Search claims · PlantClaims

Associationobservedoriginal resultnegativesignificant (as stated)simulated

Claim · model-written summary

Excessively steep leaves significantly decreased photosynthesis at higher solar inclination angles.

Taxon: riceOryza sativae1
Organ / stage: leavese0
Outcome: photosynthesise0
Direction: decreasee0
Qualifier: at higher solar inclination anglee0

Verbatim

e0
“plant types with excessively steep leaves could lead a significant decrease of photosynthesis at higher solar inclination angle”
✓ located verbatim in the source · abstract, characters 499–626

e1
“of rice using 3-D models”
✓ located verbatim in the source · abstract, characters 242–266

Title

Assessment of the Effects of Leaf Angle Combinations on Potential Photosynthesis Capacity of Rice with 3-D Models Using High Performance Computing

Bangyou Zheng; Yuntao Ma; Baoguo Li; et al. 2009 Third International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications 2009. doi:10.1109/pma.2009.46

Other claims from this paper (2)

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

At heading and milking, net photosynthesis and conductance fell significantly.

Taxon: riceOryza sativat0
Organ / stage: heading and milking stagese0
Treatment: high temperaturee1
Outcome: Pn and Gse0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“At heading and milking stages,the Pn and Gs had a significant decrease”
✓ located verbatim in the source · abstract, characters 1547–1617

t0
“rice”
✓ located verbatim in the source · title, characters 110–114

e1
“High temperature stress”
✓ located verbatim in the source · abstract, characters 1858–1881

Title

Effects of high temperature stress on the flag leaf photosynthesis and chlorophyll fluorescence parameters of rice

Fei Hu Shengtaixue zazhi 2012

Other claims from this paper (14)

Intervention effect Heat effects on rice flag leaf physiology grew with temperature.
Intervention effect High temperature decreased chlorophyll content, photosynthetic rate, and stomatal conductance.
Intervention effect High temperature decreased PSII efficiency, actual quantum yield, and electron transport rate.
Intervention effect High temperature decreased photochemical quenching and photochemical reaction.
Intervention effect High temperature increased intercellular CO2 and initial fluorescence.
Intervention effect High temperature increased non-photochemical quenching and other heat dissipation.
Intervention effect Most photosynthetic and fluorescence measures changed significantly above 35 ℃.
Intervention effect Photosynthetic and fluorescence measures decreased greatly above 38 ℃.
Intervention effect At heading and milking, intercellular CO2 rose significantly.
Intervention effect SPAD decreased significantly at wax and full maturity.
Observation Fv/Fm and Fo decrements were greater at heading and milking than later stages.
Observation Heat had greater effects on Pn than on SPAD.
Mechanism Authors attribute Pn decreases at heading and milking mainly to stomatal factors.
Mechanism Authors attribute Pn decreases at later maturity mainly to non-stomatal factors.

Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Photosynthesis increased significantly as irrigation maximum rose, then declined beyond a threshold.

Taxon: tomatoSolanum lycopersicumt0
Treatment: irrigation maximume0
Outcome: photosynthesise0
Direction: ascende0
Qualifier: began to decrease when the irrigation maximum reached a certain amounte0

Verbatim

e0
“A significant ascend trend of photosynthesis occurred with the increase of irrigation maximum, and it began to decrease when the irrigation maximum reached a certain amount”
✓ located verbatim in the source · abstract, characters 2453–2625

t0
“tomato”
✓ located verbatim in the source · title, characters 40–46

Title

Effects of water-fertilizer coupling on tomato photosynthesis, yield and water use efficiency

F Universit Nongye gongcheng xuebao 2014

Other claims from this paper (18)

