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“decrease in relative water content”

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Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

W-1 reduced conductance rapidly under high humidity when soil water declined, without leaf water change

Taxon: sunflowerHelianthus annuuse1
Material: W-1e0
Treatment: water was withheld under high relative humiditye0
Outcome: conductancee0
Direction: decreaseinferrede0
Qualifier: in the absence of any change in leaf water statuse0

Not reportedComparator

Verbatim

e0
“In another experiment in which water was withheld under high relative humidity, when soil water content started to decrease W-1 rapidly closed stomata in the absence of any change in leaf water status and the reduction in conductance was paralleled by a rise in xylem sap ABA concentration”
✓ located verbatim in the source · abstract, characters 843–1132

e1
“The response of w-1, a wilty sunflower (Helianthus annuus L.) mutant, to water stress is described in comparison with the control line (W-1)”
✓ located verbatim in the source · abstract, characters 0–140

Title

Characterization of a wilty sunflower (Helianthus annuusL.) mutant II. Water relations, stomatal conductance, abscisic acid content in leaves and xylem sap of plants subjected to water deficiency

Marco Fambrini; Claudio Pugliesi; Paolo Vernieri; et al. Journal of Experimental Botany 1994. doi:10.1093/jxb/45.12.1809

Other claims from this paper (12)

Intervention effect The w-1 mutant leaves showed no significant change in leaf conductance during detached-leaf dehydration
Intervention effect Detached w-1 leaves dehydrated strongly during the first 30 min
Intervention effect W-1 reduced stomatal aperture rapidly in response to water loss
Intervention effect ABA increased slightly in w-1 leaves after 2 h of stress
Intervention effect ABA increased 20-fold in W-1 leaves after 2 h of stress
Intervention effect Potted w-1 plants dehydrated quickly and lost turgor under water withholding
Intervention effect W-1 maintained positive turgor for a longer period under water withholding
Intervention effect Wild-type plants accumulated ABA in response to small changes in leaf water potential
Intervention effect The mutant changed ABA content and stomatal conductance only at very low water potentials
Association Conductance reduction in W-1 was paralleled by a rise in xylem sap ABA concentration
Intervention effect The mutant accumulated ABA in xylem sap only when soil and leaf water potential were dramatically reduced
Mechanism Low endogenous ABA and slow ABA synthesis appear to explain the high sensitivity of w-1 to water stress

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

aspirin decrease salt stress-induced injuries of plasma membrane in salt-stressed wheat seedlings.

Taxon: wheat (Triticum aestivum L.)Triticum aestivumt0
Treatment: aspirine0
Outcome: salt stress-induced injuries of plasma membranee0
Direction: decreasee0
Qualifier: salt stress-inducede0

Not reportedComparator

Verbatim

e0
“The results showed that, salicylic acid and aspirin can relatively increased the leaf relative water content, decrease the leaf relative electronic conductivity and salt stress-induced injuries of plasma membrane, promote the activity of membrane protective enzymes such as superoxide dismutase (SOD) and peroxidase (POD), and delay the accumulation of malon dialdehyde (MDA).”
✓ located verbatim in the source · abstract, characters 0–376

t0
“wheat (Triticum aestivum L.)”
✓ located verbatim in the source · title, characters 84–112

Title

Mitigative effects of salicylic acid and aspirin on salt stress-induced injuries in wheat (Triticum aestivum L.) during the stage of seedling growth

Zhang Shigong; Gao Jiyin; Song Jingzhi; et al. Xibei zhiwu xuebao 1998

Other claims from this paper (9)

