Search claims · PlantClaims

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Heat stress decreased lettuce seedling total dry weight by 33%.

Taxon: lettuceLactuca sativae0
Treatment: high-temperature stresse0
Outcome: total dry weighte0
Direction: decreasee0
Value: 33%e0

Not reportedComparator

Verbatim

e0
“high-temperature stress significantly inhibited the growth of lettuce seedlings, with a 33% decrease in total fresh weight and total dry weight”
✓ located verbatim in the source · abstract, characters 415–558

Title

Role of Spermidine in Photosynthesis and Polyamine Metabolism in Lettuce Seedlings under High-Temperature Stress

Xin He; Jinghong Hao; Shuangxi Fan; et al. Plants 2022. doi:10.3390/plants11101385

Other claims from this paper (11)

Intervention effect Heat stress decreased lettuce seedling total fresh weight by 33%.
Intervention effect Heat stress inhibited photosynthesis, more strongly under D-arginine treatment.
Intervention effect Spermidine recovery increased net photosynthetic rate, stomatal conductance and transpiration rate.
Intervention effect Spermidine recovery increased stomatal limit value and intercellular CO2 concentration.
Intervention effect Heat stress reduced Fv/Fm, qP and ETR.
Intervention effect Heat stress reduced PSII photochemical efficiency.
Intervention effect Heat stress increased NPQ.
Intervention effect Heat stress reduced light energy use, and exogenous spermidine alleviated that response.
Mechanism The authors propose increased polyamine content may stem from increased synthase and decreased oxidase activity.
Mechanism D-arginine suppressed endogenous polyamine levels and reduced lettuce heat tolerance.
Mechanism Exogenous spermidine promoted polyamine accumulation and increased lettuce photosynthetic and oxidative stress levels.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Soil with 5% RP decreased lettuce dry weight by 44% (1.7 times) compared with soil without residual compost.

Taxon: lettuceLactuca sativae0
Treatment: 5% of RPe0
Outcome: dry weight of lettucee0
Direction: decreasee0
Value: 44%e0
Comparator: the soil without residual compost additione0

Verbatim

e0
“Soil treatments with 5% of RP and RM resulted in a 1.7 and 1.2 times (44% and 22%, respectively) decrease in dry weight of lettuce, as compared to the soil without residual compost addition”
✓ located verbatim in the source · abstract, characters 626–815

Title

Residual compost from the production of Bactris gasipaes Kunth and Pleurotus ostreatus as soil conditioners for Lactuca sativa ‘Veronica’

Marcelo Barba Bellettini; Sebastião Bellettini; Francisco Menino Destéfanis Vítola; et al. Semina Ciências Agrárias 2017. doi:10.5433/1679-0359.2017v38n2p581

Other claims from this paper (9)

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Soil with 5% RM decreased lettuce dry weight by 22% (1.2 times) compared with soil without residual compost.

Taxon: lettuceLactuca sativae0
Treatment: RMe0
Outcome: dry weight of lettucee0
Direction: decreasee0
Value: 22%e0
Qualifier: 5% of RP and RMe0
Comparator: the soil without residual compost additione0

Verbatim

e0
“Soil treatments with 5% of RP and RM resulted in a 1.7 and 1.2 times (44% and 22%, respectively) decrease in dry weight of lettuce, as compared to the soil without residual compost addition”
✓ located verbatim in the source · abstract, characters 626–815

Title

Residual compost from the production of Bactris gasipaes Kunth and Pleurotus ostreatus as soil conditioners for Lactuca sativa ‘Veronica’

Marcelo Barba Bellettini; Sebastião Bellettini; Francisco Menino Destéfanis Vítola; et al. Semina Ciências Agrárias 2017. doi:10.5433/1679-0359.2017v38n2p581

Other claims from this paper (9)

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

High spent coffee ground concentrations reduced lettuce leaf dry weight.

