Search claims · PlantClaims

Observationobservedoriginal resultmeasured

Claim · model-written summary

The root respiration increase was 7.4%.

Taxon: Norway sprucePicea abiest0
Outcome: root respiratione0
Direction: increasee0
Value: 7.4 %e0

Verbatim

e0
“This increase in root respiration was of the same order of magnitude (7.4 %) as the decrease in dry matter production by mycorrhizal plants (10.1 %).”
✓ located verbatim in the source · abstract, characters 1591–1740

t0
“Norway spruce”
✓ located verbatim in the source · title, characters 64–77

Title

Growth and mineral nutrition of non‐mycorrhizal and mycorrhizal Norway spruce (Picea abies) seedlings grown in semi‐hydroponic sand culture

LUDGER ELTROP; HORST MARSCHNER New Phytologist 1996. doi:10.1111/j.1469-8137.1996.tb01915.x

Other claims from this paper (19)

Intervention effect Mycorrhizal infection decreased seedling growth.
Observation Mycorrhizal infection reached 55–71% of root tips.
Observation Fungal biomass accounted for less than 3% of plant dry matter.
Intervention effect Fungal biomass was significantly lower under nitrate than ammonium.
Intervention effect Mycorrhizal plants had higher CO2 assimilation than nonmycorrhizal plants under both N sources.
Intervention effect High light intensity increased CO2 assimilation.
Intervention effect Mycorrhizae significantly increased intact root respiration under ammonium.
Observation The respiratory quotient reached 49.3% at 30°C and low light.
Observation The respiratory quotient fell to 11.7% at 10°C and high light.
Intervention effect Under ammonium, the proportion of carbon lost to root respiration was significantly higher in mycorrhizal plants.
Intervention effect Dry matter production in mycorrhizal plants decreased 10.1%.
Intervention effect Under nitrate, mycorrhizal and nonmycorrhizal plants had no significant respiratory quotient difference.
Observation Fungal mycelium respiration accounted for 31.3% of total mycorrhizal root respiration with ammonium.
Observation Fungal mycelium respiration accounted for 8.3% of total mycorrhizal root respiration with nitrate.
Observation Fungal dry weight was 4% under ammonium.
Observation Fungal dry weight was 2.5% under nitrate.
Observation Calculated fungal respiration was 11.1 times root tissue respiration under ammonium.
Observation Calculated fungal respiration was 3.4 times root tissue respiration under nitrate.
Observation Carbohydrate concentrations did not consistently differ between mycorrhizal and nonmycorrhizal plants; increased root respiration was interpreted as the main cause of reduced growth, with extramatrical fungal biomass minor.

Associationobservedoriginal resultmeasured

Claim · model-written summary

Growth response to low IAA levels increased two- to threefold over the first three hours after excision.

Taxon: corn (Zea mays L.)Zea mayse1
Treatment: low levels of IAAe0
Outcome: magnitude of the growth responsee0
Direction: increasee0
Value: 2- to 3-folde0
Qualifier: first 3 hours foUowing excisione0

Verbatim

e0
“a 2- to 3-fold increase in the magnitude of the growth response to low levels of IAA and a 3-fold decrease in the latent period of the response during the first 3 hours foUowing excision.”
✓ located verbatim in the source · abstract, characters 449–636

t0
“Coleoptile”
✓ located verbatim in the source · title, characters 51–61

e1
“When segments are excised from corn (Zea mays L.) coleoptiles they exhibit a very low rate of elongation for about 3.5 hours.”
✓ located verbatim in the source · abstract, characters 0–125

Title

Time-dependent Changes in the Auxin Sensitivity of Coleoptile

Mary Jo Vesper; Michael L. Evans 1978

Other claims from this paper (9)

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Diatomite reduced zinc accumulation in sweet clover and medic by 2.5-2.8 fold.

Taxon: sweet clover and medice0
Treatment: diatomitee0
Outcome: zince0
Direction: decreasee0
Value: 2.5-2.8 folde0

Not reportedComparator

Verbatim

e0
“The use of diatomite in models of soils contaminated by high-density metals contributed to the decrease of accumulation in plants of sweet clover and medic of lead by 1.1-1.3 order of magnitude, of zinc 2.5-2.8 fold, and of cadmium 1.8-2.5 fold.”
✓ located verbatim in the source · abstract, characters 594–839

Title

The role of diatomite in the cultivation of legume grasses in modified black soil models

A O Oznobihina IOP Conference Series Materials Science and Engineering 2020. doi:10.1088/1757-899x/962/4/042024

Other claims from this paper (2)

Intervention effect Diatomite reduced lead accumulation in sweet clover and medic by 1.1-1.3 order of magnitude.
Intervention effect Diatomite reduced cadmium accumulation in sweet clover and medic by 1.8-2.5 fold.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Diatomite reduced cadmium accumulation in sweet clover and medic by 1.8-2.5 fold.

