Search claims · PlantClaims

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Salt stress caused a larger decrease in many lettuce metabolites, especially arginine.

Taxon: LettuceLactuca sativat0
Treatment: salt stresse0
Outcome: many metabolites, especially the amino acid argininee0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“salt stress caused a larger decrease in many metabolites, especially the amino acid arginine”
✓ located verbatim in the source · abstract, characters 1150–1242

t0
“Lettuce”
✓ located verbatim in the source · title, characters 59–66

Title

Preharvest Abiotic Stress Affects the Nutritional Value of Lettuce

Sanja Ćavar Zeljković; Nikola Štefelová; Karel Hron; et al. Agronomy 2023. doi:10.3390/agronomy13020398

Other claims from this paper (5)

Intervention effect Drought caused the largest relative increase in lettuce phenolic compounds and some amino acids.
Intervention effect Drought caused the largest relative decrease in lettuce vitamin C and fatty acids.
Intervention effect Salt stress slightly increased lettuce fatty acids and vitamin E.
Observation Prazan and Altenbursky had the least chemical composition changes under drought.
Observation Altenbursky had the least variability among varieties under salt stress.

Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

Foliar peptide fertilizers caused no fresh shoot yield change or a slight decrease with Zn-peptide.

Taxon: lettuceLactuca sativat0
Treatment: Zn-peptide treatmente0
Outcome: fresh shoot yielde0
Direction: slight decreasee0

Not reportedComparator

Verbatim

t0
“lettuce”
✓ located verbatim in the source · title, characters 121–128

e0
“foliar treatments with peptides-based fertilizers induced no fresh shoot yield variations or a slight decrease in the case of Zn-peptide treatment”
✓ located verbatim in the source · abstract, characters 428–574

Title

Foliarly applied biochelates as an eco-friendly strategy for biofortification with iron and zinc of hydroponically grown lettuce

Iqra Bashir; Marzia Leporino; José Carlos Laban Lliuya; et al. Scientia Horticulturae 2026. doi:10.1016/j.scienta.2026.114965

Other claims from this paper (15)

Intervention effect Fe-peptide increased lettuce leaf iron concentration by up to 690% versus control.
Intervention effect Zn-peptide increased lettuce leaf zinc concentration by 222% versus control.
Observation Fertilizers induced cultivar-specific changes in primary and secondary metabolism.
Intervention effect Aquino shoot fresh weight and root fresh and dry weight increased, especially with peptide and Zn-peptide.
Observation Aquino leaf total amino acids, vitamin C, and soluble carbohydrates increased.
Observation Barlack had a stronger antioxidant response, DPPH activity, and higher leaf flavonoids and anthocyanins.
Intervention effect Peptide fertilizers reduced soluble carbohydrates and total anthocyanins in both cultivars.
Intervention effect Peptide fertilizers reduced vitamin C in Aquino leaves.
Intervention effect Peptide fertilizers reduced amino acids in Barlack leaves.
Intervention effect Peptide treatment increased amino acids in Aquino leaves.
Intervention effect Zinc peptide reduced Barlack shoot dry biomass.
Intervention effect Zinc peptide reduced Barlack leaf total phenol and antioxidant activity.
Intervention effect Zn-peptide and peptide treatments reduced leaf phosphorus in both cultivars.
Intervention effect Zn-peptide and peptide treatments increased leaf boron concentration in both cultivars.
Recommendation The authors support cultivar-specific peptide biochelates for targeted lettuce biofortification.

Observationobservedoriginal resultmeasured

Claim · model-written summary

PAL activity tended to decrease in GSB after harvest and processing.

