1157

t0
“Lettuce”
✓ located verbatim in the source · title, characters 61–68

Title

Extracellular Fragmented Self-DNA Displays Biostimulation of Lettuce in Soilless Culture

Tatiana P. L. Cunha-Chiamolera; Miguel Urrestarazu; Ireri A. Carbajal-Valenzuela; et al. Horticulturae 2024. doi:10.3390/horticulturae10090964

Other claims from this paper (10)

Association Fertigation uptake and growth were significantly correlated in lettuce.
Association Water uptake and growth had the highest reported correlation, R2 = 0.96.
Association Uptake and production parameters had quadratic relationships with applied self-eDNA dose.
Intervention effect Mean drainage EC did not differ significantly between treatments.
Intervention effect Mean drainage pH did not differ significantly between treatments.
Intervention effect Water, nitrate and potassium uptake were highest at 0.25 and 2.5 mg self-eDNA.
Intervention effect Lettuce growth was highest at 0.25 and 2.5 mg self-eDNA.
Intervention effect Doses below 0.25 were associated with a 21.3% decrease in the reported response.
Observation The authors found self-eDNA beneficial as a biostimulant and potentially cost-effective.
Observation Self-eDNA potentially had an appropriate cost–benefit ratio.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

At 35°C, lettuce enzymatic activity showed decrease.

Taxon: LettuceLactuca sativat0
Treatment: High temperature (35°C)e0
Outcome: enzymatic activitye0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“High temperature (35°C) caused a rapid decrease in the enzymatic activity, but no decrease in the level of enzyme protein.”
✓ located verbatim in the source · abstract, characters 360–482

t0
“Synthesis de novo of Glutamine Synthetase in the Embryonic Axis, Closely Related to the Germination of Lettuce Seeds”
✓ located verbatim in the source · title, characters 0–116

Title

Synthesis de novo of Glutamine Synthetase in the Embryonic Axis, Closely Related to the Germination of Lettuce Seeds

Atsushi Sakamoto; Go Takeba 3; Kunisuke Tanaka Plant and Cell Physiology 1990. doi:10.1093/oxfordjournals.pcp.a077962

Other claims from this paper (5)

Intervention effect Red light increased lettuce glutamine synthetase protein in the embryonic axis.
Intervention effect gibberellin increased lettuce glutamine synthetase protein in the embryonic axis.
Intervention effect Cycloheximide suppressed lettuce enzyme protein increases.
Intervention effect At 35°C, lettuce level of enzyme protein showed no decrease.
Intervention effect Red light increased lettuce seed translatable mRNA for GS.

“decrease in A”

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