Method / resource The photosynthesis model had a determination coefficient of 0.93.
Method / resource The yield model had a determination coefficient of 0.95.
Association Water influenced tomato photosynthesis more than fertilizer did.
Association Fertilizer influenced tomato yield more than water did.
Association Water–fertilizer coupling was positively related to tomato yield.
Association Tomato yield increased as water and fertilizer rose within a range, then declined beyond it.
Mechanism Water and fertilizer effects on yield and water use efficiency were attributed to photosynthesis.
Association Yield was not linearly correlated with photosynthesis.
Observation Medium water with high fertilizer favored photosynthesis.
Intervention effect Medium water with high fertilizer yielded less fruit than medium water with medium fertilizer.
Recommendation The authors found optimized irrigation and fertilizer proportions favorable for tomato yield and WUE.
Recommendation The recommended irrigation maximum was 80%-82% of field capacity above a 50% lower limit.
Recommendation The recommended nitrogen rate was 313.75-439.75 kg/hm2.
Recommendation The recommended phosphorus rate was 156.55-219.19 kg/hm2.
Recommendation The recommended potassium rate was 313.75-439.75 kg/hm2.
Observation The best combination yielded 124 t/hm2.
Observation The best combination attained water use efficiency of 43.2 kg/m3 water.
Method / resource A verification test at South Horticultural Field gave a similar result.

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Water deficit significantly increased the decrease in low-light fleck photosynthesis relative to continuous low light.

Taxon: riceOryza sativae2
Treatment: Water deficite1
Outcome: photosynthetic rate in the low-light period under flecked irradiance (Amin-fleck)e0
Direction: greater decreasee0
Comparator: continuously low-light period (Ainitial)e0

Verbatim

e0
“significantly led to a greater decrease in photosynthetic rate in the low-light period under flecked irradiance (Amin-fleck) relative to photosynthetic rate in the same light intensity of continuously low-light period (Ainitial)”
✓ located verbatim in the source · abstract, characters 1358–1586

e1
“Water deficit had no significant effect”
✓ located verbatim in the source · abstract, characters 1183–1222

e2
“Two rice cultivars”
✓ located verbatim in the source · abstract, characters 412–430

Title

The inhibition of photosynthesis under water deficit conditions is more severe in flecked than uniform irradiance in rice (Oryza sativa) plants

Jiali Sun; Qiangqiang Zhang; Muhammad Adnan Tabassum; et al. Functional Plant Biology 2017. doi:10.1071/fp16383

Other claims from this paper (8)

Observation Steady-state photosynthesis inhibition was more severe in Champa than YLY6.
Intervention effect Vcmax decreased under 20% PEG in Champa.
Intervention effect Jmax decreased under 20% PEG in Champa.
Intervention effect YLY6 showed less or no effect on Vcmax and Jmax under PEG.
Association Induction states of leaf photosynthetic rate and stomatal conductance were highly correlated.
Intervention effect Water deficit significantly decreased induction states in both cultivars.
Intervention effect Water deficit did not significantly affect time to reach 50% of maximum photosynthetic rate.
Mechanism The lower induction state and greater low-light decrease were interpreted to reduce integrated CO2 fixation more under flecked than uniform irradiance.

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

In 2009 herbicide vineyards, leaf net photosynthesis significantly decreased against artificial weeding.

Taxon: grapee0
Treatment: herbicide was applied in 2009e0
Outcome: net photosynthesis ratee0
Direction: decreasee0
Comparator: artificial weedinge0

Verbatim

e0
“In the vineyards T1 and T2 where herbicide was applied in 2009, the net photosynthesis rate (Pa) of grape leaves had a significant decrease, as compared with that in vineyard CK where artificial weeding was implemented”
✓ located verbatim in the source · abstract, characters 234–452

Title

[Effects of herbicide on grape leaf photosynthesis and nutrient storage].

Wei Tan; Hui Wang; Heng Zhai PubMed 2011

Other claims from this paper (17)

Observation Fourth-node leaves in T1 had a 40.5% photosynthesis decrement.
Observation Sixth-node leaves in T2 had a 32.1% photosynthesis decrement.
Observation Herbicide had slight effects on leaf stomatal conductance.
Intervention effect Continued herbicide in T1 in 2010 kept photosynthesis significantly below CK.
Intervention effect With artificial weeding in 2010, T2 top and middle leaf Pn and Gs slightly exceeded T1.
Observation T2 photosynthesis remained below CK.
Intervention effect Herbicide lowered maximum PS II photochemical efficiency and performance index.
Intervention effect Herbicide raised J- and K-step variable fluorescence.
Intervention effect Herbicide reduced middle-node pigment content with dose.
Intervention effect Herbicide significantly increased catalase and peroxidase activities.
Intervention effect Herbicide increased middle-node SOD activity.
Intervention effect Herbicide decreased SOD activity in top and bottom leaves.
Intervention effect Herbicide increased APX activity in middle and bottom leaves.
Intervention effect Herbicide decreased APX activity in top leaves.
Intervention effect Herbicide aggravated leaf lipid peroxidation.
Intervention effect Herbicide reduced soluble sugar, starch and free amino acid storage in branches.
Intervention effect Herbicide reduced soluble protein storage in branches.

Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Tissue osmotic potential decrease correlated significantly with Na+ content.

Taxon: cottonGossypium hirsutumt0
Compound: Na+e0
Outcome: tissue osmotic potentiale0

Not reportedDirection

Verbatim

e0
“the decrease in tissue osmotic potential significantly correlated with the Na+ content”
✓ located verbatim in the source · abstract, characters 1260–1346

t0
“[Changes in the growth and photosynthesis of cotton seedlings under progressive drought after saltwater irrigation].”
✓ located verbatim in the source · title, characters 0–116

Title

[Changes in the growth and photosynthesis of cotton seedlings under progressive drought after saltwater irrigation].

Shu-jie Ma; Xin-fu Bai; Lin Qi; et al. PubMed 2014

Other claims from this paper (8)

Intervention effect Drought significantly inhibited seedling growth.
Intervention effect Drought lowered net photosynthetic rate.
Intervention effect Saltwater irrigated drought stressed cotton had higher height and biomass than water irrigated cotton.
Intervention effect Saltwater irrigated drought stressed cotton had higher photosynthesis and Fv/Fm than water irrigated cotton.
Intervention effect Saltwater irrigation increased soil and leaf relative water content and cell turgor under drought.
Intervention effect Saltwater irrigation increased plant Na+ concentration under drought.
Intervention effect Saltwater irrigation lowered plant water potential and tissue osmotic potential.
Recommendation Authors suggested some soil NaCl could alleviate drought damage to cotton.

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Stem inoculation significantly reduced photosynthesis in week one.

Taxon: Austrocedrus chilensisAustrocedrus chilensist0
Treatment: stem‐inoculatede0
Interactor: Phytophthora austrocedraet0pathogen
Outcome: photosynthesis (A)e0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“stem‐inoculated saplings showed a significant decrease in photosynthesis (A) without alteration of stomatal conductance ( g s ) or stem‐specific hydraulic conductivity (Ks)”
✓ located verbatim in the source · abstract, characters 161–333

t0
“Austrocedrus chilensis by the pathogen Phytophthora austrocedrae”
✓ located verbatim in the source · title, characters 42–106

Title

Alteration of physiological parameters of Austrocedrus chilensis by the pathogen Phytophthora austrocedrae

M. L. Vélez; P. V. Silva; O. A. Troncoso; et al. Plant Pathology 2012. doi:10.1111/j.1365-3059.2011.02585.x

Other claims from this paper (14)

Intervention effect Stomatal conductance and hydraulic conductivity were unchanged in week one.
Observation Photosynthesis, stomatal conductance and hydraulic conductivity progressively declined from week two.
Observation Significant stem lesions developed from week two.
Observation Water use efficiency rose in week two.
Observation Water use efficiency declined from week three.
Observation Hyphae and resinous material occurred in tracheids and rays below lesions.
Observation Parenchyma ray cells were necrotic and tracheid tori blocked.
Observation Healthy xylem lacked resin and blockage but contained abundant ray starch.
Intervention effect Pathogen culture filtrate changed extracellular pH and conductivity.
Intervention effect Culture filtrate increased necrosis in leaf and stem tissues in vitro.
Observation In vivo inoculated leaves showed similar injury.
Intervention effect Xylem culture filtrate injection reduced photosynthesis and disturbed leaf tissue integrity.
Intervention effect Xylem culture filtrate injection did not alter conductance, water use efficiency or conductivity.
Association Photosynthetic decline correlated with tissue integrity changes.

Observationobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Net photosynthesis showed a single daily peak and decreased significantly after 8:00 am under all four treatments.

Taxon: Grape‘Red Globalt0
Outcome: net photosynthesis rate(Pn)e0
Direction: decreasee0
Qualifier: after 8:00am of all 4treatmentse0

Verbatim

e0
“diurnal variety of net photosynthesis rate(Pn)showed a one peak curve with a significant decrease after 8:00am of all 4treatments.”
✓ located verbatim in the source · abstract, characters 407–537

t0
“Grape‘Red Global”
✓ located verbatim in the source · title, characters 16–32

Title

The Reaction of Grape‘Red Global'Photosynthesis Rate on Short Term Different Level Irrigation Treatments

MA Shua Northern Horticulture 2015

Other claims from this paper (10)

Mechanism The decrease under L1 was attributed to a non-stomatal reason.
Mechanism The decreases under L2, L3 and L4 were attributed to stomatal reasons.
Intervention effect Mean Pn under L1 was 4.61CO2μmol·m-2·s-1 and lower than under the other treatments.
Observation Mean Pn under L2 was 8.20CO2μmol·m-2·s-1.
Observation Mean Pn under L3 was 7.76CO2μmol·m-2·s-1.
Observation Mean Pn under L4 was 7.60CO2μmol·m-2·s-1.
Observation Maximum Pn ranked L2 and L3 above L4 above L1.
Mechanism Lower Pnmax under L1 and L4 was attributed to lower chlorophyll content.
Association The lower Pnmax under L1 and L4 was unrelated to chlorophyll fluorescence.
Recommendation The authors recommend moderate irrigation to maintain high Pn.

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Drought significantly decreased leaf net photosynthesis and respiration rates.

Taxon: Periploca sepium BungePeriploca sepiumt0
Treatment: Drought stresse0
Outcome: net photosynthesis rate ( P n ) and respiration rate of leavese0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“Drought stress led to a significant decrease in the net photosynthesis rate ( P n ) and respiration rate of leaves”
✓ located verbatim in the source · abstract, characters 220–334

t0
“Periploca sepium Bunge”
✓ located verbatim in the source · title, characters 48–70

Title

Physiological and ecological characteristics of Periploca sepium Bunge under drought stress on shell sand in the Yellow River Delta of China

Xiao Wang; Jiang-Bao Xia; Xue-Bin Cao Scientific Reports 2020. doi:10.1038/s41598-020-66717-z

Other claims from this paper (8)

Intervention effect Drought decreased low intensity light use efficiency and light ecological amplitude.
Intervention effect Increasing drought decreased photosynthetic electron transport in leaves.
Intervention effect Increasing drought increased dissipation of light energy as heat.
Observation Photosynthesis suffered severe photoinhibition under drought.
Intervention effect Peroxidase activity increased in the drought response.
Intervention effect Drought response involved greater production of proline, soluble sugars and malondialdehyde.
Intervention effect Increasing drought decreased stem sap flow rate and cumulative sap flow.
Mechanism Authors interpret the species as having high adaptive plasticity to drought through linked physiological processes.

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Leafroll infection significantly decreased vine photosynthesis, especially with GLRaV 1+3 coinfection.

Taxon: grapevineVitist0
Treatment: GLRaV 1+3e0
Interactor: GLRaV 1+3e0pathogen
Outcome: photosynthesise0
Direction: decreasee0

Not reportedComparator

Verbatim

t0
“grapevine”
✓ located verbatim in the source · title, characters 10–19

e0
“Physiological measurement showed a significant decrease in photosynthesis, yield and sugar content, which were highly significant in the co-infected vines (GLRaV 1+3).”
✓ located verbatim in the source · abstract, characters 1848–2015

e1
“infections with different GLRaVs (GLRaV 1 & GLRaV 1+3)”
✓ located verbatim in the source · abstract, characters 1119–1173

Title

Impact of grapevine leafroll virus infections on vine physiology and the berry transcriptome

Markus Rienth; Sana Ghaffari; Jean-Sébastien Reynard ArODES (HES-SO (https://www.hes-so.ch/)) 2019

Other claims from this paper (7)

“decrease of the photosynthesis”

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