Search claims · PlantClaims

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

IRGA did not significantly decrease net photosynthesis at the tested moisture range.

Taxon: Bazzania trilobataBazzania trilobatae2
Treatment: IRGA processe1
Outcome: net photosynthesise0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“did not cause a significant decrease in net photosynthesis within this range”
✓ located verbatim in the source · abstract, characters 1402–1478

e1
“The drying effect of the IRGA process”
✓ located verbatim in the source · abstract, characters 1099–1136

e2
“Colonies of Bazzania trilobata (L.) S. Gray”
✓ located verbatim in the source · abstract, characters 0–43

Title

Recovery ofBazzania trilobatafollowing desiccation

Mary C. Sollows; Katherine A. Frego; Christopher Norfolk The Bryologist 2001. doi:10.1639/0007-2745(2001)104[0421:robtfd]2.0.co;2

Other claims from this paper (13)

Observation Field-dried shoots remained viable and elongated during recovery, but did not attain control activity.
Observation Field-dried shoots shifted hue after recovery but did not match controls.
Observation Field-dried shoots regained positive net photosynthesis after recovery, below controls.
Observation Saturated shoots had moisture content of 1296.4% by weight.
Intervention effect IRGA caused about 40% moisture loss from initially moist shoots.
Observation Control shoot moisture declined about 40% during IRGA and then gradually in recovery.
Observation Control shoot net carbon gain declined over the study.
Intervention effect Dried shoot moisture content fell an order of magnitude across treatments.
Observation Dried shoot moisture returned near control levels after recovery.
Intervention effect Drying reduced net photosynthesis to zero.
Observation Net photosynthesis did not resume after rehydration.
Mechanism The authors suggest field drying is less severe or prolonged than laboratory drying.
Mechanism The authors suggest colony form shields inner shoots from severe exposure.

Observationobservedoriginal resultno effectmeasured

Claim · model-written summary

The decrease in photosynthesis did not have a corresponding decrease in transpiration rate.

Taxon: Sangiovese Grapevinet0
Outcome: transpiration ratee0
Direction: reductione0

Verbatim

t0
“Sangiovese Grapevine”
✓ located verbatim in the source · title, characters 92–112

e0
“A corresponding reduction in the transpiration rate was not observed”
✓ located verbatim in the source · abstract, characters 679–747

Title

Effects of Soil Management on Physiological, Vegetative and Reproductive Characteristics of Sangiovese Grapevine

Giovan Battista Mattii; Francesco Ferrini; P. Storichi Florence Research (University of Florence) 2005. doi:10.1400/14429

Other claims from this paper (10)

Intervention effect Ground cover decreased vine net photosynthesis relative to soil tilling.
Observation Tall fescue had the lowest net photosynthesis in both years.
Observation Soil tilling had the highest net photosynthesis in both years.
Mechanism The reduction in photosynthesis was interpreted as regulated by a non-stomatal mechanism.
Intervention effect Grass-covered plots reduced pruning material weight, shoot growth and leaf area per vine in both years.
Intervention effect Groundcover reduced vine yields, especially Tall fescue.
Intervention effect Groundcover lowered cluster number.
Intervention effect Groundcover lowered cluster weight.
Intervention effect All grass covers reduced time between veraison and harvest, especially fescue.
Recommendation Groundcover was proposed for dry areas to improve berry quality and harvest date.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Under saturating CO2, pod removal did not decrease photosynthesis measured by O2 evolution.

Taxon: beant0
Outcome: photosynthetic ratee0
Direction: not observede0
Qualifier: conditions of saturating CO2e0

Not reportedTreatmentComparator

Verbatim

e0
“such a decrease in the photosynthetic rate was not observed when measured with O2 evolution under conditions of saturating CO2”
✓ located verbatim in the source · abstract, characters 538–664

t0
“pod-removed bean”
✓ located verbatim in the source · title, characters 86–102

Title

Relationship between the suppression of photosynthesis and starch accumulation in the pod-removed bean

Hiromi Nakano; Shinichi Muramatsu; Amane Makino; et al. Australian Journal of Plant Physiology 2000. doi:10.1071/pp99071

