Search claims · PlantClaims

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Together, Pythium tracheiphilum and Meloidogyne hapla produced a marked additive decrease in lettuce growth.

Taxon: lettuceLactuca sativae0
Treatment: P. tracheiphilum and M. hapla were added to the soil simultaneouslye0
Interactor: P. tracheiphilumPythium tracheiphilume0pathogen
Second interactor: M. haplaMeloidogyne haplae0pathogen
Outcome: lettuce growthe0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“A marked additive decrease in lettuce growth was observed when P. tracheiphilum and M. hapla were added to the soil simultaneously.”
✓ located verbatim in the source · abstract, characters 164–295

Title

Interactions between Pythium tracheiphilum, Meloidogyne hapla and Pratylenchus penetrans on lettuce

J.A. Gracia; R.D. Reeleder; G. Bélair Phytoprotection 2005. doi:10.7202/706010ar

Other claims from this paper (6)

Intervention effect Pythium tracheiphilum reduced lettuce growth.
Intervention effect Meloidogyne hapla reduced lettuce growth.
Intervention effect Pratylenchus penetrans reduced lettuce growth.
Association Pratylenchus penetrans and Pythium tracheiphilum had additive effects at low fungal populations.
Association Their interaction appeared negative at high fungal populations.
Intervention effect The fungus reduced root populations of both nematode species.

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.

Associationobservedoriginal resultmeasured

Claim · model-written summary

The decrease in To correlated with reduced hemicellulose per unit wall length.

Taxon: lettuceLactuca sativat0
Compound: hemicellulosee0
Outcome: decrease in Toe0
Direction: decreasee0

Verbatim

e0
“A good correlation existed between the decrease in To and the decrease in hemicellulose content per unit lengdi of the cell wall.”
✓ located verbatim in the source · abstract, characters 834–963

t0
“lettuce”
✓ located verbatim in the source · title, characters 14–21

Title

Regulation of lettuce hypocotyl elongation by gibberellic acid. Correlation between cell elongation, stress-relaxation properties of the cell wall and wall polysaccharide content

Hideto Kawamura; Seiichiro Kamisaka; Yoshio Masuda Plant and Cell Physiology 1976. doi:10.1093/oxfordjournals.pcp.a075262

Other claims from this paper (10)

Intervention effect Coumarin inhibited gibberellic-acid-induced lettuce hypocotyl elongation.
Intervention effect Dichlobenil inhibited gibberellic-acid-induced lettuce hypocotyl elongation.
Intervention effect Gibberellic acid reduced minimum relaxation time and relaxation rate.
Intervention effect Gibberellic acid increased maximum relaxation time.
Intervention effect Coumarin nullified gibberellic-acid effects on To, Tm and b.
Intervention effect Dichlobenil nullified gibberellic-acid effects on To, Tm and b.
Intervention effect Gibberellic acid increased pectic, hemicellulosic and cellulosic content per hypocotyl.
Intervention effect Gibberellic acid decreased pectic, hemicellulosic and cellulosic content per unit hypocotyl length.
Association Increased Tm correlated with reduced cellulose content per unit wall length.
Association Reduced b correlated with reduced cellulose and hemicellulose per unit length.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Zn II produced a decrease in chlorophyll b of −32.92% relative to control plants.

Taxon: lettuceLactuca sativae2
Treatment: Zn IIe0
Outcome: chlorophyll be0
Direction: decreasee3
Value: −32.92%e0
Comparator: control plantse1

Verbatim

e0
“Zn II (−32.92%) for chlorophyll b”
✓ located verbatim in the source · abstract, characters 1033–1066

e1
“compared to the control plants”
✓ located verbatim in the source · abstract, characters 825–855

e2
“lettuce (Lactuca sativa L.)”
✓ located verbatim in the source · abstract, characters 423–450

e3
“The biggest decrease was recorded for plants grown in soil treated with”
✓ located verbatim in the source · abstract, characters 927–998

Title

A Multi-Method Approach for Impact Assessment of Some Heavy Metals on Lactuca sativa L.

