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“decrease in relative water content”

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1990 2000 ’10 ’20

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Organism: Helianthus annuus ✕

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

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 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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