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.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Photosynthesis did not decrease through 87 moles per cubic meter NaCl under optimal assay conditions.

Taxon: cowpeaVigna unguiculatae0
Treatment: NaCl concentrations up to 87 moles per cubic metere1
Outcome: photosynthesise1
Direction: No decreasee1

Not reportedComparator

Verbatim

e0
“leaves of cowpea (Vigna unquiculata [L.] Walp.)”
✓ located verbatim in the source · abstract, characters 21–68

e1
“No decrease in photosynthesis was obtained for NaCl concentrations up to 87 moles per cubic meter in the plant growing media”
✓ located verbatim in the source · abstract, characters 500–624

Title

Salinity Effects on Photosynthesis in Isolated Mesophyll Cells of Cowpea Leaves

Z. Plaut; C. M. Grieve; E. Federman PLANT PHYSIOLOGY 1989. doi:10.1104/pp.91.2.493

Other claims from this paper (10)

Association CO2 fixation was maximal when isolation and assay osmotic potentials approached leaf osmotic potential.
Intervention effect Hypotonic and hypertonic media reduced photosynthesis regardless of growth salinity.
Intervention effect At 130 moles per cubic meter NaCl, photosynthesis fell only 30% under optimal assay conditions.
Observation Photosynthetic inhibition was reversible when saline stress was relieved.
Intervention effect At 173 moles per cubic meter NaCl, photosynthesis was severely and irreversibly inhibited.
Mechanism The severe photosynthetic inhibition was attributed to leaf chloride and sodium accumulation.
Observation Sorbitol uptake by intact cells was insignificant.
Association Sorbitol uptake was not associated with cell volume changes.
Observation Cells from low salinity grown plants had a light response curve similar to controls.
Intervention effect Cells grown at 173 moles per cubic meter NaCl reached light saturation at lower radiant flux density than lower salinity cells.

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Other native species had no significant decrease in net photosynthesis under water deficit.

Taxon: caatinga native speciest0
Treatment: water deficite0
Outcome: net photosynthesise0
Direction: did not suffer significant decreasee0

Not reportedComparator

Verbatim

t0
“caatinga native species”
✓ located verbatim in the source · title, characters 17–40

e0
“The other species can be considered more tolerant to drought, since net photosynthesis did not suffer significant decrease despite the harmful effects of water deficit on transpiration and stomatal conductance.”
✓ located verbatim in the source · abstract, characters 846–1056

Title

Ecophysiology of caatinga native species under semi-arid conditions

Alessandro Carlos Mesquita; Barbara França Dantas; Paulo Araquém Ramos Cairo Bioscience Journal 2018. doi:10.14393/bj-v34n6a2018-39889

Other claims from this paper (5)

Observation Mimosa spp. had the lowest chlorophyll content.
Intervention effect Water deficit significantly decreased transpiration rate in all species.
Intervention effect Water deficit significantly decreased stomatal conductance in all species.
Intervention effect Net photosynthesis declined in M urundeuva under drought.
Intervention effect Net photosynthesis declined in Cnidoscolus spp. under drought.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Four ryanodine applications at 10-day intervals caused no further decrease in apple leaf photosynthesis than a single application.

Taxon: McIntosh applet0
Treatment: Four applications of ryanodine at 10-day intervalse1
Outcome: photosynthesise1
Direction: no further decreasee1
Comparator: a single applicatione1

Verbatim

e1
“Four applications of ryanodine at 10-day intervals caused no further decrease in photosynthesis than was obtained by a single application”
✓ located verbatim in the source · abstract, characters 374–511

t0
“EFFECTS OF RYANIA AND RYANODINE ON THE APPARENT PHOTOSYNTHESIS OF McINTOSH APPLE LEAVES”
✓ located verbatim in the source · title, characters 0–87

Title

EFFECTS OF RYANIA AND RYANODINE ON THE APPARENT PHOTOSYNTHESIS OF McINTOSH APPLE LEAVES

V. A. Helson Canadian Journal of Plant Science 1960. doi:10.4141/cjps60-032

Other claims from this paper (7)

Intervention effectauthor interpretationoriginal resultno effectmeasured

Claim · model-written summary

Appropriate enhanced UV-B radiation does not decrease photosynthesis of grapevine leaves, which the authors take as strong adaptability.

Taxon: GrapevineVitist0
Treatment: appropriate enhanced UV-B radiatione5
Outcome: photosynthesise5
Direction: couldn't decreasee5

Not reportedComparator

Verbatim

t0
“Leaves of Grapevine”
✓ located verbatim in the source · title, characters 92–111

e5
“The grapevine has strong adaptability to UV-B radiation,and appropriate enhanced UV-B radiation couldn't decrease the photosynthesis of grapevine leaves”
✓ located verbatim in the source · abstract, characters 1082–1234

Title

Effect of Enhanced Ultraviolet-B Radiation on Photosynthetic Pigments and Flavonoids in the Leaves of Grapevine

Hongjuan Li; Zhou XinMing; Weiqiang Zhang Agricultural Science and Technology Hunan 2011

Other claims from this paper (11)

Association Photosynthetic pigment content in grapevine leaves increased with time under different enhanced UV-B treatments.
Intervention effect At 10.8 μW/cm2 UV-B, chlorophyll a increased by 5% relative to control.
Intervention effect At 10.8 μW/cm2 UV-B, chlorophyll b increased by 2% relative to control.
Intervention effect At 10.8 μW/cm2 UV-B, total chlorophyll increased by 4% relative to control.
Intervention effect At 10.8 μW/cm2 UV-B, carotenoid increased by 3% relative to control.
Intervention effect At 25.6 μW/cm2 UV-B, chlorophyll a increased by 11% relative to control, a significant increase.
Intervention effect At 25.6 μW/cm2 UV-B, chlorophyll b increased by 9% relative to control.
Intervention effect At 25.6 μW/cm2 UV-B, total chlorophyll increased by 10% relative to control.
Intervention effect At 25.6 μW/cm2 UV-B, carotenoid increased by 7% relative to control.
Intervention effect At 10.8 μW/cm2 UV-B, flavonoid content in grapevine leaves increased by 13% relative to control.
Intervention effect At 25.6 μW/cm2 UV-B, flavonoid content in grapevine leaves increased by 9% relative to control.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

At lower light, root cooling did not decrease whole-plant photosynthesis.

