Search claims · PlantClaims

Intervention effectobservedreview summarynegativemeasured

Claim · model-written summary

SXD1-deficient plants were unable to decrease the expression of genes essential for photosynthesis.

Taxon: SXD1-deficient plantse4
Treatment: SXD1-deficiente4
Outcome: expression of genes essential for photosynthesise4
Direction: unable to decreasee4

Not reportedComparator

Verbatim

e4
“Rather, SXD1-deficient plants were unable to decrease the expression of genes essential for photosynthesis”
✓ located verbatim in the source · abstract, characters 548–654

Title

Chloroplast to Nucleus Feedback by SXD1

Science s STKE 2001. doi:10.1126/stke.2001.82.tw3

Other claims from this paper (6)

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 resultpositivemeasured

Claim · model-written summary

Calcium chloride pretreatment reduced the heat induced decrease in net photosynthesis.

Taxon: tobaccoNicotiana tabacumt0
Treatment: CaCl2 pretreatmente0
Outcome: net photosynthesis rate(Pn)e0
Direction: reduced the decreasee0

Not reportedComparator

Verbatim

e0
“Under heat stress,CaCl2 pretreatment greatly reduced the decrease in net photosynthesis rate(Pn) and maximum photochemical efficiency of PSⅡ(Fv/Fm).”
✓ located verbatim in the source · abstract, characters 623–771

t0
“tobacco”
✓ located verbatim in the source · title, characters 101–108

Title

Alleviative effects of exogenous CaCl2 on the inhibition of photosynthesis induced by heat stress in tobacco.

Wei Tan; Qingliang Li; Luo Yin; et al. Zhongguo nongye Kexue 2009

Other claims from this paper (6)

Intervention effect Calcium chloride pretreatment reduced the heat induced decrease in maximum PSII efficiency.
Intervention effect Calcium chloride alleviated heat damage to PSII electron transport and the oxygen evolving complex.
Intervention effect Calcium chloride enhanced SOD, POD, CAT and APX activities.
Intervention effect Calcium chloride reduced hydrogen peroxide accumulation.
Intervention effect Calcium chloride decreased MDA accumulation.
Intervention effect A 20 mmol·L-1 calcium chloride pretreatment gave the highest antioxidant enzyme activities and photosynthetic ability.

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Cadmium-associated growth inhibition accompanied a significant decrease in net photosynthesis.

Taxon: B. schmidtiiBetula schmidtiie0
Treatment: Cd treatmente1
Outcome: net photosynthesis measured as $CO_2$ assimilatione0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“the growth inhibition of B. schmidtii seedlings was accompanied by a significant decrease in net photosynthesis measured as $CO_2$ assimilation”
✓ located verbatim in the source · abstract, characters 1108–1251

e1
“Cd treatment levels of three families”
✓ located verbatim in the source · abstract, characters 798–835

Title

Differences in Growth and Photosynthesis among Three Half-sib Families of Betula schmidtii in Response to Cd Treatment

;;;; The Korean Journal of Ecology 2004. doi:10.5141/jefb.2004.27.3.147

Other claims from this paper (4)

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Chronic acid fog suppressed a decrease in net photosynthesis through its nitrogen load.

Taxon: momi firAbies firmae1
Treatment: chronic acid fog exposuree0
Outcome: net photosynthesis ratee0
Direction: suppressed the decreasee0
Qualifier: nitrogen loade0

Not reportedComparator

Verbatim

e0
“chronic acid fog exposure suppressed the decrease in net photosynthesis rate, due to its nitrogen load.”
✓ located verbatim in the source · abstract, characters 1128–1231

e1
“momi fir (Abies firma Sieb. et Zucc.) trees”
✓ located verbatim in the source · abstract, characters 91–134

Title

Response of gas exchange rates inAbies firmaseedlings to various additional stresses under chronic acid fog stress

Koji Yoshida; Ryota Shibasaki; Chika Takami; et al. Journal of Forest Research 2004. doi:10.1007/s10310-003-0069-4

Other claims from this paper (5)

Observation Under chronic acid fog, momi fir seedlings opened stomata excessively in summer and closed them in winter.
Intervention effect Stomata of acid fog exposed fir seedlings tended to open under drought.
Intervention effect Ozone exposure visibly injured needles of acid fog exposed fir seedlings.
Mechanism Stomatal aperture regulated net photosynthesis in acid fog exposed fir seedlings.
Mechanism The authors infer that acid fog disturbs stomatal control in fir seedlings.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

TCA inhibited photosynthesis in Phaseolus vulgaris, with a 37% decrease at the highest TCA level supplied.

Taxon: P. vulgarisPhaseolus vulgarise0
Treatment: TCAe0
Outcome: Photosynthetic inhibitione0
Direction: decreasee0
Value: 37%e0
Qualifier: highest level of TCA suppliede0

Not reportedComparator

Verbatim

e0
“Photosynthetic inhibition by TCA was observed in both species, this being greater at the highest level of TCA supplied in Z. mays (85% decrease) than in P. vulgaris (37% decrease)”
✓ located verbatim in the source · abstract, characters 737–916

Title

Constraints on photosynthesis of C3 and C4 crop plants by trichloroacetic acid, an atmogenically generated pollutant

A.J. Strauss; G.H.J. Krüger; P.D.R. van Heerden; et al. South African Journal of Botany 2004. doi:10.1016/s0254-6299(15)30176-9

Other claims from this paper (8)

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

TCA inhibited photosynthesis in Zea mays, with an 85% decrease at the highest TCA level supplied.

Taxon: Z. maysZea mayse0
Treatment: TCAe0
Outcome: Photosynthetic inhibitione0
Direction: decreasee0
Value: 85%e0
Qualifier: highest level of TCA suppliede0

Not reportedComparator

Verbatim

e0
“Photosynthetic inhibition by TCA was observed in both species, this being greater at the highest level of TCA supplied in Z. mays (85% decrease)”
✓ located verbatim in the source · abstract, characters 737–881

Title

Constraints on photosynthesis of C3 and C4 crop plants by trichloroacetic acid, an atmogenically generated pollutant

A.J. Strauss; G.H.J. Krüger; P.D.R. van Heerden; et al. South African Journal of Botany 2004. doi:10.1016/s0254-6299(15)30176-9

Other claims from this paper (8)

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 resultnegativemeasured

Claim · model-written summary

Drought damaged maize cell membranes and decreased chlorophyll content and photosynthesis.

Taxon: MaizeZea mayst0
Treatment: droughte0
Outcome: damage of cell-membrane,the decrease of chlorophyll content and photosynthesise0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“drought lead to damage of cell-membrane,the decrease of chlorophyll content and photosynthesis”
✓ located verbatim in the source · abstract, characters 178–272

t0
“Maize Leaf”
✓ located verbatim in the source · title, characters 54–64

Title

The Physiological Mechanism of Compensation Effect in Maize Leaf by Re-watering after Draught Stress

Xue Jiquan Xibei nongye xuebao 2009

Other claims from this paper (7)

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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