Maria-Loredana Soran; Aura Nicoleta Sîrb; Ildiko Lung; et al. Molecules 2023. doi:10.3390/molecules28020759

Other claims from this paper (10)

Association Metal type and concentration determined the variation in biochemical traits relative to controls.
Intervention effect Ni I produced a decrease in chlorophyll a of −42.38% relative to control plants.
Intervention effect Ni I produced a decrease in carotenoids of −40.46% relative to control plants.
Intervention effect Pb I produced a decrease in polyphenols of −40.95% relative to control plants.
Intervention effect Cu III produced a decrease in DPPH of −29.42% relative to control plants.
Intervention effect Mn I produced a increase in chlorophyll a of 88.24% relative to control plants.
Intervention effect Mn I produced a increase in chlorophyll b of 65.56% relative to control plants.
Intervention effect Pb I produced a increase in carotenoids of 116.03% relative to control plants.
Intervention effect Ni III produced a increase in polyphenols of 1351.23% relative to control plants.
Intervention effect Ni III produced a increase in DPPH of 1149.35% relative to control plants.

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.

Mechanismauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The decrease in ATP accumulation is attributed to a loss in the ability to synthesize ATP during incubation.

Taxon: lettuceLactuca sativae1
Outcome: decreasee7
Qualifier: loss in the ability to synthesize ATP during the incubation timee7

Verbatim

e1
“An ATP-synthesizing system in lettuce (Lactuca sativa L.) seed powder is demonstrated”
✓ located verbatim in the source · abstract, characters 9–94

e7
“This decrease is shown to be a result of: (a) loss in the ability to synthesize ATP during the incubation time”
✓ located verbatim in the source · abstract, characters 443–553

Title

AMP AND PHOSPHOENOLPYRUVATE-DEPENDENT ATP SYNTHESIS IN LETTUCE SEEDS

M. Perl Israel journal of botany. Basic and applied plant sciences 2013. doi:10.1080/0021213x.1980.10676897

Other claims from this paper (10)

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)

Mechanismauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

Stomatal closure is associated with a decrease in lettuce net photosynthesis, transpiration and intercellular CO2 concentration.

Taxon: lettuceLactuca sativae2
Outcome: rate of net photosynthesis, transpiration, and intercellular CO2 concentratione5
Direction: decreasee5
Qualifier: Stomatal closuree5

Verbatim

e2
“as they pertain to lettuce growth”
✓ located verbatim in the source · abstract, characters 997–1030

e5
“Stomatal closure has been found to cause a decrease in the rate of net photosynthesis, transpiration, and intercellular CO2 concentration”
✓ located verbatim in the source · abstract, characters 1565–1702

Title

The Mechanisms of Different Light Supply Patterns in the Nutrient Uptake and Chlorophyll Fluorescence of Hydroponic Lettuce

Yanwei Liu; Ni Cao; Xiaolan Shi; et al. Agronomy 2023. doi:10.3390/agronomy13071910

Other claims from this paper (14)

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.

Associationobservedoriginal resultmeasured

Claim · model-written summary

The period of maximum biomass increase corresponded to a maximum decrease in NO 3 in lettuce plants.

Taxon: lettuceLactuca sativat0
Organ / stage: period of the maximum increase in biomasse7
Outcome: NO 3 in plantse7
Direction: maximum decreasee7

Verbatim

t0
“nitrate accumulation and yield of lettuce varieties”
✓ located verbatim in the source · title, characters 32–83

e7
“The period of the maximum increase in biomass also corresponded to the maximum decrease in NO 3 in plants”
✓ located verbatim in the source · abstract, characters 1651–1756

Title

Influence of nitrogen stress on nitrate accumulation and yield of lettuce varieties

E. N. Volkova VEGETABLE CROPS OF RUSSIA 2023. doi:10.18619/2072-9146-2023-1-44-49

Other claims from this paper (12)

“decrease in A”

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