Taxon: lettuceLactuca sativat0
Treatment: High SCG concentrationse0
Outcome: dry weight of leavese0
Direction: lowere0

Not reportedComparator

Verbatim

e0
“High SCG concentrations in the soil generated lighter colored tissues, a decrease in the green color, less root development, and lower dry weight of leaves ( P < 0.05)”
✓ located verbatim in the source · abstract, characters 523–690

t0
“lettuce”
✓ located verbatim in the source · title, characters 120–127

Title

Spent coffee grounds as an alternative fertilizer: impact on bioaccessibility of antioxidants and commercial quality of lettuce

Mariela Patrignani; Héctor Joaquín Hasperué; Ana Cervera‐Mata; et al. Journal of the Science of Food and Agriculture 2024. doi:10.1002/jsfa.13936

Other claims from this paper (8)

Intervention effect High spent coffee ground concentrations made lettuce tissues lighter and less green.
Intervention effect High spent coffee ground concentrations reduced lettuce root development.
Intervention effect Spent coffee ground levels affected antioxidant release.
Intervention effect In digested lettuce, increasing spent coffee grounds from 10 to 125 g kg −1 increased FRAP antioxidant amount from 43.88 ± 4.81 to 105.96 ± 29.09 μmol Trolox g −1 dry weight.
Intervention effect The IC RED assay found the highest antioxidant value at 150 g kg −1 spent coffee grounds.
Intervention effect Low spent coffee ground levels significantly increased antioxidant release in the fermented fraction.
Intervention effect Intermediate spent coffee ground amounts produced the highest insoluble antioxidant amount.
Recommendation The authors recommend balancing antioxidant capacity with visual quality.

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Heat stress decreased lettuce seedling total fresh weight by 33%.

Taxon: lettuceLactuca sativae0
Treatment: high-temperature stresse0
Outcome: total fresh weighte0
Direction: decreasee0
Value: 33%e0

Not reportedComparator

Verbatim

e0
“high-temperature stress significantly inhibited the growth of lettuce seedlings, with a 33% decrease in total fresh weight and total dry weight”
✓ located verbatim in the source · abstract, characters 415–558

Title

Role of Spermidine in Photosynthesis and Polyamine Metabolism in Lettuce Seedlings under High-Temperature Stress

Xin He; Jinghong Hao; Shuangxi Fan; et al. Plants 2022. doi:10.3390/plants11101385

Other claims from this paper (11)

Intervention effect Heat stress decreased lettuce seedling total dry weight by 33%.
Intervention effect Heat stress inhibited photosynthesis, more strongly under D-arginine treatment.
Intervention effect Spermidine recovery increased net photosynthetic rate, stomatal conductance and transpiration rate.
Intervention effect Spermidine recovery increased stomatal limit value and intercellular CO2 concentration.
Intervention effect Heat stress reduced Fv/Fm, qP and ETR.
Intervention effect Heat stress reduced PSII photochemical efficiency.
Intervention effect Heat stress increased NPQ.
Intervention effect Heat stress reduced light energy use, and exogenous spermidine alleviated that response.
Mechanism The authors propose increased polyamine content may stem from increased synthase and decreased oxidase activity.
Mechanism D-arginine suppressed endogenous polyamine levels and reduced lettuce heat tolerance.
Mechanism Exogenous spermidine promoted polyamine accumulation and increased lettuce photosynthetic and oxidative stress levels.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Cd at 200 mg kg-1 soil decreased lettuce root dry weight by 64%.

Taxon: lettuceLactuca sativae1
Organ / stage: rootse1
Treatment: 200 mg Cd kg-1 soil applicatione1
Outcome: dry weighte1
Direction: decreaseinferrede1
Value: 64e1

Not reportedComparator

Verbatim

e1
“Cadmium retarded plant growth as dry weight of radish roots decline by 87% and leaves by 83% following 200 mg Cd kg-1 soil application and the corresponding values for lettuce were 64 and 69% respectively”
✓ located verbatim in the source · abstract, characters 478–682

Title

Effect of soil cadmium on growth, photosynthesis and quality of Raphanus sativus and Lactuca sativa.

