Search claims · PlantClaims

Observationobservedoriginal resultno effectmeasured

Claim · model-written summary

In dark-grown barley the enhanced isozyme was unaffected despite a 75% decrease in total catalase activity.

Taxon: barleyHordeum vulgaree0
Treatment: dark-growne0
Outcome: this isozymee0
Direction: unaffectede0
Qualifier: 75% decrease in total catalase activitye0

Verbatim

e0
“Similarly, this isozyme is unaffected in dark-grown barley in spite of a 75% decrease in total catalase activity.”
✓ located verbatim in the source · abstract, characters 689–802

Title

Enhanced-Peroxidatic Activity in Specific Catalase Isozymes of Tobacco, Barley, and Maize

Evelyn A. Havir; Neil A. McHale PLANT PHYSIOLOGY 1989. doi:10.1104/pp.91.3.812

Other claims from this paper (7)

Associationauthor interpretationoriginal resultno effectmeasured

Claim · model-written summary

No clear evidence showed a decrease in diversity attributable to the domestication of barley.

Taxon: barleyHordeum vulgaret0
Treatment: domestication of barleye0
Outcome: diversitye0
Direction: decreasee0
Qualifier: no clear evidencee0

Verbatim

e0
“no clear evidence for decrease in diversity attributable to the domestication of barley”
✓ located verbatim in the source · abstract, characters 994–1081

t0
“Comparative assessment of genetic diversity in wild and primitive cultivated barley in a center of diversity.”
✓ located verbatim in the source · title, characters 0–109

Title

Comparative assessment of genetic diversity in wild and primitive cultivated barley in a center of diversity.

S Jana; L N Pietrzak Genetics 1988. doi:10.1093/genetics/119.4.981

Other claims from this paper (6)

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Verapamil and nifedipine did not inhibit the ABA-induced calcium decrease.

Taxon: barleyHordeum vulgaree0
Treatment: verapamil and nifedipinee1
Outcome: ABA-induced Cai decreasee2
Direction: no inhibitione1

Not reportedComparator

Verbatim

e0
“barley aleurone protoplasts”
✓ located verbatim in the source · abstract, characters 42–69

e1
“while the Ca2+ channel blockers verapamil and nifedipine give no inhibition.”
✓ located verbatim in the source · abstract, characters 477–553

e2
“The Ca2+ antagonists La3+ and Cd2+ inhibit the ABA-induced Cai decrease in a dose-dependent manner, while the Ca2+ channel blockers verapamil and nifedipine give no inhibition.”
✓ located verbatim in the source · abstract, characters 377–553

Title

Abscisic acid induces a cytosolic calcium decrease in barley aleurone protoplasts

M Wang; B Van Duijn; A W Schram FEBS Letters 1991. doi:10.1016/0014-5793(91)80086-i

Other claims from this paper (5)

Observation Basal cytosolic calcium in barley aleurone protoplasts was about 200 nM.
Intervention effect ABA lowered cytosolic calcium dose-dependently to about 50 nM.
Observation The ABA-induced calcium decrease occurred within 5 s.
Intervention effect La3+ and Cd2+ inhibited the ABA-induced cytosolic calcium decrease dose-dependently.
Mechanism The authors interpret the calcium decline as consistent with ABA activation of plasma membrane Ca2(+)-ATPase.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Water stress did not cause a marked decrease in the total RNA level of barley aleurone cells.

Taxon: barleyHordeum vulgaree0
Treatment: Water stresse5
Outcome: total RNA levele5
Direction: marked decreasee5

Not reportedComparator

Verbatim

e0
“Water stress inhibits the gibberellic acid (GA(3))-induced synthesis of alpha-amylase in aleurone layers of barley (Hordeum vulgare L.)”
✓ located verbatim in the source · abstract, characters 0–135

e5
“Water stress does not cause a marked decrease in the total RNA level of aleurone cells”
✓ located verbatim in the source · abstract, characters 741–827

Title

OSMOTIC REGULATION OF α-AMYLASE SYNTHESIS AND POLYRIBOSOME FORMATION IN ALEURONE CELLS OF BARLEY

Judith E. Armstrong; Russell L. Jones The Journal of Cell Biology 1973. doi:10.1083/jcb.59.2.444

Other claims from this paper (6)

Intervention effect Water stress inhibited the GA3-induced synthesis of alpha-amylase in barley aleurone layers.
Intervention effect Water stress induced by 0.6 M PEG reduced the binding of ribosomes to the endoplasmic reticulum in barley aleurone cells.
Intervention effect Water stress reduced polyribosome formation in barley aleurone cells.
Intervention effect Osmoticum had little effect on the ability of ribosomes to incorporate puromycin into nascent protein.
Intervention effect Water stress reduced total RNA in postmitochondrial supernatant fractions by 8-9% relative to the control.
Intervention effect Membrane synthesis was depressed by 15% in barley aleurone cells stressed with 0.6 M PEG for 2.5 hours.

Observationobservedoriginal resultno effectmeasured

Claim · model-written summary

The reduction of photosystem I activity by spermine was not due to a decrease in photosynthetic unit size.

