Search claims · PlantClaims

Associationobservedoriginal resultmeasured

Claim · model-written summary

The photoacclimation range for P(max) correlated with P(max) under high light.

Taxon: riceOryza sativat0
Outcome: photoacclimation 'range' for P(max)e0
Comparator: P(max) in high light-grown plantse0

Not reportedDirection

Verbatim

e0
“The photoacclimation 'range' for P(max) correlated with P(max) in high light-grown plants”
✓ located verbatim in the source · abstract, characters 1578–1667

t0
“rice”
✓ located verbatim in the source · title, characters 44–48

Title

Trends in leaf photosynthesis in historical rice varieties developed in the Philippines since 1966

S. Hubbart; S. Peng; P. Horton; et al. Journal of Experimental Botany 2007. doi:10.1093/jxb/erm192

Other claims from this paper (10)

Observation High-light-grown rice varieties varied in light-saturated photosynthetic rate, stomatal conductance, Rubisco content, and total leaf protein.
Observation Between 1966 and 1980, P(max), g, and leaf protein declined.
Observation Between 1966 and 1980, chlorophyll and Rubisco content declined.
Observation The declining trait values recovered in varieties released after 1980.
Association P(max) correlated significantly with stomatal conductance.
Association P(max) correlated significantly with Rubisco content.
Intervention effect High and low growth light produced large differences.
Mechanism The authors conclude breeding strategy may systematically affect leaf photosynthesis.
Recommendation The authors propose P(max) as a yield improvement target when biomass limits yield.
Association The authors conclude photoacclimation capacity is related to high P(max).

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

All three grass species responded positively to nitrogen fertilization in P(n), P(max) and Phi(max).

Treatment: N fertilizatione0
Outcome: P(n), P(max), and Phi(max)e0
Direction: positive responsese0

Not reportedTaxonComparator

Verbatim

e0
“All three species showed positive responses to N fertilization in terms of P(n), P(max), and Phi(max)”
✓ located verbatim in the source · abstract, characters 1124–1225

Title

Species‐specific Response of Photosynthesis to Burning and Nitrogen Fertilization

Yanfang Zhang; Shuli Niu; Wenhua Xu; et al. Journal of Integrative Plant Biology 2008. doi:10.1111/j.1744-7909.2008.00658.x

Other claims from this paper (9)

Observation Photosynthetic rate, stomatal conductance and water use efficiency varied strongly over the growing season.
Observation C. squarrosa had significantly higher photosynthetic rate and water use efficiency than the other two grasses.
Intervention effect Burning increased early season photosynthetic rate in A. cristatum by 24–59%.
Intervention effect Burning increased early season photosynthetic rate in L. chinensis by 24–59%.
Intervention effect Burning enhanced P(max) of A. cristatum by 16–67%.
Intervention effect Burning enhanced Phi(max) in A. cristatum and L. chinensis.
Intervention effect Burning had no significant main effect on photosynthetic traits in C. squarrosa.
Association Burning-related soil moisture changes explained 51% of burning-related photosynthetic rate changes.
Association Nitrogen fertilizer-related soil extractable nitrogen changes explained 66% of photosynthetic rate changes.

Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

P_(max) was significantly positively correlated with LSP.

Taxon: Plant Speciest0
Outcome: P_(max)e1
Direction: positive correlationse1
Comparator: LSPe1

Verbatim

e0
“P_(max)and LSP”
✓ located verbatim in the source · abstract, characters 638–652

e1
“Significantly positive correlations were found between LCP and R_(day),P_(max)and LSP,and P_(max)andΦ”
✓ located verbatim in the source · abstract, characters 567–668

t0
“Plant Species”
✓ located verbatim in the source · title, characters 39–52

Title

Photosynthetic Characteristics of Some Plant Species in the Mu Us Desert

Shi Huijun; Xingchang Zhang Xibei Linxueyuan xuebao 2010

Other claims from this paper (13)

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Warming increased early- and late-season net photosynthesis through higher P(max) and J(max).

Taxon: Deschampsia flexuosaAvenella flexuosat0
Treatment: Warminge0
Outcome: early and late season P(n)e0
Direction: increasede0
Qualifier: via higher P(max) and J(max)e0

Not reportedComparator

Verbatim

e0
“Warming increased early and late season P(n) via higher P(max) and J(max).”
✓ located verbatim in the source · abstract, characters 1157–1231

t0
“Deschampsia flexuosa”
✓ located verbatim in the source · title, characters 79–99

Title

Interactive effects of elevated CO2, warming, and drought on photosynthesis of Deschampsia flexuosa in a temperate heath ecosystem

K. R. Albert; H. Ro-Poulsen; T. N. Mikkelsen; et al. Journal of Experimental Botany 2011. doi:10.1093/jxb/err133

Other claims from this paper (13)