Taxon: sweet clover and medice0
Treatment: diatomitee0
Outcome: cadmiume0
Direction: decreasee0
Value: 1.8-2.5 folde0

Not reportedComparator

Verbatim

e0
“The use of diatomite in models of soils contaminated by high-density metals contributed to the decrease of accumulation in plants of sweet clover and medic of lead by 1.1-1.3 order of magnitude, of zinc 2.5-2.8 fold, and of cadmium 1.8-2.5 fold.”
✓ located verbatim in the source · abstract, characters 594–839

Title

The role of diatomite in the cultivation of legume grasses in modified black soil models

A O Oznobihina IOP Conference Series Materials Science and Engineering 2020. doi:10.1088/1757-899x/962/4/042024

Other claims from this paper (2)

Intervention effect Diatomite reduced lead accumulation in sweet clover and medic by 1.1-1.3 order of magnitude.
Intervention effect Diatomite reduced zinc accumulation in sweet clover and medic by 2.5-2.8 fold.

Observationobservedoriginal resultmeasured

Claim · model-written summary

G8 had greater salt-induced decreases in shoot length, leaf area and LAI than other genotypes.

Taxon: Brassica junceaL. Czern. & Coss.Brassica junceat0
Material: genotype G8e0
Outcome: SL plant−1, A leaf−1, LAIe0
Direction: decreasee0
Comparator: other genotypese0

Verbatim

e0
“the magnitude of increase in MDA and Na content and decrease in SL plant−1, A leaf−1, LAI, P N, gs, Chl content and NR and ATP-S activities in genotype G8 was more than that of other genotypes.”
✓ located verbatim in the source · abstract, characters 1303–1496

t0
“Brassica junceaL. Czern. & Coss.”
✓ located verbatim in the source · title, characters 56–88

Title

Morphological and physio-biochemical characterization ofBrassica junceaL. Czern. & Coss. genotypes under salt stress

Manzer H. Siddiqui; Firoz Mohammad; M. Nasir Khan Journal of Plant Interactions 2008. doi:10.1080/17429140802227992

Other claims from this paper (9)

Intervention effect NaCl decreased shoot length, leaf area and leaf area index at both stages.
Intervention effect Salt stress accumulated proline and glycinebetaine in all genotypes.
Observation The increases in Pro and GB were greater in G8 than in other genotypes.
Intervention effect Salt stress increased MDA and Na content in all genotypes.
Intervention effect Salt stress decreased chlorophyll, nitrogen and potassium content and K/Na ratio in all genotypes.
Intervention effect Salt stress decreased NR and ATP-S activities in all genotypes.
Observation G8 had greater salt-induced increases in MDA and Na than other genotypes.
Observation G8 had greater salt-induced decreases in photosynthesis, stomatal conductance and chlorophyll than other genotypes.
Observation G8 had greater salt-induced decreases in NR and ATP-S activities than other genotypes.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Transmittance changes positively correlated with xanthophyll deepoxidation.

Taxon: Tradescantia speciesTradescantiat0
Outcome: extent of xanthophyll deepoxidatione0

Verbatim

t0
“Tradescantia species”
✓ located verbatim in the source · title, characters 68–88

e0
“The magnitude of the irradiance-dependent transmittance changes positively correlated both with the rate of photosystem II recovery and with the extent of xanthophyll deepoxidation in the leaves.”
✓ located verbatim in the source · abstract, characters 1186–1381

Title

An exceptional irradiance-induced decrease of light trapping in two Tradescantia species: an unexpected relationship with the leaf architecture and zeaxanthin-mediated photoprotection

V. V. Ptushenko; O. S. Ptushenko; O. P. Samoilova; et al. Biologia Plantarum 2016. doi:10.1007/s10535-016-0593-7

Other claims from this paper (10)

Intervention effect High irradiance increased leaf thickness two to fourfold.
Observation Mesophyll thickness changed 1.8-fold in T. fluminensis.
Observation Mesophyll thickness changed 1.15-fold in T. sillamontana.
Observation Chloroplast size changed 0.8-fold in T. fluminensis.
Observation Chloroplast size did not change significantly in T. sillamontana.
Observation Mesophyll structure did not significantly facilitate chloroplast avoidance movement.
Observation Irradiance increased light transmittance two to fourfold.
Observation The transmittance increase exceeded that of other higher plants.
Observation Transmittance changes positively correlated with photosystem II recovery.
Observation The correlation opposed the negative cross-species correlation.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Emergence percentage fell as sowing depth increased, more strongly for smaller seeded grasses.

Taxon: all speciese0
Treatment: increased sowing depthe0
Outcome: emergence percentagee0
Direction: decreasede0
Qualifier: ·greater with smaller seeded grassese0

Not reportedComparator

Verbatim

e0
“For all species, emergence percentage decreased with increased sowing depth but the magnitude of this decrease was ·greater with smaller seeded grasses.”
✓ located verbatim in the source · abstract, characters 908–1060

Title

Effects of sowing depth and additional nitrogen on emergence and establishment of a range of New Zealand pasture grasses

D. R. Porter; R.J. Lucas; M. Andrews 1993

Other claims from this paper (8)

Intervention effect Additional nitrogen did not affect grass emergence or establishment percentages.
Association Grass emergence percentage correlated positively with mean seed weight at all depths.
Intervention effect Survival of emerged plants over winter generally rose with sowing depth.
Association Grass establishment percentage was positively correlated with mean seed weight across depths.
Intervention effect Establishment percentage generally fell as sowing depth increased.
Observation Species and depth effects on emergence at 10 and 30 mm were similar under controlled and field conditions.
Intervention effect Nitrate did not affect emergence at 10 mm depth.
Intervention effect Nitrate decreased emergence percentage by 15% at 30 mm depth.