Taxon: barleyHordeum vulgaree0
Outcome: photosynthetic unit sizee4
Qualifier: This reduction, however, was not due to a decreasee4

Verbatim

e0
“chloroplasts from barley leaf discs”
✓ located verbatim in the source · abstract, characters 80–115

e3
“Photosystem I activity was reduced by about 90% within the first 24 hours in the spermine-treated samples”
✓ located verbatim in the source · abstract, characters 501–606

e4
“This reduction, however, was not due to a decrease in the photosynthetic unit size”
✓ located verbatim in the source · abstract, characters 608–690

Title

Stabilization of Thylakoid Membranes by Spermine during Stress-induced Senescence of Barley Leaf Discs

Radovan B. Popovic; David J. Kyle; Abe S. Cohen; et al. PLANT PHYSIOLOGY 1979. doi:10.1104/pp.64.5.721

Other claims from this paper (7)

Intervention effect Spermine-treated chloroplast membranes showed no photosystem II activity with water as electron donor.
Intervention effect Diphenylcarbazide-stimulated photoreduction of dichloroindophenol was 3-fold greater in barley leaf discs incubated in spermine than in water.
Intervention effect Spermine reduced photosystem I activity by about 90% within the first 24 hours.
Observation During senescence in water, polypeptides other than those of photosystem II were preferentially lost.
Intervention effect Spermine reduced the loss of polypeptides during senescence.
Intervention effect Spermine prevented the appearance of several additional chlorophyll proteins that appeared in controls during senescence.
Mechanism Spermine stabilizes membrane function during senescence through its interaction with thylakoid membranes.

Associationobservedoriginal resultno effectmeasured

Claim · model-written summary

Higher cuticular wax coverage did not decrease foliar water loss.

Taxon: maize and barleyHordeum vulgare Zea mayse1
Outcome: rates of foliar water losse0
Direction: did not decreasee0
Comparator: increased wax coveragese0

Verbatim

e0
“Despite the increased wax coverages, rates of foliar water loss did not decrease”
✓ located verbatim in the source · abstract, characters 1193–1273

e1
“monocotyledonous (maize and barley) and dicotyledonous (tomato and bean) crop species”
✓ located verbatim in the source · abstract, characters 1057–1142

Title

In a Different Light: Irradiation‐Induced Cuticular Wax Accumulation Fails to Reduce Cuticular Transpiration

Lena Herzig; Kora Uellendahl; Yaron Malkowsky; et al. Plant Cell & Environment 2025. doi:10.1111/pce.15376

Other claims from this paper (5)

Intervention effect Increasing PPFD significantly increased cuticular wax amount in maize and barley.
Intervention effect Increasing PPFD significantly increased cuticular wax amount in tomato and bean.
Intervention effect Increasing PPFD did not alter relative lipid composition in maize and barley.
Intervention effect Increasing PPFD did not alter relative lipid composition in tomato and bean.
Association Residual cuticular transpiration was interpreted as independent of cuticular wax amount.

Observationobservedoriginal resultno effectmeasured

Claim · model-written summary

A subsequent dark-period decrease offset daytime gains, leaving no net 24-hour leaf growth effect in saline and drying soil.

Taxon: maize and barleyHordeum vulgare Zea mayse2
Outcome: leaf growth over a 24 h periode0
Direction: no net effecte0
Qualifier: during the darke0

Verbatim

e0
“a subsequent decrease during the dark results in no net effect on leaf growth over a 24 h period”
✓ located verbatim in the source · abstract, characters 1190–1286

e1
“In both saline and drying soil, pressurization does raise the growth rate during the light period”
✓ located verbatim in the source · abstract, characters 1087–1184

e2
“water-stressed maize and barley”
✓ located verbatim in the source · abstract, characters 76–107

Title

Water relations and leaf expansion: importance of time scale

Rana Munns; John B. Passioura; Jianmin Guo; et al. Journal of Experimental Botany 2000. doi:10.1093/jexbot/51.350.1495

Other claims from this paper (9)

Association Sudden changes in humidity, light and salinity greatly but often transiently affected leaf elongation.
Intervention effect Sufficiently large salinity changes persistently reduced leaf elongation.
Intervention effect Maintaining full turgor by root pressurization eliminated transient and persistent leaf elongation changes after sudden environmental shifts.
Intervention effect Over days, pressurization failed to sustain high leaf elongation in saline soil.
Intervention effect Over days, pressurization failed to sustain high leaf elongation in drying soil.
Intervention effect In saline and drying soil, pressurization increased daytime growth rate.
Intervention effect Under very high transpirational demand, pressurization increased net 24-hour leaf growth.
Mechanism The authors infer that rapid leaf elongation responses to water stress arise from water relations rather than root signals.
Mechanism The authors infer that root signals override water-relation effects over days.

Observationobservedoriginal resultno effectmeasured

Claim · model-written summary

Field PS2 efficiency did not decrease after dark adaptation, even at high salinity.