Navjyot Kaur; Shalini Jhanji PubMed 2016

Other claims from this paper (12)

Intervention effect Cd at 200 mg kg-1 soil reduced radish root dry weight by 87%.
Intervention effect Cd at 200 mg kg-1 soil reduced radish leaf dry weight by 83%.
Intervention effect Cd at 200 mg kg-1 soil decreased lettuce leaf dry weight by 69%.
Intervention effect Cd applications significantly reduced leaf area per plant in radish and lettuce.
Intervention effect Cd applications significantly reduced total chlorophyll, Chl a and Chl b content in radish and lettuce.
Intervention effect Cd treatments significantly increased electrolyte leakage in leaves of radish and lettuce, indicating loss of membrane integrity.
Intervention effect Cd significantly increased Cd accumulation in radish across all applications.
Intervention effect Cd significantly increased Cd accumulation in lettuce across all applications.
Observation No visual symptoms of Cd toxicity were noticed in radish and lettuce at 25 and 50 mg Cd kg-1 soil.
Observation Yield differences were observed at 25 and 50 mg Cd kg-1 soil in radish and lettuce.
Observation Visible toxicity symptoms, interveinal chlorosis of the leaf lamina followed by necrosis and leaf rolling, were evident in radish and lettuce at 100 and 200 mg Cd kg-1 soil.
Mechanism The authors attribute harm to radish and lettuce to Cd phytotoxic effects and high accumulation in edible parts.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Cd at 200 mg kg-1 soil decreased lettuce leaf dry weight by 69%.

Taxon: lettuceLactuca sativae1
Organ / stage: leavese1
Treatment: 200 mg Cd kg-1 soil applicatione1
Outcome: dry weighte1
Direction: decreaseinferrede1
Value: 69%e1

Not reportedComparator

Verbatim

e1
“Cadmium retarded plant growth as dry weight of radish roots decline by 87% and leaves by 83% following 200 mg Cd kg-1 soil application and the corresponding values for lettuce were 64 and 69% respectively”
✓ located verbatim in the source · abstract, characters 478–682

Title

Effect of soil cadmium on growth, photosynthesis and quality of Raphanus sativus and Lactuca sativa.

Navjyot Kaur; Shalini Jhanji PubMed 2016

Other claims from this paper (12)

Intervention effect Cd at 200 mg kg-1 soil reduced radish root dry weight by 87%.
Intervention effect Cd at 200 mg kg-1 soil reduced radish leaf dry weight by 83%.
Intervention effect Cd at 200 mg kg-1 soil decreased lettuce root dry weight by 64%.
Intervention effect Cd applications significantly reduced leaf area per plant in radish and lettuce.
Intervention effect Cd applications significantly reduced total chlorophyll, Chl a and Chl b content in radish and lettuce.
Intervention effect Cd treatments significantly increased electrolyte leakage in leaves of radish and lettuce, indicating loss of membrane integrity.
Intervention effect Cd significantly increased Cd accumulation in radish across all applications.
Intervention effect Cd significantly increased Cd accumulation in lettuce across all applications.
Observation No visual symptoms of Cd toxicity were noticed in radish and lettuce at 25 and 50 mg Cd kg-1 soil.
Observation Yield differences were observed at 25 and 50 mg Cd kg-1 soil in radish and lettuce.
Observation Visible toxicity symptoms, interveinal chlorosis of the leaf lamina followed by necrosis and leaf rolling, were evident in radish and lettuce at 100 and 200 mg Cd kg-1 soil.
Mechanism The authors attribute harm to radish and lettuce to Cd phytotoxic effects and high accumulation in edible parts.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Increasing inoculum above 50 J2 further reduced lettuce leaf and root lengths and fresh and dry weights, with maximum reduction at 5000 J2/kg soil.