Other claims from this paper (9)

Intervention effect Pod removal decreased bean gas-exchange photosynthesis, stomatal conductance and intercellular CO2 pressure.
Association The photosynthetic decrease was associated with increased starch content.
Intervention effect Pod removal did not change Rubisco and other photosynthetic component amounts.
Intervention effect Depodded plants showed reduced CO2-limited photosynthesis for a given Rubisco content.
Intervention effect Rubisco specific activity and activation state did not decrease in depodded plants.
Intervention effect Shading restored the gas-exchange photosynthetic rate in depodded plants.
Intervention effect Shading restored CO2-limited photosynthesis per Rubisco protein to the level of plants with pods.
Intervention effect Shading decreased starch accumulation.
Mechanism The authors attributed photosynthetic suppression in depodded beans to hindered CO2 diffusion from chloroplast starch accumulation.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

The decrease in photosynthesis during chilling in the light was not prominent for the initial 2 h.

Taxon: cucumberCucumis sativuse1
Treatment: chilling in the lighte0
Outcome: Decrease in photosynthesise0
Direction: not prominente0

Not reportedComparator

Verbatim

e0
“Decrease in photosynthesis was not prominent for the initial 2 h of chilling in the light or 12 h of chilling in the dark, but was manifested as an abrupt drop thereafter”
✓ located verbatim in the source · abstract, characters 546–716

e1
“using leaf discs taken from chilled cucumber ( Cucumis sativus L.) plants”
✓ located verbatim in the source · abstract, characters 187–260

Title

A comparative study on the effect of chilling treatment in the light and in the dark on subsequent photosynthesis in cucumber

Sung-Soo Jun; Jong Min Kim; Chin Bum Lee Australian Journal of Plant Physiology 2001. doi:10.1071/pp00087

Other claims from this paper (17)

Intervention effect Chilling in the light inhibited photosynthesis faster than chilling in the dark.
Intervention effect Chilling in the light for 4 h caused about 50% inhibition of O2 evolution.
Intervention effect Chilling in the light for 6 h caused about 90% inhibition of O2 evolution.
Intervention effect Chilling in the dark for 24 h caused about 50% inhibition of O2 evolution.
Intervention effect Chilling in the dark for 48 h caused about 90% inhibition of O2 evolution.
Intervention effect Light chilling caused no decline in the Fv/Fm ratio after dark adaptation.
Observation Chilling did not significantly change initial fluorescence (Fo) or Fv/Fm.
Observation Chilling produced a notable change in fluorescence quenching parameters.
Intervention effect Chloroplasts from 4-h light-chilled plants showed roughly 50% reduction in CO2 fixation.
Intervention effect Chloroplasts from 24-h dark-chilled plants showed roughly 50% reduction in CO2 fixation.
Intervention effect Reconstituted chloroplasts from light-chilled plants showed damage in thylakoids.
Intervention effect Stroma from dark-chilled plants was less functional.
Intervention effect Electron transport was hampered only in light-chilled plants, with lesions mostly in photosystem I.
Intervention effect Dark-chilled chloroplasts showed changes in metabolite distribution, more substantial than in light-chilled chloroplasts.
Mechanism The authors suggest that light chilling mainly interferes with thylakoid function.
Mechanism The authors suggest that dark chilling mainly affects stromal function.
Mechanism The authors infer that stromal enzymes were affected in dark-chilled chloroplasts.

Observationobservedoriginal resultno effectmeasured

Claim · model-written summary

Heat sensitivity in the light adapted state did not decrease.

Taxon: grapevineVitist0
Outcome: heat sensitivitye0
Direction: not decreasede0
Qualifier: light adapted statee0

Verbatim

e0
“the heat sensitivity was not decreased in light adapted state”
✓ located verbatim in the source · abstract, characters 1272–1333

t0
“grapevine leaf photosynthesis”
✓ located verbatim in the source · title, characters 20–49

Title

Heat acclimation of grapevine leaf photosynthesis: mezo- and macroclimatic aspects

Zsolt Zsófi; Gyula Váradi; Borbála Bálo; et al. Functional Plant Biology 2009. doi:10.1071/fp08200

Other claims from this paper (10)

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Heavy water did not significantly decrease the on-line carbon isotope discrimination associated with photosynthesis in Xanthium strumarium.