Intervention effect salicylic acid increased leaf relative water content in salt-stressed wheat seedlings.
Intervention effect salicylic acid decrease leaf relative electronic conductivity in salt-stressed wheat seedlings.
Intervention effect salicylic acid decrease salt stress-induced injuries of plasma membrane in salt-stressed wheat seedlings.
Intervention effect salicylic acid promote activity of membrane protective enzymes such as superoxide dismutase (SOD) and peroxidase (POD) in salt-stressed wheat seedlings.
Intervention effect salicylic acid delay accumulation of malon dialdehyde (MDA) in salt-stressed wheat seedlings.
Intervention effect aspirin increased leaf relative water content in salt-stressed wheat seedlings.
Intervention effect aspirin decrease leaf relative electronic conductivity in salt-stressed wheat seedlings.
Intervention effect aspirin promote activity of membrane protective enzymes such as superoxide dismutase (SOD) and peroxidase (POD) in salt-stressed wheat seedlings.
Intervention effect aspirin delay accumulation of malon dialdehyde (MDA) in salt-stressed wheat seedlings.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Leaf water potential declined drastically from -0.2 to -1.0 MPa in water-stressed potato leaves.

Taxon: potatoSolanum tuberosumt0
Treatment: water stresst0
Outcome: leaf water potential (Ψw)e0
Direction: drastic declinee0
Value: -0.2 to -1.0 MPae0

Not reportedComparator

Verbatim

t0
“potato leaves induced by water stress”
✓ located verbatim in the source · title, characters 67–104

e0
“A slight decrease in relative water content (RWC) was accompanied by a drastic decline in leaf water potential (Ψw) from -0.2 to -1.0 MPa”
✓ located verbatim in the source · abstract, characters 367–504

Title

Changes in net photosynthetic rate and chlorophyll fluorescence in potato leaves induced by water stress

P.S. Basu; Ashoo Sharma; N.P. Sukumaran Photosynthetica 1998. doi:10.1023/a:1006801311105

Other claims from this paper (7)

Intervention effect Net photosynthetic rate (PN) at saturating irradiance decreased significantly in water-stressed potato plants.
Intervention effect Fv/Fm, relative electron transport rate and photochemical quenching declined in parallel at high irradiance under water stress.
Intervention effect Relative water content decreased slightly in water-stressed potato leaves.
Intervention effect Dehydrated potato leaves showed an increase in total soluble sugars per unit leaf area.
Mechanism The authors state that the accumulated soluble sugars inhibited photosynthesis in a feedback manner.
Intervention effect After rewatering, PN and Fv/Fm were restored to control values within 24 h.
Association After rewatering, the restoration was accompanied by a proportionate lowering of total soluble sugar content in the leaves.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

salicylic acid decrease salt stress-induced injuries of plasma membrane in salt-stressed wheat seedlings.

Taxon: wheat (Triticum aestivum L.)Triticum aestivumt0
Treatment: salicylic acide0
Outcome: salt stress-induced injuries of plasma membranee0
Direction: decreasee0
Qualifier: salt stress-inducede0

Not reportedComparator

Verbatim

e0
“The results showed that, salicylic acid and aspirin can relatively increased the leaf relative water content, decrease the leaf relative electronic conductivity and salt stress-induced injuries of plasma membrane, promote the activity of membrane protective enzymes such as superoxide dismutase (SOD) and peroxidase (POD), and delay the accumulation of malon dialdehyde (MDA).”
✓ located verbatim in the source · abstract, characters 0–376

t0
“wheat (Triticum aestivum L.)”
✓ located verbatim in the source · title, characters 84–112

Title

Mitigative effects of salicylic acid and aspirin on salt stress-induced injuries in wheat (Triticum aestivum L.) during the stage of seedling growth

Zhang Shigong; Gao Jiyin; Song Jingzhi; et al. Xibei zhiwu xuebao 1998

Other claims from this paper (9)