Taxon: Artemisia tridentataArtemisia tridentatat0
Treatment: root coolinge0
Outcome: A of the whole plante0
Direction: did not cause a decreasee0
Qualifier: lower PPFDe0

Not reportedComparator

Verbatim

e0
“At lower PPFD, root cooling did not cause a decrease in A of the whole plant”
✓ located verbatim in the source · abstract, characters 1218–1294

t0
“Artemisia tridentata”
✓ located verbatim in the source · title, characters 44–64

Title

Effect of Root Cooling on Photosynthesis of Artemisia tridentata Seedlings under Different Light Levels

H. BassiriRad; M. M. Caldwell; K. A. Mott Botanica Acta 1993. doi:10.1111/j.1438-8677.1993.tb00744.x

Other claims from this paper (9)

Intervention effect Root cooling reduced whole-plant net photosynthesis by 25% at high light.
Intervention effect Root cooling reduced stomatal conductance by more than 50% before photosynthesis declined.
Intervention effect Root cooling reduced intercellular CO2 concentration by about 10% at high light.
Intervention effect Photosynthesis versus intercellular CO2 curves did not differ between cold and warm soil.
Intervention effect Stomatal conductance was lower at the lower soil temperature.
Intervention effect Root cooling lowered leaf relative water content by as much as 23%.
Mechanism The authors inferred that cooling limited photosynthesis through stomatal closure linked to lower water supply.
Intervention effect At lower light, root cooling moderately reduced stomatal conductance, intercellular CO2 and relative water content.
Intervention effect Cold soil rapidly and substantially reduced root respiration at either light level.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Photoinhibitory treatment beyond 2 h did not further decrease photosynthesis in soybean.

Taxon: soybeanGlycine maxe2
Treatment: photoinhibitory treatment for periods in excess of 2 he2
Outcome: photosynthesise2
Direction: did not cause a further decreasee2

Not reportedComparator

Verbatim

e2
“Exposure to the photoinhibitory treatment for periods in excess of 2 h did not cause a further decrease of photosynthesis in soybean”
✓ located verbatim in the source · abstract, characters 691–823

Title

Photoinhibition under Atmospheric O₂, the Activation State of RuBP Carboxylase and the Content of Photosynthetic Intermediates in Soybean and Wheat

DAVID A. WARD; BERT G. DRAKE Journal of Experimental Botany 1987. doi:10.1093/jxb/38.12.1937

Other claims from this paper (7)

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Additional UV irradiation did not decrease the rate of photosynthesis relative to the control variant.

Taxon: Stevia rebaudianaStevia rebaudianat0
Treatment: additional UV irradiatione0
Outcome: rate of photosynthesise7
Direction: did not decreasee7
Comparator: control variante1

Verbatim

t0
“Stevia rebaudiana Bertoni”
✓ located verbatim in the source · title, characters 122–147

e0
“the effect of additional UV irradiation of various ranges in addition to the main one”
✓ located verbatim in the source · abstract, characters 159–244

e1
“compared with the control variant”
✓ located verbatim in the source · abstract, characters 449–482

e7
“while the rate of photosynthesis did not decrease”
✓ located verbatim in the source · abstract, characters 597–646

Title

Effect of UV Stress on the Antioxidant Capacity, Photosynthetic Activity, Flavonoid and Steviol Glycoside Accumulation of Stevia rebaudiana Bertoni

Natalia A. Semenova; Alina S. Ivanitskikh; Nadezhda I. Uyutova; et al. Horticulturae 2024. doi:10.3390/horticulturae10030210

Other claims from this paper (12)

Intervention effect Additional UV-A and UV-B irradiation slightly increased leaf fresh weight relative to the control variant in stevia.
Intervention effect UV-A irradiation significantly increased leaf surface area relative to the control variant (value 23.3 as written).
Intervention effect UV-B irradiation significantly increased leaf surface area relative to the control variant by 20.7%.
Intervention effect UV-B irradiation significantly increased total flavonoid content by 74%.
Intervention effect Additional UV-B and UV-C irradiation decreased antioxidant capacity by an average of 30% compared with the control and UV-A.
Intervention effect UV-B irradiation gave the highest steviol glycoside concentration during budding and flowering, by 13.2.
Intervention effect UV-C irradiation gave the highest steviol glycoside concentration during budding and flowering, by 11.3%.
Intervention effect UV-C irradiation caused an increase in relative chlorophyll content in stevia, reflecting light stress.
Intervention effect UV-C irradiation decreased the CO2 absorption rate of stevia.
Intervention effect UV-C irradiation inhibited stevia plant growth.
Intervention effect UV-C irradiation caused scorches and leaf morphology changes in stevia.
Recommendation The authors recommend UV-B irradiation as an optimal type of irradiation based on a set of indicators.

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.

“decrease of the photosynthesis”

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