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Higher light 2 intensity shortened the time for guard cell chloroplasts to attain the new ratio.

Taxon: Saxifraga cernuaSaxifraga cernuae7
Organ / stage: guard cell chloroplastse0
Treatment: increase in light 2 intensitye0
Outcome: time required to establish the new ratioe0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“An increase in light 2 intensity caused an increase in the magnitude of the F730/F695 ratio for both chloroplast types and, for guard cell chloroplasts, a decrease in the time required to establish the new ratio.”
✓ located verbatim in the source · abstract, characters 586–798

e7
“prepared from Saxifraga cernua”
✓ located verbatim in the source · abstract, characters 157–187

Title

The Kinetics of in Vivo State Transitions in Mesophyll and Guard Cell Chloroplasts Monitored by 77 K Fluorescence Emission Spectra

Bruce T. Mawson; W. Raymond Cummins PLANT PHYSIOLOGY 1986. doi:10.1104/pp.82.4.873

Other claims from this paper (5)

Intervention effect Light 2 raised two fluorescence ratios within minutes.
Observation Mesophyll chloroplasts established state 2 more rapidly than guard cell chloroplasts.
Intervention effect Higher light 2 intensity increased the F730/F695 ratio in both chloroplast types.
Intervention effect DCMU-treated mesophyll and epidermal tissues did not transition to state 2.
Intervention effect NaF-treated tissues reached state 2 but could not return to state 1.

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

The smallest rooting volume had lower overall matric potential than the largest volume.

Taxon: tomato plants ( Lycopersicon esculentum Mill. ‘Red Dwarf)Solanum lycopersicume0
Outcome: Ψ mse1
Direction: lowere1
Value: ‐30 kPae1
Qualifier: compared with‐12 kPae1
Comparator: largest RVe1

Verbatim

e0
“tomato plants ( Lycopersicon esculentum Mill. ‘Red Dwarf)”
✓ located verbatim in the source · abstract, characters 109–166

e1
“The root environment in the smallest RV had a 2‐fold decrease in Ψ ms to ‐14 kPa, a greater rate of decrease in Ψ ms and a lower overall Ψ ms magnitude of‐30 kPa (compared with‐12 kPa in the largest RV).”
✓ located verbatim in the source · abstract, characters 321–524

Title

Variations in water availability and temperature in the root environment during root volume restriction studies

M. B. Hurley; J. S. Rowarth; M. C. T. Trought; et al. New Zealand Journal of Crop and Horticultural Science 1998. doi:10.1080/01140671.1998.9514049

Other claims from this paper (7)

Association Media matric potential and temperature varied inversely with rooting volume.
Observation The smallest rooting volume showed a twofold fall in root-zone matric potential to −14 kPa.
Association The smallest volume had a greater rate of matric-potential decrease.
Observation The root environment had large daily temperature fluctuations of 12°C.
Association The smallest volume was 3°C warmer than the largest volume.
Intervention effect Modified hydroponics with frequent watering eliminated matric-potential differences among rooting volumes.
Intervention effect Modified hydroponics with frequent watering reduced media temperature differences among rooting volumes.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

ADP with arsenate decreased ΔpH by up to 0.4 unit.

Treatment: ADPe0
Outcome: ΔpHe0
Direction: decreasede0
Value: 0.4 unite0
Qualifier: In the presence of arsenatee0

Not reportedTaxonComparator

Verbatim

e0
“In the presence of arsenate, ΔpH was decreased by ADP up to 0.4 unit and this decrease was prevented by phlorizin, an energy transfer inhibitor.”
✓ located verbatim in the source · abstract, characters 532–676

Title

Effects of Adenine Nucleotides and of Photophosphorylation on H+ Uptake and the Magnitude of the H+ Gradient in Illuminated Chloroplasts

Archie R. Portis; Richard E. McCarty Journal of Biological Chemistry 1974. doi:10.1016/s0021-9258(19)42246-1

Other claims from this paper (5)

Intervention effect Saturating ADP with arsenate decreased steady-state H+ uptake in illuminated chloroplasts.
Intervention effect ATP or ADP without arsenate enhanced the light-induced chloroplast H+ gradient by 0.15 to 0.2 unit.
Intervention effect Phlorizin prevented the ADP-associated ΔpH decrease.
Association With reduced light intensity or added uncoupler, phosphorylation rates fell faster than ΔpH.
Association A 0.3 to 0.34 unit decrease in ΔpH accompanied a 10-fold decrease in phosphorylation rate.

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