Taxon: Xanthium strumarium L.Xanthium strumariume1
Treatment: heavy watere1
Outcome: on-line carbon isotope discrimination (Δ13C, or Δobs)e1
Direction: not significantly decreasede1

Not reportedComparator

Verbatim

e1
“Using 12C/13C stable isotope techniques and Xanthium strumarium L. leaves, we show that the on-line carbon isotope discrimination (Δ13C, or Δobs) associated with photosynthesis is not significantly decreased by heavy water”
✓ located verbatim in the source · abstract, characters 436–658

Title

On the effect of heavy water (D2O) on carbon isotope fractionation in photosynthesis

Guillaume Tcherkez; Graham D. Farquhar Functional Plant Biology 2008. doi:10.1071/fp07282

Other claims from this paper (4)

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Cadmium content in regenerated poplar leaves did not decrease with excess iron supply.

Taxon: Populus glaucaPopulus glaucat0
Organ / stage: regenerated leavese1
Treatment: Fe-citratee7
Outcome: Cd contente1
Direction: did not decreasee1

Not reportedComparator

Verbatim

t0
“Impact of Iron Supply on the Kinetics of Recovery of Photosynthesis in Cd-stressed Poplar (Populus glauca)”
✓ located verbatim in the source · title, characters 0–106

e7
“Fe-citrate at 10 microm or 50 microm was given with or without 10 microm Cd(NO3)2 to hydroponically cultured poplars”
✓ located verbatim in the source · abstract, characters 310–426

e1
“In regenerated leaves, the iron content increased significantly, while the Cd content did not decrease”
✓ located verbatim in the source · abstract, characters 728–830

Title

Impact of Iron Supply on the Kinetics of Recovery of Photosynthesis in Cd-stressed Poplar (Populus glauca)

Ádám Solti; László Gáspár; Ilona Mészáros; et al. Annals of Botany 2008. doi:10.1093/aob/mcn160

Other claims from this paper (9)

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Rubisco specific activity and activation state did not decrease in depodded plants.

Taxon: beant0
Outcome: speci fic activity nor activation state of Rubiscoe0
Direction: decreasede0

Not reportedTreatmentComparator

Verbatim

e0
“neither the speci fic activity nor activation state of Rubisco decreased”
✓ located verbatim in the source · abstract, characters 785–857

t0
“pod-removed bean”
✓ located verbatim in the source · title, characters 86–102

Title

Relationship between the suppression of photosynthesis and starch accumulation in the pod-removed bean

Hiromi Nakano; Shinichi Muramatsu; Amane Makino; et al. Australian Journal of Plant Physiology 2000. doi:10.1071/pp99071

Other claims from this paper (9)

Intervention effect Pod removal decreased bean gas-exchange photosynthesis, stomatal conductance and intercellular CO2 pressure.
Association The photosynthetic decrease was associated with increased starch content.
Intervention effect Pod removal did not change Rubisco and other photosynthetic component amounts.
Intervention effect Under saturating CO2, pod removal did not decrease photosynthesis measured by O2 evolution.
Intervention effect Depodded plants showed reduced CO2-limited photosynthesis for a given Rubisco content.
Intervention effect Shading restored the gas-exchange photosynthetic rate in depodded plants.
Intervention effect Shading restored CO2-limited photosynthesis per Rubisco protein to the level of plants with pods.
Intervention effect Shading decreased starch accumulation.
Mechanism The authors attributed photosynthetic suppression in depodded beans to hindered CO2 diffusion from chloroplast starch accumulation.

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Water stress caused only a slight, non-significant decrease of carbohydrate export from the fed leaves.

