Search claims · PlantClaims

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

UV-B did not significantly decrease lettuce shoot fresh or dry weight.

Taxon: lettuceLactuca sativae0
Organ / stage: shootse0
Treatment: UV-B exposuree0
Outcome: fresh/dry weight of the lettuce shootse0
Direction: did not significantly decreasee0

Not reportedComparator

Verbatim

e0
“UV-B exposure did not significantly decrease the fresh/dry weight of the lettuce shoots”
✓ located verbatim in the source · abstract, characters 413–500

Title

Effects of Ultraviolet-B Radiation on the Regulation of Ascorbic Acid Accumulation and Metabolism in Lettuce

Shujuan Liu; Lei Yu; Lipan Liu; et al. Horticulturae 2023. doi:10.3390/horticulturae9020200

Other claims from this paper (9)

Intervention effect Photosynthetic gas exchange measures fell during the first four irradiation days and recovered at day seven.
Intervention effect UV-B increased lettuce AsA, GSH and H2O2 levels significantly.
Association H2O2 level correlated positively with AsA and GSH levels.
Intervention effect UV-B upregulated expression of most genes encoding AsA recycling enzymes.
Intervention effect UV-B downregulated associated AsA recycling enzyme activities.
Mechanism The authors propose that elevated AsA contributes to the AsA–GSH cycle and downregulates AO activity and expression.
Observation UV-B irradiation affected metabolite levels more than treatment time.
Mechanism The authors suggest feedback between AsA recycling enzyme expression and activity regulates AsA homeostasis.
Recommendation The authors recommend short-term UV-B supplementation to enhance lettuce AsA content.

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 resultpositivemeasured

Claim · model-written summary

Mycorrhizal infection alleviated zinc inhibition of lettuce root and shoot dry weight.

Taxon: lettuceLactuca sativat0
Treatment: infected by Ame0
Outcome: dry weight of roots and shootse0
Direction: decreasee0
Comparator: non-Am plantse0

Verbatim

e0
“The introduction of Zn caused a decrease in the inhibiting effect of zinc on dry weight of roots and shoots of lettuce plant infected by Am in contrary with non-Am plants”
✓ located verbatim in the source · abstract, characters 286–456

t0
“Lettuce Plants”
✓ located verbatim in the source · title, characters 68–82

Title

Influence of Arbuscular Mycorrhizal Fungus (Glomus etunicatum) with Lettuce Plants under Zinc Toxicity in Nutrient Solution

Shadi Farshian; Jalil Khara; Parviz Malekzadeh Pakistan Journal of Biological Sciences 2007. doi:10.3923/pjbs.2007.2363.2367

Other claims from this paper (3)

Intervention effect Chlorophyll and total sugar content decreased in both mycorrhizal and nonmycorrhizal lettuce.
Intervention effect Total protein content increased in mycorrhizal lettuce.
Intervention effect Total protein content decreased in nonmycorrhizal lettuce.

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.

“dry weight decrease”

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