Search claims · PlantClaims

Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

After a decrease in irradiance, maize photosynthesis is transiently buffered by energy from large metabolite pools in the energy shuttle and CCM.

Taxon: maizeZea mayse0
Treatment: a decrease in irradiancee1
Outcome: photosynthesise1
Qualifier: transiently buffered by energy delivered from transformations in the large metabolite poolse1

Verbatim

e0
“We subjected maize (Zea mays) to a sudden increase or decrease of irradiance”
✓ located verbatim in the source · abstract, characters 408–484

e1
“After a decrease in irradiance, photosynthesis is transiently buffered by energy delivered from transformations in the large metabolite pools in the energy shuttle and CCM”
✓ located verbatim in the source · abstract, characters 726–897

Title

Metabolite profiling reveals slow and uncoordinated adjustment of C4 photosynthesis to sudden changes in irradiance.

Arrivault, Stéphanie; Medeiros, David Barbosa; Sales, Cristina Rodrigues Gabriel; et al. Apollo (University of Cambridge) 2025. doi:10.17863/cam.122891

Other claims from this paper (5)

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

After a decrease in irradiance, photosynthesis was transiently buffered by energy from metabolite pool transformations.

Taxon: maizeZea mayse1
Treatment: decrease in irradiancee2
Outcome: photosynthesise2
Direction: transiently bufferede2
Qualifier: energy delivered from transformations in the large metabolite pools in the energy shuttle and CCMe2

Not reportedComparator

Verbatim

e1
“We subjected maize (Zea mays) to a sudden increase or decrease of irradiance in the nonsaturating range”
✓ located verbatim in the source · abstract, characters 408–511

e2
“After a decrease in irradiance, photosynthesis is transiently buffered by energy delivered from transformations in the large metabolite pools in the energy shuttle and CCM”
✓ located verbatim in the source · abstract, characters 725–896

Title

Metabolite profiling reveals slow and uncoordinated adjustment of C4 photosynthesis to sudden changes in irradiance

Stéphanie Arrivault; David Barbosa Medeiros; Cristina Rodrigues Gabriel Sales; et al. PLANT PHYSIOLOGY 2025. doi:10.1093/plphys/kiaf508

Other claims from this paper (5)

Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

The authors conclude that stomatal limitation caused by osmotic stress is the dominating factor in the decrease of photosynthesis in maize seedlings when the NaCl stress period is short.

Taxon: Maize seedlingsZea mayse0
Outcome: photosynthesis' decreasee1
Qualifier: stomatal limitation caused by osmotic stresse1

Verbatim

e0
“Maize seedlings were treated with 100 NaCl mmol/L”
✓ located verbatim in the source · abstract, characters 0–49

e1
“the stomatal limitation caused by osmotic stress is dominating factor of the photosynthesis' decrease when the stress period is short”
✓ located verbatim in the source · abstract, characters 590–723

Title

The Possible Mechanisms of NaCl Inhibit Photosythesis of Maize Seedlings

Guo Wei Shu 2001

Other claims from this paper (11)

Intervention effect Photosynthetic rate of maize seedlings decreased with time under 100 mmol/L NaCl.
Intervention effect Stomatal conductance of maize seedlings decreased under NaCl stress.
Intervention effect Substomatal CO2 concentration decreased at first and then increased gradually under NaCl stress.
Intervention effect MDA content increased in maize seedlings under NaCl stress.
Intervention effect Cl- content increased in maize seedlings under NaCl stress.
Intervention effect Pi content increased in maize seedlings under NaCl stress.
Intervention effect Soluble carbohydrate content increased in maize seedlings under NaCl stress.
Intervention effect The Chl a/Chl b ratio decreased in maize seedlings under NaCl stress.
Intervention effect Fv/Fm decreased in maize seedlings under NaCl stress.
Intervention effect The activities of MDH and PEPC decreased in maize seedlings under NaCl stress.
Mechanism The authors conclude that the increase in active oxygen is the basic non-stomatal inhibiting factor of photosynthesis in NaCl-stressed maize seedlings.

Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

The decrease in maize photosynthesis was not due to stomatal closure.