Taxon: Vitis viniferaVitis viniferat0
Treatment: Water stresse4
Outcome: carbohydrate export from the fed leavese5
Direction: decreasee5

Not reportedComparator

Verbatim

t0
“Vitis vinifera”
✓ located verbatim in the source · title, characters 73–87

e4
“Water stress caused a significant reduction of leaf water potential, photosynthesis and stomatal conductance”
✓ located verbatim in the source · abstract, characters 970–1078

e5
“but caused only a slight, non-significant, decrease of carbohydrate export from the fed leaves”
✓ located verbatim in the source · abstract, characters 1080–1174

Title

Effect of water stress on partitioning of 14C-labelled photosynthates in Vitis vinifera

Josefina Bota; Oleg Stasyk; Jaume Flexas; et al. Functional Plant Biology 2004. doi:10.1071/fp03262

Other claims from this paper (9)

Intervention effect The presence of fruits strongly stimulated 14C export from the fed leaf compared with fruitless plants.
Intervention effect The presence of fruits changed the distribution pattern of assimilates compared with fruitless plants.
Observation Fruits imported 70–80% of the total 14C exported while representing only 25% of total plant dry matter.
Association The strength of fruits as carbon sinks was independent of sink size.
Intervention effect Water stress significantly reduced leaf water potential, photosynthesis and stomatal conductance.
Intervention effect Water stress did not affect the distribution pattern of 14C in Tempranillo, except in some minor fractions.
Intervention effect Water stress did not change the 14C distribution into different fruit components.
Intervention effect In Alfonso Lavallée, water stress significantly reduced photosynthate export.
Intervention effect In Alfonso Lavallée, water stress altered the photosynthate distribution pattern.

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

UV-B did not significantly affect net photosynthesis or Fv/Fm in maize grown on sufficient nutrients.

Taxon: maizeZea mayst0
Treatment: UV-B treatmentse4
Outcome: P N and Fv/Fme4
Direction: did not significantly affecte4
Qualifier: in plants grown on sufficient nutrientse4

Not reportedComparator

Verbatim

t0
“near-isogenic maize lines”
✓ located verbatim in the source · title, characters 94–119

e4
“The UV-B treatments did not significantly affect P N and Fv/Fm in plants grown on sufficient nutrients, except in the low flavonoid lines dta and hi27 in which P N and Fv/Fm decreased by ∼15 %”
✓ located verbatim in the source · abstract, characters 1257–1449

Title

Ambient levels of UV-B in Hawaii combined with nutrient deficiency decrease photosynthesis in near-isogenic maize lines varying in leaf flavonoids: Flavonoids decrease photoinhibition in plants exposed to UV-B

T. S. L. Lau; E. Eno; G. Goldstein; et al. Photosynthetica 2006. doi:10.1007/s11099-006-0042-5

Other claims from this paper (13)

Observation In adequately fertilized plants, lines b and lc had higher flavonoid and anthocyanin contents than lines hi27 and dta.
Intervention effect UV-B induced accumulation of foliar flavonoids in maize lines hi27 and b.
Intervention effect UV-B did not induce accumulation of foliar flavonoids in the low flavonoid line dta or the high flavonoid line lc.
Intervention effect Nutrient deficiency decreased foliar flavonoid contents by 30-40%.
Intervention effect Nutrient deficiency decreased foliar anthocyanin contents by 40-50%.
Intervention effect Nutrient deficiency decreased Chl a content by 30%.
Intervention effect Nutrient deficiency decreased Chl b content by 70%.
Intervention effect In low flavonoid lines dta and hi27, UV-B decreased net photosynthesis and Fv/Fm by about 15% on sufficient nutrients.
Intervention effect UV-B decreased net photosynthesis, Fv/Fm and stomatal conductance by 20-30% in all lines when grown on low nutrients.
Observation The decrease in Fv/Fm was 10% less in the higher flavonoid lines b and lc.
Observation The photosynthetic apparatus of maize readily tolerated ambient UV-B in the tropics when plants were adequately fertilized.
Intervention effect Ambient UV-B combined with nutrient deficiency significantly reduced photosynthesis in maize.
Mechanism Nutrient deficiency increased the susceptibility of maize to UV-B-induced photoinhibition, in part by decreasing photoprotective compounds.

“decrease of the photosynthesis”

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