Search claims · PlantClaims

Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

The decrease of diffusive conductance was more effective than the decrease of photosynthetic activity in lowering photosynthesis under high vapor pressure deficit.

Taxon: riceOryza sativat0
Treatment: high vapor pressure deficite6
Outcome: decrease of photosynthesise6
Qualifier: decreasing of diffusive conductance was more effectivee6

Verbatim

t0
“photosynthesis of rice leaves”
✓ located verbatim in the source · title, characters 36–65

e6
“the decreasing of diffusive conductance was more effective on the decrease of photosynthesis under high vapor pressure deficit than the decreasing of photosynthetic activity”
✓ located verbatim in the source · abstract, characters 2282–2455

Title

Effect of vapor pressure deficit on photosynthesis of rice leaves with reference to light and CO2 utilization efficiency.

Kuniyuki SAITOH; Kuni ISHIHARA Japanese Journal of Crop Science 1987. doi:10.1626/jcs.56.163

Other claims from this paper (12)

Intervention effect Transpiration rate increased rapidly as vapor pressure deficit changed from low to high.
Intervention effect Photosynthetic rate decreased as vapor pressure deficit changed from low to high.
Intervention effect Diffusive conductance decreased as vapor pressure deficit changed from low to high.
Intervention effect Intercellular CO2 concentration decreased as vapor pressure deficit changed from low to high.
Intervention effect Light utilization efficiency decreased under high vapor pressure deficit.
Intervention effect CO2 utilization efficiency decreased under high vapor pressure deficit.
Association Intercellular CO2 concentration decreased with photosynthetic rate and diffusive conductance under high vapor pressure deficit.
Intervention effect Under high vapor pressure deficit the slope between ambient CO2 and intercellular CO2 was smaller than under low vapor pressure deficit.
Association Photosynthetic rate is hyperbolically related to diffusive conductance.
Association Intercellular CO2 concentration is hyperbolically related to diffusive conductance.
Association Transpiration rate is linearly related to diffusive conductance.
Intervention effect Water use efficiency could be increased if diffusive conductance were decreased without decreasing mesophyll photosynthetic activity.

Associationobservedoriginal resultmeasured

Claim · model-written summary

The initial decline in soybean leaf photosynthesis is correlated with a decrease in leaf transpiration.

Taxon: soybeanGlycine maxe1
Organ / stage: leafe3
Outcome: leaf transpiratione3
Direction: decreasee3
Qualifier: initial decline in photosynthesise3

Verbatim

e3
“The initial decline in photosynthesis is correlated with a decrease in leaf transpiration”
✓ located verbatim in the source · abstract, characters 321–410

e1
“Depodding soybean (Glycine max [L] Merr. cv Wye) plants”
✓ located verbatim in the source · abstract, characters 0–55

Title

Effect of Pod Removal on Leaf Senescence in Soybeans

Vernon A. Wittenbach PLANT PHYSIOLOGY 1982. doi:10.1104/pp.70.5.1544

Other claims from this paper (7)

Intervention effect Depodding soybean plants inhibited leaf senescence, indicated by retention of leaf chlorophyll and soluble protein.
Intervention effect Depodding soybean leaves showed earlier decline of photosynthesis and Rubisco levels than podded controls.
Association The later decline in soybean leaf function is associated with the loss of Rubisco.
Intervention effect Total soluble protein remained high in depodded soybean plants.
Intervention effect Several polypeptides, three in particular, increased in depodded soybean leaves.
Intervention effect Depodding is interpreted to change the function of the soybean leaf rather than only delay its decline.
Association Depodding changed specific leaf weight and starch content, suggesting that the leaf may be changing to a storage organ.

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.

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Sunflower turgor and photosynthesis recovered as stomatal conductance began to decrease

Taxon: sunflowerHelianthus annuuse7
Outcome: recovery of turgor and photosynthesise6
Qualifier: as stomatal conductance began to decreasee6

Verbatim

e7
“for leaves of sunflower (Helianthus animus L.) grown at low PPFD, the increase in VPD led to leaf wilting and decreased photosynthesis”
✓ located verbatim in the source · abstract, characters 1088–1222

e6
“followed by recovery of turgor and photosynthesis as stomatal conductance began to decrease”
✓ located verbatim in the source · abstract, characters 1224–1315

Title

In-Phase Cycling of Photosynthesis and Conductance at Saturating Carbon Dioxide Pressure Induced by Increases in Water Vapour Pressure Deficit

JAMES A. BUNCE Journal of Experimental Botany 1987. doi:10.1093/jxb/38.9.1413

Other claims from this paper (10)

Mechanismobservedoriginal resultno effectmeasured

Claim · model-written summary

The decrease in photosynthesis with age was not due to mutual shading.

Taxon: Plantago lanceolataPlantago lanceolatat0
Outcome: decreasee6
Qualifier: not due to mutual shadinge6

Verbatim

e6
“this decrease was not due to mutual shading”
✓ located verbatim in the source · abstract, characters 751–794

t0
“Plantago lanceolata”
✓ located verbatim in the source · title, characters 21–40

Title

Energy metabolism of Plantago lanceolata as dependent on the supply of mineral nutrients

Hans Lambers; Freek Posthumus; Ineke Stulen; et al. Physiologia Plantarum 1981. doi:10.1111/j.1399-3054.1981.tb00883.x

Other claims from this paper (12)

Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

The more marked photosynthesis decline in stressed simulated swards resulted both from more complete stomatal closure and from a decrease in the quantum efficiency of photosynthesis.

