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“decrease in relative water content”

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Organism: Hordeum vulgare ✕

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Under future combined conditions, anthesis drought reduced cell dehydration against current conditions.

Taxon: barleyHordeum vulgaret0
Treatment: anthesis drought and under future combined conditionse0
Outcome: cell dehydratione0
Direction: reducede0
Comparator: current conditionse0

Verbatim

e0
“At anthesis drought and under future combined conditions, plants showed a reduced cell dehydration and decrease in leaf relative water content compared with plants grown under current conditions.”
✓ located verbatim in the source · abstract, characters 1172–1367

t0
“barley”
✓ located verbatim in the source · title, characters 49–55

Title

Climate change does not impact the water flow of barley at the vegetative stage, ameliorates at anthesis and worsens after subsequent drought episodes

Ander Yoldi-Achalandabaso; Wieland Fricke; Jon Miranda-Apodaca; et al. Plant Physiology and Biochemistry 2024. doi:10.1016/j.plaphy.2024.109060

Other claims from this paper (10)

Intervention effect Vegetative drought did not affect barley water status across environmental conditions.
Intervention effect At anthesis, elevated CO2 and temperature maintained better water status than current conditions.
Intervention effect Elevated CO2 and temperature reduced stomatal conductance.
Intervention effect Elevated CO2 and temperature slowed plant water flow.
Mechanism Leaf HvPIP2;1 and HvTIP1 ; 1 were interpreted as key regulators of barley water flow.
Mechanism Leaf and root HvPIP2;5 was interpreted as providing basic water flow.
Intervention effect Under future combined conditions, anthesis drought decreased leaf relative water content against current conditions.
Intervention effect Prior drought did not prime barley water status for a later drought.
Intervention effect Prior drought worsened the later drought response under future conditions.
Mechanism The worsened response was attributed to root-shoot developmental imbalance.

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Two-week irrigation reduced total chlorophyll by 22.63% and 19.98%.

Taxon: barleyHordeum vulgaret0
Treatment: Irrigation every two weekse0
Outcome: total chlorophylle0
Direction: reducede0
Value: 22.63 and 19.98%e0
Comparator: one weeke0

Verbatim

e0
“Irrigation every two weeks instead of one week reduced significantly all growth attributes. The relative decrease percentages were 25.41 and 22.93%, 22.63 and 19.98%, and 25.11 and 26.19% for flag leaf blade area, total chlorophyll and relative water content in both seasons, respectively.”
✓ located verbatim in the source · abstract, characters 464–753

t0
“BARLEY (HORDEUM VULGARE L.)”
✓ located verbatim in the source · title, characters 71–98

Title

INFLUENCE OF GLYCINEBETAINE AND NITROGEN LEVELS ON GROWTH AND YIELD OF BARLEY (HORDEUM VULGARE L.) UNDER DROUGHT CONDITIONS

Maher Kotb; El Sayed Gaballah Journal of Productivity and Development 2007. doi:10.21608/jpd.2007.44939

Other claims from this paper (19)

Intervention effect Two-week irrigation reduced flag leaf blade area by 25.41% and 22.93% in the two seasons.
Intervention effect Two-week irrigation reduced relative water content by 25.11% and 26.19%.
Intervention effect 85 kg N/fad increased flag leaf blade area by 12.80 and 13.63% compared with 45 kg N/fad.
Intervention effect 85 kg N/fad increased total chlorophyll by 1.88 and 3.50% compared with 45 kg N/fad.
Intervention effect 85 kg N/fad increased relative water content by 3.28 and 4.59% compared with 45 kg N/fad.
Intervention effect 12 mM glycinebetaine increased flag leaf blade area by 20.63 and 23.06% compared with untreated plants.
Intervention effect 12 mM glycinebetaine increased total chlorophyll by 32.30 and 35.80% compared with untreated plants.
Intervention effect 12 mM glycinebetaine increased relative water content by 22.57 and 30.40% compared with untreated plants.
Intervention effect Increasing nitrogen without glycinebetaine did not increase total chlorophyll under either water condition.
Intervention effect Increasing glycinebetaine significantly increased total chlorophyll.
Intervention effect Extending irrigation from 7 to 14 days reduced grain yield by 22.73 and 26.02%.
Intervention effect Extending irrigation from 7 to 14 days reduced straw yield by 26.73 and 24.79%.
Intervention effect Increasing nitrogen from 45 to 85 kg N/fad increased grain yield by 12.84 and 12.78%.
Intervention effect Increasing nitrogen from 45 to 85 kg N/fad increased straw yield by 16.43 and 14.7%.
Intervention effect Increasing nitrogen from 45 to 85 kg N/fad increased mean productivity by 12.88 and 12.85%.
Intervention effect Application of 12mM GB/fad increased grain yield by 21.27 and 24.77% compared with zero GB.
Intervention effect Application of 12mM GB/fad increased straw yield by 24.82 and 26.83% compared with zero GB.
Intervention effect Application of 12mM GB/fad increased mean productivity by 21.30 and 24.73% compared with zero GB.
Intervention effect The 8mM GB and 85 kg nitrogen combination yielded more than zero GB and 45 kg nitrogen under frequent irrigation and drought.