Intervention effect salicylic acid increased leaf relative water content in salt-stressed wheat seedlings.
Intervention effect salicylic acid decrease leaf relative electronic conductivity in salt-stressed wheat seedlings.
Intervention effect salicylic acid promote activity of membrane protective enzymes such as superoxide dismutase (SOD) and peroxidase (POD) in salt-stressed wheat seedlings.
Intervention effect salicylic acid delay accumulation of malon dialdehyde (MDA) in salt-stressed wheat seedlings.
Intervention effect aspirin increased leaf relative water content in salt-stressed wheat seedlings.
Intervention effect aspirin decrease leaf relative electronic conductivity in salt-stressed wheat seedlings.
Intervention effect aspirin decrease salt stress-induced injuries of plasma membrane in salt-stressed wheat seedlings.
Intervention effect aspirin promote activity of membrane protective enzymes such as superoxide dismutase (SOD) and peroxidase (POD) in salt-stressed wheat seedlings.
Intervention effect aspirin delay accumulation of malon dialdehyde (MDA) in salt-stressed wheat seedlings.

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Water loss differed by a factor of two to three across humidity conditions.

Taxon: MaizeZea mayse1
Treatment: >95% relative humiditye1
Outcome: amount of water loste0
Direction: differede0
Value: factor 2 to 3e0
Comparator: 50–60%e1

Verbatim

e0
“the amount of water lost by the plants under these conditions differed by a factor 2 to 3”
✓ located verbatim in the source · abstract, characters 288–377

e1
“Maize plants were grown with nutrients supplied at adequate levels in hydroculture or in soil at 50–60% and at >95% relative humidity”
✓ located verbatim in the source · abstract, characters 144–277

e2
“there was neither a decrease in growth (fresh weight and dry weight) nor in ash content of the ‘humid’plants”
✓ located verbatim in the source · abstract, characters 379–487

Title

Does transpiration have an essential function in long‐distance ion transport in plants?

W. TANNER; H. BEEVERS Plant Cell & Environment 1990. doi:10.1111/j.1365-3040.1990.tb01089.x

Other claims from this paper (4)

Intervention effect High humidity did not decrease maize fresh or dry weight.
Intervention effect High humidity did not decrease maize ash content.
Intervention effect The upper shoot also showed no decrease in growth or ash content under high humidity.
Mechanism The authors suggest transpiration is not essential for long-distance mineral transport.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Extreme water stress inhibited PSII DCIP photoreduction by about 25%.

Taxon: wheatTriticum aestivumt0
Treatment: extreme stress conditionse0
Outcome: DCIP (2.6‐dichlorophenol indophenol) photoreduction of PSIIe0
Direction: inhibitione0
Value: ca 25%e0

Not reportedComparator

Verbatim

e0
“extreme stress conditions such as 40% decrease in relative water content (RWC) or 1.8 MPa in water potential (Ψ) caused ca 50% reduction in O 2 evolution and ca 25% inhibition of DCIP (2.6‐dichlorophenol indophenol) photoreduction of PSII”
✓ located verbatim in the source · abstract, characters 366–604

t0
“wheat leaves”
✓ located verbatim in the source · title, characters 94–106

Title

Effects of water stress on photochemical function and protein metabolism of photosystem II in wheat leaves

Jun Xian He; Jun Wang; Hou Guo Liang Physiologia Plantarum 1995. doi:10.1111/j.1399-3054.1995.tb05130.x

Other claims from this paper (7)

Intervention effect Mild leaf water deficit did not significantly affect PSII activity in wheat.
Intervention effect Extreme water stress reduced PSII oxygen evolution by about 50%.
Intervention effect DPC did not reverse inhibited PSII DCIP photoreduction.
Mechanism Water stress was inferred not to affect electron donation to PSII.
Association Major PSII proteins, including D1 and D2, declined on a chlorophyll basis as water stress increased.
Intervention effect Water stress impaired the potential synthesis of chloroplast proteins from their mRNAs.
Mechanism Water-stress effects on PSII protein metabolism may explain damage to PSII photochemistry.