Taxon: lettuceLactuca sativae0
Treatment: 5000 J2/Kg soile0
Outcome: leaf and root length, fresh and dry weight of leaf and roote0
Direction: further decreasee0

Not reportedComparator

Verbatim

e0
“further decrease in growth characters viz., leaf and root length, fresh and dry weight of leaf and root of lettuce, the maximum reduction being at the highest level of (5000 J2/Kg soil)”
✓ located verbatim in the source · abstract, characters 434–619

Title

Influence of Meloidogyne incognita on germination, seedling emergence and plant growth of lettuce, Lactuca sativa Linn.

Manoj Kumar; K.N. Pathak Annals of Plant Protection Sciences 2005

Other claims from this paper (6)

Intervention effect At 500 nematodes per kilogram of soil and above, lettuce germination and emergence were significantly inhibited.
Intervention effect Germination and emergence fell more in unsterilized than sterilized soil.
Intervention effect Lettuce growth parameters declined significantly from 50 J2 per kilogram of soil.
Association Root gall numbers increased with initial inoculum up to 5000 nematodes.
Observation Soil and root nematode population was highest at 5000 M. incognita.
Observation Nematode multiplication rate increased most at 50 J2 inoculum.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

One high-DLI day followed by one low-DLI day reduced final dry weight by 13% relative to the control.

Taxon: lettuceLactuca sativae0
Treatment: one day of high DLI followed by one day of low DLIe1
Outcome: final dry weighte1
Direction: reductione1
Value: 13%e1
Comparator: our controle1
Setting: walk-in grow chambere0

Verbatim

e0
“we cultivated lettuce plants ( Lactuca sativa cv. ‘Waldmand’s Dark Green’ and ‘Rouxai’) in a walk-in grow chamber”
✓ located verbatim in the source · abstract, characters 841–954

e1
“We observed a decrease in biomass accumulation, as indicated by a 13% reduction in final dry weight only for the treatment involving one day of high DLI followed by one day of low DLI, compared to our control”
✓ located verbatim in the source · abstract, characters 1727–1935

Title

Lowering the target daily light integrals following days with excessive lighting can reduce lettuce production costs

Andres M. Mayorga-Gomez; Marc W. van Iersel; Rhuanito Soranz Ferrarezi Frontiers in Plant Science 2024. doi:10.3389/fpls.2024.1467443

Other claims from this paper (2)

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Chicken manure did not sufficiently lower lettuce cadmium amounts.

Taxon: lettuceLactuca sativat0
Treatment: Adding chicken manuree1
Outcome: Cd amountse0
Direction: not found proficient to decreasee0

Not reportedComparator

Verbatim

e0
“not found proficient to decrease Cd amounts”
✓ located verbatim in the source · abstract, characters 1493–1536

e1
“Adding chicken manure”
✓ located verbatim in the source · abstract, characters 1343–1364

t0
“lettuce”
✓ located after whitespace/quote normalisation · title, characters 93–100

Title

EFFECTS OF CADMIUM AND CHICKEN MANURE ON DRY WEIGHT AND SOME HEAVY METAL AMOUNTS FOR HEALTHY LETTUCE (LACTUCA SATIVA L.) CONSUMPTION

Kunene, Sita Sanele; Çelik, HAKAN Bursa Uludag University - AVESIS 2021

Other claims from this paper (8)

Intervention effect Cadmium application increased root cadmium concentration to 68.50 mg kg(-1).
Intervention effect Cadmium application increased leaf cadmium concentration to 39.52 mg kg(-1).
Observation Cd, Pb, Cr, Zn, Fe, Mn and Cu accumulated in lettuce roots rather than leaves without chlorosis.
Intervention effect At the highest cadmium dose, leaf dry weight was lowest at 6.43 g pot(-1).
Intervention effect At the highest cadmium dose, root dry weight was lowest at 2.54 g pot(-1).
Intervention effect Chicken manure improved lettuce dry weight under cadmium.
Intervention effect Chicken manure lowered Cr, Pb and other micronutrients under cadmium.
Recommendation The authors recommend revising soil and edible plant cadmium limits.

“dry weight decrease”

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