Taxon: lettuceLactuca sativat0
Material: GSBe0
Outcome: in GSB it showed a tendency to decrease in the first few hours from harvest and processinge0
Direction: decreasee0

Verbatim

e0
“in GSB it showed a tendency to decrease in the first few hours from harvest and processing”
✓ located verbatim in the source · abstract, characters 1135–1225

t0
“Lettuce”
✓ located verbatim in the source · title, characters 68–75

Title

Biochemical Study of Leaf Browning in Minimally Processed Leaves of Lettuce (Lactuca sativa L. Var. Acephala)

E. Degl'Innocenti; L. Guidi; A. Pardossi; et al. Journal of Agricultural and Food Chemistry 2005. doi:10.1021/jf050927o

Other claims from this paper (9)

Observation The two lettuce cultivars differed biochemically.
Observation Total ascorbic acid increased in RSB.
Observation DHA concentration increased in RSB.
Observation Total ascorbic acid diminished in GSB.
Observation ASA was undetectable in GSB after 72 hours.
Observation Antioxidant capacity decreased significantly in RSB during storage.
Observation Antioxidant capacity increased strongly in GSB during storage.
Observation PAL activity increased soon after processing, peaked by 3 hours, then declined to a stable level in RSB.
Observation POD activity for chlorogenic acid increased significantly during storage only in GSB.

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

In Multigreen 3, preharvest N application above 60 mg L-1 was associated with a decrease in b* value.

Taxon: lettuceLactuca sativat0
Material: Multigreen 3e3
Treatment: N application higher than 60 mg L−1e3
Outcome: b* valuee3
Direction: decreasee3

Verbatim

t0
“hydroponically grown lettuce varieties”
✓ located verbatim in the source · title, characters 25–63

e3
“While in Multigreen 3 and N application higher than 60 mg L−1 influenced the decrease in b* value”
✓ located verbatim in the source · abstract, characters 1196–1293

Title

Postharvest responses of hydroponically grown lettuce varieties to nitrogen application rate

Bevly M. Mampholo; Martin Maboko; Puffy Soundy; et al. Journal of Integrative Agriculture 2019. doi:10.1016/s2095-3119(19)62664-x

Other claims from this paper (11)

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Cadmium application did not significantly decrease lettuce crop yield.

Taxon: lettuceLactuca sativae1
Treatment: 20 kg Cd ha(-1) applicatione0
Outcome: crop yielde0
Direction: did not result in a significant decreasee0

Not reportedComparator

Verbatim

e0
“20 kg Cd ha(-1) application did not result in a significant decrease in crop yield”
✓ located verbatim in the source · abstract, characters 429–511

e1
“lettuce plant and soil”
✓ located verbatim in the source · abstract, characters 248–270

Title

EFFECTS OF IRON APPLICATION AGAINST CADMIUM TOXICITY ON GROWTH AND ANTI-OXIDATIVE ENZYME ACTIVITY IN LETTUCE

Boysan Canal, Sibel; Bozkurt, Mehmet Ali Van Yüzüncü Yıl University Academic Data Management System 2017

Other claims from this paper (12)

Intervention effect Cadmium toxicity significantly increased lettuce APX activity.
Intervention effect Cadmium toxicity significantly increased lettuce SOD activity.
Intervention effect Iron application substantially decreased lettuce SOD activity.
Intervention effect Sewage sludge application substantially decreased lettuce SOD activity.
Intervention effect Cadmium application significantly increased soil DTPA-Cd.
Intervention effect Cadmium application significantly increased plant DTPA-Cd.
Intervention effect Applying 50 kg Fe ha(-1) to cadmium-contaminated soil decreased soil DTPA-Cd.
Intervention effect Sewage sludge reduced soil cadmium concentration compared with cadmium application alone.
Intervention effect Sewage sludge reduced plant cadmium concentration compared with cadmium application alone.
Recommendation The authors conclude that iron can alleviate cadmium toxicity.
Mechanism The authors conclude that urban sewage sludge did not cause severe toxicity because its heavy-metal content was low.
Mechanism The authors conclude that sewage sludge can inhibit cadmium intake because of its organic matter content.

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.

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)

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.

“decrease in A”

Claim types

Direction of the findings

Over time

Claim type

Research area

Polarity

Statistics