Intervention effect Seasonal drought reduced net photosynthesis through stomatal conductance.
Intervention effect Severe experimental drought decreased net photosynthesis through lower photosynthetic capacity.
Intervention effect Severe drought reduced P(max), J(max) and V(cmax).
Intervention effect Rewetting reversed drought effects and stimulated net photosynthesis through capacity stimulation.
Intervention effect Elevated CO2 did not decrease stomatal conductance.
Intervention effect Elevated CO2 stimulated net photosynthesis through increased intercellular CO2.
Intervention effect Warming and elevated CO2 synergistically increased carbon uptake early in the season.
Intervention effect Warming and elevated CO2 synergistically increased carbon uptake after rewetting.
Intervention effect Drought and elevated CO2 had additive photosynthetic effects when soil water was low.
Intervention effect Drought and elevated CO2 synergistically stimulated net photosynthesis after rewetting.
Observation The grass showed opportunistic water consumption.
Observation The grass showed leaf dieback under low water followed by rapid active leaf regrowth after rewetting.
Mechanism The growth pattern was proposed to enable photosynthetic capacity upregulation behind combined-treatment synergy.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Severe drought reduced P(max), J(max) and V(cmax).

Taxon: Deschampsia flexuosaAvenella flexuosat0
Treatment: severe (experimental) droughte0
Outcome: P(max), J(max), and V(cmax)e0
Direction: reductione0

Not reportedComparator

Verbatim

e0
“severe (experimental) drought decreased P(n) via a reduction in photosynthetic capacity (P(max), J(max), and V(cmax))”
✓ located verbatim in the source · abstract, characters 927–1044

t0
“Deschampsia flexuosa”
✓ located verbatim in the source · title, characters 79–99

Title

Interactive effects of elevated CO2, warming, and drought on photosynthesis of Deschampsia flexuosa in a temperate heath ecosystem

K. R. Albert; H. Ro-Poulsen; T. N. Mikkelsen; et al. Journal of Experimental Botany 2011. doi:10.1093/jxb/err133

Other claims from this paper (13)

Intervention effect Seasonal drought reduced net photosynthesis through stomatal conductance.
Intervention effect Severe experimental drought decreased net photosynthesis through lower photosynthetic capacity.
Intervention effect Rewetting reversed drought effects and stimulated net photosynthesis through capacity stimulation.
Intervention effect Warming increased early- and late-season net photosynthesis through higher P(max) and J(max).
Intervention effect Elevated CO2 did not decrease stomatal conductance.
Intervention effect Elevated CO2 stimulated net photosynthesis through increased intercellular CO2.
Intervention effect Warming and elevated CO2 synergistically increased carbon uptake early in the season.
Intervention effect Warming and elevated CO2 synergistically increased carbon uptake after rewetting.
Intervention effect Drought and elevated CO2 had additive photosynthetic effects when soil water was low.
Intervention effect Drought and elevated CO2 synergistically stimulated net photosynthesis after rewetting.
Observation The grass showed opportunistic water consumption.
Observation The grass showed leaf dieback under low water followed by rapid active leaf regrowth after rewetting.
Mechanism The growth pattern was proposed to enable photosynthetic capacity upregulation behind combined-treatment synergy.

Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

P_(max) was significantly positively correlated with Φ.

Taxon: Plant Speciest0
Outcome: P_(max)e0
Direction: positive correlationse0
Comparator: Φe0

Verbatim

e0
“Significantly positive correlations were found between LCP and R_(day),P_(max)and LSP,and P_(max)andΦ”
✓ located verbatim in the source · abstract, characters 567–668

t0
“Plant Species”
✓ located verbatim in the source · title, characters 39–52

Title

Photosynthetic Characteristics of Some Plant Species in the Mu Us Desert

Shi Huijun; Xingchang Zhang Xibei Linxueyuan xuebao 2010

Other claims from this paper (13)

Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

P(max) correlated significantly with stomatal conductance.

Taxon: riceOryza sativat0
Outcome: P(max)e0
Qualifier: ge0

Not reportedGeneDirection

Verbatim

e0
“P(max) showed significant correlations with both g and Rubisco content”
✓ located verbatim in the source · abstract, characters 1407–1477

t0
“rice”
✓ located verbatim in the source · title, characters 44–48

Title

Trends in leaf photosynthesis in historical rice varieties developed in the Philippines since 1966

S. Hubbart; S. Peng; P. Horton; et al. Journal of Experimental Botany 2007. doi:10.1093/jxb/erm192

Other claims from this paper (10)

Observation High-light-grown rice varieties varied in light-saturated photosynthetic rate, stomatal conductance, Rubisco content, and total leaf protein.
Observation Between 1966 and 1980, P(max), g, and leaf protein declined.
Observation Between 1966 and 1980, chlorophyll and Rubisco content declined.
Observation The declining trait values recovered in varieties released after 1980.
Association P(max) correlated significantly with Rubisco content.
Intervention effect High and low growth light produced large differences.
Association The photoacclimation range for P(max) correlated with P(max) under high light.
Mechanism The authors conclude breeding strategy may systematically affect leaf photosynthesis.
Recommendation The authors propose P(max) as a yield improvement target when biomass limits yield.
Association The authors conclude photoacclimation capacity is related to high P(max).

Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

P(max) correlated significantly with Rubisco content.

Taxon: riceOryza sativat0
Gene: Rubiscoe0
Outcome: P(max)e0

Not reportedDirection

Verbatim

e0
“P(max) showed significant correlations with both g and Rubisco content”
✓ located verbatim in the source · abstract, characters 1407–1477

t0
“rice”
✓ located verbatim in the source · title, characters 44–48

Title

Trends in leaf photosynthesis in historical rice varieties developed in the Philippines since 1966

S. Hubbart; S. Peng; P. Horton; et al. Journal of Experimental Botany 2007. doi:10.1093/jxb/erm192

Other claims from this paper (10)

Observation High-light-grown rice varieties varied in light-saturated photosynthetic rate, stomatal conductance, Rubisco content, and total leaf protein.
Observation Between 1966 and 1980, P(max), g, and leaf protein declined.
Observation Between 1966 and 1980, chlorophyll and Rubisco content declined.
Observation The declining trait values recovered in varieties released after 1980.
Association P(max) correlated significantly with stomatal conductance.
Intervention effect High and low growth light produced large differences.
Association The photoacclimation range for P(max) correlated with P(max) under high light.
Mechanism The authors conclude breeding strategy may systematically affect leaf photosynthesis.
Recommendation The authors propose P(max) as a yield improvement target when biomass limits yield.
Association The authors conclude photoacclimation capacity is related to high P(max).

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

P max declined quadratically with regrowth duration.

Organ / stage: regrowth duratione0
Outcome: P maxe0
Direction: decreasee0

Not reportedTaxon

Verbatim

e0
“The decrease in P max with regrowth duration was described by a quadratic function.”
✓ located verbatim in the source · abstract, characters 356–439

Title

Modelling net photosynthetic rate of field‐grown cocksfoot leaves to account for regrowth duration

P. L. Peri; D. J. Moot; D. L. McNeil; et al. New Zealand Journal of Agricultural Research 2003. doi:10.1080/00288233.2003.9513536

Other claims from this paper (7)

Observation P max was constant and maximal from 20 to 25 days regrowth at 27.4 μmol CO 2 m –2 s −1.
Association P max then decreased by 0.42 μmol CO 2 m –2 s −1 per day.
Mechanism Leaf chronological age contributed to the decline in P max.
Mechanism Canopy shading during leaf expansion contributed to declining P max.
Mechanism Age and shading decreased leaf nitrogen, chlorophyll and stomatal conductance.
Observation Water stress at 40–60 days caused greater stomatal closure than expected.
Method / resource The multiplicative model explained 80% of variation in P max.

Observationobservedoriginal resultmeasured

Claim · model-written summary

At low light NPT had higher P(max) than IR72.

Taxon: riceOryza sativat0
Material: NPTe1
Treatment: LLe0
Outcome: P(max)e0
Direction: highere0
Comparator: IR72e0

Verbatim

e0
“higher P(max) (measured at 350 microL L(-1) CO(2)) at LL than IR72”
✓ located verbatim in the source · abstract, characters 1052–1118

t0
“Rice”
✓ located verbatim in the source · title, characters 15–19

e1
“Rubisco levels were higher in NPT than IR72 contrasting with P(max).”
✓ located verbatim in the source · abstract, characters 1177–1245

Title

Acclimation of Rice Photosynthesis to Irradiance under Field Conditions

Erik H. Murchie; Stella Hubbart; Yizhu Chen; et al. PLANT PHYSIOLOGY 2002. doi:10.1104/pp.011098

Other claims from this paper (7)

Observation Rubisco amount, chlorophyll a/b, and P(max) declined from canopy top to base.
Intervention effect IR72 P(max) acclimated between low and medium light.
Intervention effect IR72 P(max) did not differ between medium and high light.
Intervention effect IR72 Rubisco amount increased from medium to high light.
Intervention effect NPT P(max) acclimated between medium and high light.
Observation Rubisco levels were higher in NPT than IR72.
Observation A leaf aging effect between uppermost leaf positions was suggested.

“P max”

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Over time

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