Associationobservedoriginal resultmeasured

Claim · model-written summary

Conductance reduction in W-1 was paralleled by a rise in xylem sap ABA concentration

Taxon: sunflowerHelianthus annuuse1
Treatment: water was withheld under high relative humiditye0
Outcome: xylem sap ABA concentratione0
Direction: increaseinferrede0

Verbatim

e0
“In another experiment in which water was withheld under high relative humidity, when soil water content started to decrease W-1 rapidly closed stomata in the absence of any change in leaf water status and the reduction in conductance was paralleled by a rise in xylem sap ABA concentration”
✓ located verbatim in the source · abstract, characters 843–1132

e1
“The response of w-1, a wilty sunflower (Helianthus annuus L.) mutant, to water stress is described in comparison with the control line (W-1)”
✓ located verbatim in the source · abstract, characters 0–140

Title

Characterization of a wilty sunflower (Helianthus annuusL.) mutant II. Water relations, stomatal conductance, abscisic acid content in leaves and xylem sap of plants subjected to water deficiency

Marco Fambrini; Claudio Pugliesi; Paolo Vernieri; et al. Journal of Experimental Botany 1994. doi:10.1093/jxb/45.12.1809

Other claims from this paper (12)

Intervention effect The w-1 mutant leaves showed no significant change in leaf conductance during detached-leaf dehydration
Intervention effect Detached w-1 leaves dehydrated strongly during the first 30 min
Intervention effect W-1 reduced stomatal aperture rapidly in response to water loss
Intervention effect ABA increased slightly in w-1 leaves after 2 h of stress
Intervention effect ABA increased 20-fold in W-1 leaves after 2 h of stress
Intervention effect Potted w-1 plants dehydrated quickly and lost turgor under water withholding
Intervention effect W-1 maintained positive turgor for a longer period under water withholding
Intervention effect Wild-type plants accumulated ABA in response to small changes in leaf water potential
Intervention effect The mutant changed ABA content and stomatal conductance only at very low water potentials
Intervention effect W-1 reduced conductance rapidly under high humidity when soil water declined, without leaf water change
Intervention effect The mutant accumulated ABA in xylem sap only when soil and leaf water potential were dramatically reduced
Mechanism Low endogenous ABA and slow ABA synthesis appear to explain the high sensitivity of w-1 to water stress

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Drought increased the elastic modulus of rose leaves in each irradiance treatment.

Taxon: rosee0
Treatment: droughte6
Outcome: elastic moduluse6
Direction: increasee6

Not reportedComparator

Verbatim

e0
“examined in leaves of rose (Rosa hybrida L. `Samantha')”
✓ located verbatim in the source · abstract, characters 77–132

e6
“drought induced an increase in elastic modulus and a decrease in relative water content at zero turgor”
✓ located verbatim in the source · abstract, characters 959–1061

Title

Osmotic and Turgor Adjustment in Rosa Foliage Drought-stressed under Varying Irradiance

Robert M. Augé; Ann J.W. Stodola; Brian D. Pennell Journal of the American Society for Horticultural Science 1990. doi:10.21273/jashs.115.4.661

Other claims from this paper (7)

Intervention effect Drought decreased osmotic potential at full turgor in rose leaves, by 0.42, 0.36 and 0.23 MPa at 100%, 70% and 30% irradiance.
Observation Plants under 100% and 70% irradiance showed similar osmotic adjustment to drought.
Intervention effect Under well-watered conditions, plants at 30% irradiance had higher osmotic potential at full turgor than at the other two irradiance levels.
Intervention effect Plants at 30% irradiance showed only 55% as much osmotic adjustment to drought.
Intervention effect Drought decreased the relative water content at zero turgor of rose leaves in each irradiance treatment.
Intervention effect Turgor pressure was higher across a range of relative water contents at 100% and 70% irradiance than at 30% irradiance.
Intervention effect Heavy but not mild shading inhibited osmotic and turgor adjustment in rose leaves during drought.

Observationobservedoriginal resultno effectmeasured

Claim · model-written summary

Armeria had no glutathione loss.