Taxon: Zea mays L.Zea mayst0
Outcome: decrease in PNe0
Qualifier: stomatal closuree0

Verbatim

e0
“The decrease in PN was not the result of stomatal closure”
✓ located verbatim in the source · abstract, characters 609–666

t0
“Zea mays L.”
✓ located verbatim in the source · title, characters 118–129

Title

Recovery of net CO2 assimilation after heat stress is correlated with recovery of oxygen-evolving-complex proteins in Zea mays L.

S.A. HECKATHORN; J.S. COLEMAN; R.L. HALLBERG Photosynthetica 1997. doi:10.1023/a:1006899314677

Other claims from this paper (8)

Intervention effect Net photosynthetic rate in maize decreased with heat stress.
Observation Photosynthetic rate recovered four days after the second heat shock.
Intervention effect Cellular levels of three OEC proteins fell during heat stress.
Association OEC16 had the greatest protein decrease and the closest correlation with photosynthetic decline.
Association OEC protein recovery coincided with full photosynthetic recovery after the second heat stress.
Observation Other photosynthetic proteins declined less than OEC proteins.
Observation The other photosynthetic proteins recovered at least two days before full photosynthetic recovery.
Mechanism Heat-related OEC protein loss may limit post-stress carbon fixation recovery.

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Greater assimilation apparatus size coincided with decreased photosynthesis productivity.

Taxon: CORNZea mays subsp. mayst0
Organ / stage: assimilation apparatuse0
Outcome: photosynthesis productivitye0
Direction: decreasee0

Verbatim

e0
“as the size of the assimilation apparatus increases, a decrease in photosynthesis productivity is noted.”
✓ located verbatim in the source · abstract, characters 556–660

t0
“CORN”
✓ located verbatim in the source · title, characters 37–41

Title

SILICON FERTILIZERS AND FORMATION OF CORN YIELDS

S.A. SEMINA; I.V. GAVRYUSHINA; A.S. PALIYCHUK; et al. Niva Povolzh`ia 2024. doi:10.36461/np.2024.70.2.019

Other claims from this paper (10)

Intervention effect Silicon fertilizers increased photosynthetic potential by 9.6 to 17.8 percent.
Intervention effect Binary Nanokremniy and Microvit treatment formed a large total leaf surface.
Intervention effect Microvit at the five leaf stage formed a large total leaf surface.
Intervention effect Single Microvit treatment added 7.5 to 8.0 t/ha green mass.
Intervention effect Double Microvit treatment added 12.4 t/ha or 27.6 percent of control.
Intervention effect Nanokremniy top dressing at 7 to 8 leaves added 3.1 to 4.4 t/ha green mass.
Intervention effect Kelic Potassium plus Silicon at 7 to 8 leaves added 3.1 to 4.4 t/ha green mass.
Intervention effect Five leaf stage treatment increased green mass by 1.3 to 1.9 t/ha.
Intervention effect Binary Nanokremniy increased phytomass yield by 15.6 percent.
Intervention effect Binary Potassium plus Kelic Silicon increased phytomass yield by 10.3 percent.

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)

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

After a decrease in irradiance, photosynthesis declined and metabolism took several minutes to recover to a suboptimal state.

Taxon: maizeZea mayse1
Outcome: decline in photosynthesise3
Qualifier: takes several minutes to recovere3

Verbatim

e1
“We subjected maize (Zea mays) to a sudden increase or decrease of irradiance in the nonsaturating range”
✓ located verbatim in the source · abstract, characters 408–511

e3
“During the subsequent decline in photosynthesis, metabolism transitions to a suboptimal state for photosynthesis in low irradiance, from which it takes several minutes to recover”
✓ located verbatim in the source · abstract, characters 898–1076

Title

Metabolite profiling reveals slow and uncoordinated adjustment of C4 photosynthesis to sudden changes in irradiance

Stéphanie Arrivault; David Barbosa Medeiros; Cristina Rodrigues Gabriel Sales; et al. PLANT PHYSIOLOGY 2025. doi:10.1093/plphys/kiaf508

Other claims from this paper (5)

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)

Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

The maize photosynthesis decline was linked to leaf wettability and temperature below its optimum.