Taxon: perennial ryegrassLolium perennee0
Outcome: decline in photosynthesise1
Qualifier: more complete stomatal closuree1

Verbatim

e0
“swards of perennial ryegrass”
✓ located verbatim in the source · abstract, characters 49–77

e1
“The more marked decline in photosynthesis in the stressed simulated swards was not only the consequence of more complete stomatal closure but also a decrease in the quantum efficiency of photosynthesis”
✓ located verbatim in the source · abstract, characters 1207–1408

Title

Water stress in field‐grown perennial ryegrass.

M. B. JONES; E. L. LEAFE; W. STILES Annals of Applied Biology 1980. doi:10.1111/j.1744-7348.1980.tb04772.x

Other claims from this paper (11)

Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

At simulated 25% ozone reduction, photosynthesis recovered after an initial decrease.

Taxon: loblolly pinePinus taedat0
Treatment: UV‐B radiation which simulated a 25% stratospheric ozone reductiont1
Outcome: photosynthesise0
Direction: recoverye0
Qualifier: after an initial decreasee0

Not reportedComparator

Verbatim

e0
“which paralleled a recovery in photosynthesis and growth after an initial decrease in these characteristics”
✓ located verbatim in the source · abstract, characters 969–1076

t0
“loblolly pine”
✓ located verbatim in the source · title, characters 42–55

t1
“UV‐B radiation which simulated a 25% stratospheric ozone reduction”
✓ located verbatim in the source · abstract, characters 825–891

Title

The effects of ultraviolet‐B radiation on loblolly pine. I. Growth, photosynthesis and pigment production in greenhouse‐grown seedlings

Joe H. Sullivan; Alan H. Teramura Physiologia Plantarum 1989. doi:10.1111/j.1399-3054.1989.tb04970.x

Other claims from this paper (11)

Intervention effect The lowest supplemental UV-B reduced seedling growth after one month.
Intervention effect The lowest supplemental UV-B reduced photosynthetic capacity after one month.
Intervention effect Those initial reductions persisted and biomass production was lower.
Intervention effect Lowest supplemental UV-B did not increase needle UV-B absorbing compounds.
Intervention effect At simulated 25% ozone reduction, UV-B absorbing compounds increased after six months.
Intervention effect At simulated 25% ozone reduction, growth recovered after an initial decrease.
Intervention effect At the highest UV-B irradiance, absorbing compounds increased more rapidly.
Intervention effect Highest UV-B irradiance had no growth effect until after four months.
Intervention effect Highest UV-B irradiance had no photosynthetic capacity effect until after four months.
Intervention effect UV-B had no observed effect on needle chlorophyll concentration.
Intervention effect UV-B had no observed effect on stomatal conductance.

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)

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Photosynthesis decrease was associated with greater water stress under whole-plant than root-only cooling.

Treatment: chill‐induced water stresse0
Outcome: decrease in photosynthesise0
Direction: associated withe0

Not reportedTaxon

Verbatim

e0
“The decrease in photosynthesis was associated with a chill‐induced water stress that was moderate to severe when the entire plant was cooled, and slight to moderate when only the roots were cooled”
✓ located verbatim in the source · abstract, characters 1110–1306

Title

Effects of Chilling on Photosynthetic Capacity, and Leaf Carbohydrate and Nitrogen Status of Soybean¹

L. C. Purcell; D. A. Ashley; H. R. Boerma Crop Science 1987. doi:10.2135/cropsci1987.0011183x002700010023x

Other claims from this paper (10)

Intervention effect Whole-plant cooling reduced plant photosynthetic capacity nearly 100% after one night.
Intervention effect Whole-plant cooling reduced leaf photosynthetic capacity by 60 to 80% at R2.
Intervention effect Whole-plant cooling reduced leaf photosynthetic capacity by 80 to 100% at R6.
Observation Low PPC and LPC persisted until after one night of recovery at 19°C.
Intervention effect Whole-plant cooling affected photosynthesis more than root-only cooling.
Observation All cultivars recovered more than 90% PPC at R2 by Day 5.
Observation Cobb and Tracy recovered about 80% PPC at R6.
Observation Davis recovered about 70% PPC at R6.
Association Photosynthesis recovery was not associated with carbohydrate level.
Association Greater photosynthesis recovery at R2 than R6 appeared related to leaf N conservation at R2 and reduction at R6.

Observationobservedoriginal resultmeasured

Claim · model-written summary

The greater decrease in stomatal conductance and photosynthesis in herbs during shade resulted in improved water use efficiency.

Taxon: herbse0
Treatment: shadee0
Outcome: improved water use efficiencye0

Verbatim

e0
“The greater decrease in stomatal conductance and photosynthesis in herbs during shade resulted in improved water use efficiency”
✓ located verbatim in the source · abstract, characters 1440–1567

Title

Influence of Growth from on Ecophysiological Responses to Variable Sunlight in Subalpine Plants

Alan K. Knapp; William K. Smith Ecology 1989. doi:10.2307/1941376

Other claims from this paper (9)

“decrease of the photosynthesis”

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