Taxon: Armeria maritimaArmeria maritimae0
Outcome: glutathionee0
Direction: no losse0

Verbatim

e0
“Armeria maritima showed similar decreases in relative water content and dry weight after droughting, but a quantitatively smaller decrease in ascorbate with no loss of glutathione”
✓ located verbatim in the source · abstract, characters 588–767

Title

The role of ascorbate in drought‐treated Cochlearia atlantica Pobed. and Armeria maritima (Mill.) Willd.

SARAH M. BUCKLAND; ADAM H. PRICE; GEORGE A. F. HENDRY New Phytologist 1991. doi:10.1111/j.1469-8137.1991.tb01019.x

Other claims from this paper (11)

Intervention effect Drought decreased ascorbate and glutathione in Cochlearia.
Intervention effect Drought did not increase lipid peroxidation in Cochlearia.
Intervention effect Drought destroyed chlorophyll in Cochlearia.
Intervention effect Drought decreased protein in Cochlearia.
Observation Five oxygen processing enzyme activities changed little or not at all in Cochlearia.
Observation Armeria and Cochlearia had similar decreases in relative water content and dry weight after drought.
Observation Armeria had a smaller ascorbate decrease than Cochlearia.
Intervention effect Drought markedly increased superoxide dismutasc and peroxidase activity in Armeria.
Intervention effect Drought increased lipid peroxidation in Armeria.
Mechanism The authors infer a role for ascorbic acid and glutathione in Cochlearia drought response.
Mechanism The authors infer that enzymic processing largely protects Armeria under drought.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

The mutant accumulated ABA in xylem sap only when soil and leaf water potential were dramatically reduced

Taxon: sunflowerHelianthus annuuse1
Material: mutante0
Treatment: soil water content and leaf water potential were dramatically reducede0
Outcome: ABA in the xylem sape0
Direction: increaseinferrede0
Comparator: W-1e2

Verbatim

e0
“By contrast the mutant started to accumulate ABA in the xylem sap and to close stomata when soil water content and leaf water potential were dramatically reduced”
✓ located verbatim in the source · abstract, characters 1134–1295

e1
“The response of w-1, a wilty sunflower (Helianthus annuus L.) mutant, to water stress is described in comparison with the control line (W-1)”
✓ located verbatim in the source · abstract, characters 0–140

e2
“In another experiment in which water was withheld under high relative humidity, when soil water content started to decrease W-1 rapidly closed stomata in the absence of any change in leaf water status and the reduction in conductance was paralleled by a rise in xylem sap ABA concentration”
✓ located verbatim in the source · abstract, characters 843–1132

Title

Characterization of a wilty sunflower (Helianthus annuusL.) mutant II. Water relations, stomatal conductance, abscisic acid content in leaves and xylem sap of plants subjected to water deficiency

Marco Fambrini; Claudio Pugliesi; Paolo Vernieri; et al. Journal of Experimental Botany 1994. doi:10.1093/jxb/45.12.1809

Other claims from this paper (12)

Intervention effect The w-1 mutant leaves showed no significant change in leaf conductance during detached-leaf dehydration
Intervention effect Detached w-1 leaves dehydrated strongly during the first 30 min
Intervention effect W-1 reduced stomatal aperture rapidly in response to water loss
Intervention effect ABA increased slightly in w-1 leaves after 2 h of stress
Intervention effect ABA increased 20-fold in W-1 leaves after 2 h of stress
Intervention effect Potted w-1 plants dehydrated quickly and lost turgor under water withholding
Intervention effect W-1 maintained positive turgor for a longer period under water withholding
Intervention effect Wild-type plants accumulated ABA in response to small changes in leaf water potential
Intervention effect The mutant changed ABA content and stomatal conductance only at very low water potentials
Intervention effect W-1 reduced conductance rapidly under high humidity when soil water declined, without leaf water change
Association Conductance reduction in W-1 was paralleled by a rise in xylem sap ABA concentration
Mechanism Low endogenous ABA and slow ABA synthesis appear to explain the high sensitivity of w-1 to water stress

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“decrease in relative water content”

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