Taxon: barley (Hordeum vulgare L.)Hordeum vulgaree1
Outcome: photosystem 2 (PS2) efficiencye0
Direction: was not founde0
Setting: fielde0

Verbatim

e0
“A decrease in photosystem 2 (PS2) efficiency was not found in the field after dark adaptation even at high salinity”
✓ located verbatim in the source · abstract, characters 458–573

e1
“barley (Hordeum vulgare L.)”
✓ located verbatim in the source · abstract, characters 36–63

Title

Effects of Salinity on Chlorophyll Fluorescence and Photosynthesis of Barley (Hordeum Vulgare L.) Grown Under a Triple-Line-Source Sprinkler System in the Field

R. Belkhodja; F. Morales; A. Abadía; et al. Photosynthetica 1999. doi:10.1023/a:1007019918225

Other claims from this paper (9)

Observation Net carbon dioxide assimilation and stomatal conductance decreased in salinity-exposed barley.
Association These gas exchange changes related to salinity tolerance at moderate salinity.
Observation At increasing salinity, PN saturated at low irradiance.
Observation Stomatal frequencies increased with increasing salinity.
Observation Salinity induced only small decreases in actual PS2 efficiency at midday.
Observation Photosynthetic electron transport was little affected by salinity.
Intervention effect Excised leaves from high salinity plots had lower variable to maximum fluorescence ratio than controls.
Recommendation PS2 efficiency in attached field leaves is probably not useful for screening salinity tolerance.
Recommendation PN rate might discriminate tolerant from non-tolerant cultivars.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Dry root weight did not decrease in Tarm-92 after seven days of boron stress.

Taxon: barleyHordeum vulgaret0
Material: Tarm-92e1
Treatment: 7 days of B stresse1
Outcome: dry root weighte1
Direction: such a decrease was not observede1

Not reportedComparator

Verbatim

e1
“While the dry root weight of B?lb?l-89 was reduced after 7 days of B stress (p < 0.05), such a decrease was not observed in Tarm-92.”
✓ located verbatim in the source · abstract, characters 928–1060

t0
“Boron toxicity tolerance in barley may be related to intrinsically higher levels of reactive oxygen species in the shoots”
✓ located verbatim in the source · title, characters 0–121

Title

Boron toxicity tolerance in barley may be related to intrinsically higher levels of reactive oxygen species in the shoots

Şükrü Çatav; Eda Çetin; Emre Vural; et al. Botanica Serbica 2023. doi:10.2298/botserb2301113c

Other claims from this paper (8)

Intervention effect Boron treatment significantly raised barley boron concentration at both exposure times.
Observation Sensitive and tolerant barley had no drastic root or shoot boron concentration difference.
Intervention effect Seven days of boron stress reduced dry root weight of sensitive B?lb?l-89 barley.
Intervention effect Excess boron increased H2O2, MDA, proline, sugar, and anthocyanin contents in both barley cultivars during at least one period.
Observation Tarm-92 had greater H2O2 than B?lb?l-89 under control and boron stress.
Observation The cultivars did not differ in MDA content.
Observation The cultivars did not differ in radical scavenging capacity.
Intervention effect Four days of boron stress increased Tarm-92 seedling flavonoids by 35%.

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

The growth regulator treatments did not significantly decrease dry weight per stem.

Taxon: winter barleyHordeum vulgaree0
Treatment: mepiquat chloride and ethephone6
Outcome: dry weight/steme5
Direction: did not decrease significantlye5

Not reportedComparator

Verbatim

e0
“six cultivars of winter barley grown in Belfast, UK, in 1986/87”
✓ located verbatim in the source · abstract, characters 203–266

e5
“The growth regulator treatments reduced plant height and although dry weight/stem did not decrease significantly, dry weight/unit length of stem was similar in treated and untreated plots”
✓ located verbatim in the source · abstract, characters 939–1126

e6
“Applications of nitrogen and a plant growth regulator (mepiquat chloride and ethephon) were used to manipulate stem structure”
✓ located verbatim in the source · abstract, characters 8–133

Title

Response of winter barley cultivars to nitrogen and a plant growth regulator in relation to lodging

E. M. White The Journal of Agricultural Science 1991. doi:10.1017/s0021859600077583

Other claims from this paper (11)

Observation Pipkin had a very high lodging damage susceptibility index (70), while the other cultivars ranged from 1 to 18.
Association Differences between cultivars in number of internodes, plant height and stem weight did not explain their differences in resistance to damage.
Observation Panda had dry weight per unit length of 2·35 mg/mm, among the strongest cultivars.
Observation Jennifer had dry weight per unit length of 2·34 mg/mm, among the strongest cultivars.
Observation Pipkin had dry weight per unit length of 1·75 mg/mm, the lowest among the cultivars.
Intervention effect Nitrogen application increased plant height.
Intervention effect Nitrogen application did not affect dry weight per main stem.
Intervention effect Nitrogen application decreased dry weight per unit length of stem.
Intervention effect The growth regulator treatments reduced plant height.
Intervention effect Dry weight per unit length of stem was similar in growth-regulator-treated and untreated plots.
Recommendation Dry weight per unit length has potential as an objective indicator of straw strength and could be used in cultivar evaluation in the absence of damage in field trials.

“decrease in A”

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