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Two-week irrigation reduced flag leaf blade area by 25.41% and 22.93% in the two seasons.

Taxon: barleyHordeum vulgaret0
Treatment: Irrigation every two weekse0
Outcome: flag leaf blade areae0
Direction: reducede0
Value: 25.41 and 22.93%e0
Comparator: one weeke0

Verbatim

e0
“Irrigation every two weeks instead of one week reduced significantly all growth attributes. The relative decrease percentages were 25.41 and 22.93%, 22.63 and 19.98%, and 25.11 and 26.19% for flag leaf blade area, total chlorophyll and relative water content in both seasons, respectively.”
✓ located verbatim in the source · abstract, characters 464–753

t0
“BARLEY (HORDEUM VULGARE L.)”
✓ located verbatim in the source · title, characters 71–98

Title

INFLUENCE OF GLYCINEBETAINE AND NITROGEN LEVELS ON GROWTH AND YIELD OF BARLEY (HORDEUM VULGARE L.) UNDER DROUGHT CONDITIONS

Maher Kotb; El Sayed Gaballah Journal of Productivity and Development 2007. doi:10.21608/jpd.2007.44939

Other claims from this paper (19)

Intervention effect Two-week irrigation reduced total chlorophyll by 22.63% and 19.98%.
Intervention effect Two-week irrigation reduced relative water content by 25.11% and 26.19%.
Intervention effect 85 kg N/fad increased flag leaf blade area by 12.80 and 13.63% compared with 45 kg N/fad.
Intervention effect 85 kg N/fad increased total chlorophyll by 1.88 and 3.50% compared with 45 kg N/fad.
Intervention effect 85 kg N/fad increased relative water content by 3.28 and 4.59% compared with 45 kg N/fad.
Intervention effect 12 mM glycinebetaine increased flag leaf blade area by 20.63 and 23.06% compared with untreated plants.
Intervention effect 12 mM glycinebetaine increased total chlorophyll by 32.30 and 35.80% compared with untreated plants.
Intervention effect 12 mM glycinebetaine increased relative water content by 22.57 and 30.40% compared with untreated plants.
Intervention effect Increasing nitrogen without glycinebetaine did not increase total chlorophyll under either water condition.
Intervention effect Increasing glycinebetaine significantly increased total chlorophyll.
Intervention effect Extending irrigation from 7 to 14 days reduced grain yield by 22.73 and 26.02%.
Intervention effect Extending irrigation from 7 to 14 days reduced straw yield by 26.73 and 24.79%.
Intervention effect Increasing nitrogen from 45 to 85 kg N/fad increased grain yield by 12.84 and 12.78%.
Intervention effect Increasing nitrogen from 45 to 85 kg N/fad increased straw yield by 16.43 and 14.7%.
Intervention effect Increasing nitrogen from 45 to 85 kg N/fad increased mean productivity by 12.88 and 12.85%.
Intervention effect Application of 12mM GB/fad increased grain yield by 21.27 and 24.77% compared with zero GB.
Intervention effect Application of 12mM GB/fad increased straw yield by 24.82 and 26.83% compared with zero GB.
Intervention effect Application of 12mM GB/fad increased mean productivity by 21.30 and 24.73% compared with zero GB.
Intervention effect The 8mM GB and 85 kg nitrogen combination yielded more than zero GB and 45 kg nitrogen under frequent irrigation and drought.

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Drought decreased carotenoids by 6.2% to 70.9% in barley.