Taxon: maizeZea mayse0
Outcome: decrease of maize net photosynthesise0
Value: 60–80°e0
Qualifier: high leaf wettabilitye0

Verbatim

e0
“The decrease of maize net photosynthesis during sprinkler irrigation was linked to the high leaf wettability (water contact angles from 60–80°) and the decrease in temperature below the optimum range for photosynthesis.”
✓ located verbatim in the source · abstract, characters 1088–1307

Title

Daytime Sprinkler Irrigation Effects on Net Photosynthesis of Maize and Alfalfa

Yenny F. Urrego‐Pereira; Antonio Martínez‐Cob; Victoria Fernández; et al. Agronomy Journal 2013. doi:10.2134/agronj2013.0119

Other claims from this paper (13)

Intervention effect Sprinkler irrigation lowered air temperature over maize by 1.5°C.
Intervention effect Sprinkler irrigation lowered air temperature over alfalfa by 1.7°C.
Intervention effect Sprinkler irrigation lowered air vapor pressure deficit by 0.44 kPa for maize.
Intervention effect Sprinkler irrigation lowered air vapor pressure deficit by 0.44 kPa for alfalfa.
Intervention effect Sprinkler irrigation lowered maize canopy temperature by 5.1°C.
Intervention effect Sprinkler irrigation lowered alfalfa canopy temperature by 5.9°C.
Intervention effect Sprinkler irrigation decreased maize net photosynthesis on 80% of days, averaging a 19% reduction.
Intervention effect Sprinkler irrigation increased alfalfa net photosynthesis on 36% of days.
Intervention effect Sprinkler irrigation decreased alfalfa net photosynthesis on 14% of days.
Intervention effect Sprinkler irrigation had no effect on alfalfa net photosynthesis on half the days.
Mechanism Alfalfa leaf hydrophobicity and broad optimal temperature range may explain the lack of photosynthetic response.
Recommendation The authors suggest avoiding daytime solid-set sprinkler irrigation for maize.
Recommendation The authors suggest daytime solid-set sprinkler irrigation can be used for alfalfa.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

A slight decrease in apparent photosynthesis was observed even at 0.1 ppm ozone.

Taxon: corn, rice and peanut plantsArachis hypogaea Oryza sativaZea mays subsp. mayse1
Treatment: 0.1 ppme2
Outcome: Apparent photosynthesise0
Direction: slight decreasee2

Not reportedComparator

Verbatim

e0
“Apparent photosynthesis of 3 kinds of plant used in this experiment decreased to a considerable extent when exposed to a higher concentration than 0.5 ppm”
✓ located verbatim in the source · abstract, characters 372–526

e1
“the visible injuries to corn, rice and peanut plants”
✓ located verbatim in the source · abstract, characters 318–370

e2
“although a slight decrease was observed even at 0.1 ppm”
✓ located verbatim in the source · abstract, characters 528–583

Title

Studies on the Mechanism of Injurious Effects of Toxic Gases on Crop plants : XIII. Effects of ozone in the air on the apparent photosynthesis of corn, rice and peanut plants

Tetsuro TANIYAMA; Kazumi YAMASHITA; Tonao KOIKE Japanese Journal of Crop Science 1976. doi:10.1626/jcs.45.9

Other claims from this paper (10)

Intervention effect Apparent photosynthesis of corn, rice and peanut decreased markedly at ozone above 0.5 ppm.
Intervention effect Ozone-lowered photosynthesis rate and its extent followed the order peanut > rice > corn.
Observation Visible injury followed the same order: peanut > rice > corn.
Intervention effect Photosynthesis of corn did not fully recover within 2 hours after ozone treatment stopped.
Intervention effect Photosynthesis of rice showed a clear trend to recover after ozone treatment stopped.
Intervention effect Photosynthesis of peanut did not recover and kept decreasing for 1 hour after ozone treatment stopped.
Observation Peanut photosynthesis decreased in proportion to the increase in visible injury.
Observation Visible injuries appeared in rice when photosynthesis had decreased by 70%.
Observation Visible injuries appeared in corn when photosynthesis had decreased by 65%.
Observation Degrees of invisible injury, judged from photosynthetic rate under ozone, ranked rice > corn > peanut.

“decrease of the photosynthesis”

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