Taxon: Hordeum vulgareHordeum vulgaree2
Treatment: Droughte0
Outcome: carotenoidse5
Direction: decreaseinferrede5
Value: –6.2% to –70.9%e5
Comparator: optimale1

Verbatim

e2
“limiting barley (Hordeum vulgare L.) productivity”
✓ located verbatim in the source · abstract, characters 34–83

e0
“Drought reduced relative water content (–1.3% to –3.2%), plant height (–14.7% to –29.6%), and dry biomass (–2.3% to –24.9%)”
✓ located verbatim in the source · abstract, characters 299–422

e1
“under controlled laboratory conditions with optimal and drought treatments”
✓ located verbatim in the source · abstract, characters 161–235

e5
“pigment loss (chlorophyll a –10.1% to –79.5%; carotenoids –6.2% to –70.9%)”
✓ located verbatim in the source · abstract, characters 489–563

Title

Genotypic variation in physiological, biochemical, and transcriptional responses to drought stress in spring barley at an early growth stage

Šarlota Kaňuková; Marcela Gubišová; Martina Hudcovicová; et al. Plant Soil and Environment 2025. doi:10.17221/406/2025-pse

Other claims from this paper (17)

Intervention effect Drought reduced relative water content by 1.3% to 3.2% in barley.
Intervention effect Drought reduced plant height by 14.7% to 29.6% in barley.
Intervention effect Drought reduced dry biomass by 2.3% to 24.9% in barley.
Intervention effect Drought strongly increased proline accumulation by 23.6% to 454% in barley.
Intervention effect Drought decreased chlorophyll a by 10.1% to 79.5% in barley.
Observation Plant height and chlorophyll a were the most reliable discriminators of barley genotype tolerance.
Observation Relative water content was less predictive of the species than the other traits.
Observation Multivariate stratification separated barley genotypes into tolerant, intermediate and sensitive groups.
Observation HvABF2 gene expression was induced 1.77-fold under drought.
Observation HvSOD1 was moderately upregulated 1.82-fold.
Observation HvAPX1 was upregulated 2.28-fold.
Observation HvP5CS had the strongest response (3.29-fold).
Observation HvP5CS induction did not consistently correlate with tolerance.
Mechanism Sensitive genotypes suffered severe pigment and growth penalties from excessive proline accumulation.
Observation Tolerant genotypes combined growth stability, pigment retention and moderate osmotic adjustment.
Mechanism Drought tolerance in barley at the early growth stage emerged from coordinated regulation of growth, photoprotection and stress-gene activation.
Recommendation The early-stage genotype selection can guide validation under field conditions and breeding.

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Drought decreased chlorophyll a by 10.1% to 79.5% in barley.

Taxon: Hordeum vulgareHordeum vulgaree2
Treatment: Droughte0
Outcome: chlorophyll ae5
Direction: decreaseinferrede5
Value: –10.1% to –79.5%e5
Comparator: optimale1

Verbatim

e2
“limiting barley (Hordeum vulgare L.) productivity”
✓ located verbatim in the source · abstract, characters 34–83

e0
“Drought reduced relative water content (–1.3% to –3.2%), plant height (–14.7% to –29.6%), and dry biomass (–2.3% to –24.9%)”
✓ located verbatim in the source · abstract, characters 299–422

e1
“under controlled laboratory conditions with optimal and drought treatments”
✓ located verbatim in the source · abstract, characters 161–235

e5
“pigment loss (chlorophyll a –10.1% to –79.5%; carotenoids –6.2% to –70.9%)”
✓ located verbatim in the source · abstract, characters 489–563

Title

Genotypic variation in physiological, biochemical, and transcriptional responses to drought stress in spring barley at an early growth stage

Šarlota Kaňuková; Marcela Gubišová; Martina Hudcovicová; et al. Plant Soil and Environment 2025. doi:10.17221/406/2025-pse

Other claims from this paper (17)

Intervention effect Drought reduced relative water content by 1.3% to 3.2% in barley.
Intervention effect Drought reduced plant height by 14.7% to 29.6% in barley.
Intervention effect Drought reduced dry biomass by 2.3% to 24.9% in barley.
Intervention effect Drought strongly increased proline accumulation by 23.6% to 454% in barley.
Intervention effect Drought decreased carotenoids by 6.2% to 70.9% in barley.
Observation Plant height and chlorophyll a were the most reliable discriminators of barley genotype tolerance.
Observation Relative water content was less predictive of the species than the other traits.
Observation Multivariate stratification separated barley genotypes into tolerant, intermediate and sensitive groups.
Observation HvABF2 gene expression was induced 1.77-fold under drought.
Observation HvSOD1 was moderately upregulated 1.82-fold.
Observation HvAPX1 was upregulated 2.28-fold.
Observation HvP5CS had the strongest response (3.29-fold).
Observation HvP5CS induction did not consistently correlate with tolerance.
Mechanism Sensitive genotypes suffered severe pigment and growth penalties from excessive proline accumulation.
Observation Tolerant genotypes combined growth stability, pigment retention and moderate osmotic adjustment.
Mechanism Drought tolerance in barley at the early growth stage emerged from coordinated regulation of growth, photoprotection and stress-gene activation.
Recommendation The early-stage genotype selection can guide validation under field conditions and breeding.

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