Abstract
Infection with Globodera rostochiensis increased stomatal resistances and decreased water use of both Cara (resistant, tolerant) and Pentland Dell (non-resistant, intolerant) potato plants. Exogenous abscisic acid (A.B.A.) increased both of these effects: it increased stomatal resistance of Pentland Dell severalfold but only for two days, whereas the increase was smaller in Cara but lasted for about six days. Water stress also increased stomatal resistance and decreased water use with the greater effects on Cara, probably because Cara plants were bigger than those of Pentland Dell and exhausted the water reserves in their pots more quickly. Measurements show that Cara may contain up to nine times the concentration of A.B.A. in its leaves as Pentland Dell subjected to the same treatments, but that the proportional changes in A.B.A. content caused by nematode infection and water stress are greater in Pentland Dell. Stomatal function was assessed on epidermal peels of th tw cultivars bathed in a range of concentrations of calcium chloride solution and illuminated for three hours: nematode infection had no effect on stomatal apertures but mean stomatal apertures were greater in Pentland Dell than Cara. RESUME Effets de Globodera rostochiensis, du stress hydrique e t de l’acide abcissique exogène sur le fonctionnement des stolnates et l’utilisation de l’eau chez les cultivars Cara et Pentland Dell de la ponme de terre L’infestation par Globodera rostochiensis accroît les résistances des stomates t diminue l’utilisation de l’eau chez les deux cultivars Cara (résistant, tolérant) et Pentland Dell (non résistant, non tolérant) de la pomme de terre. L‘acide abcissique exogène (A.A.E.)
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Claims 11
Claim · model-written summary
Globodera infection increased stomatal resistance in both potato cultivars.
- Taxon
- potato
Solanum tuberosume0 - Material
- Carae0
- Treatment
- Infection with Globodera rostochiensise0
- Interactor
- Globodera rostochiensis
Globodera rostochiensise0pathogen - Outcome
- stomatal resistancese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Infection with Globodera rostochiensis increased stomatal resistances and decreased water use of both Cara (resistant, tolerant) and Pentland Dell (non-resistant, intolerant) potato plants.”
Claim · model-written summary
Globodera infection decreased water use in both potato cultivars.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- Infection with Globodera rostochiensise0
- Interactor
- Globodera rostochiensisGlobodera rostochiensise0pathogen
- Outcome
- water usee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Infection with Globodera rostochiensis increased stomatal resistances and decreased water use of both Cara (resistant, tolerant) and Pentland Dell (non-resistant, intolerant) potato plants.”
Claim · model-written summary
Exogenous abscisic acid amplified the infection effects on stomatal resistance and water use.
- Taxon
- potatoSolanum tuberosume1
- Treatment
- Exogenous abscisic acide0
- Outcome
- stomatal resistances and decreased water usee1
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous abscisic acid (A.B.A.) increased both of these effects”
e1“Infection with Globodera rostochiensis increased stomatal resistances and decreased water use of both Cara (resistant, tolerant) and Pentland Dell (non-resistant, intolerant) potato plants.”
Claim · model-written summary
Abscisic acid increased Pentland Dell stomatal resistance severalfold for two days.
- Taxon
- potatoSolanum tuberosumt0
- Material
- Pentland Delle0
- Treatment
- Exogenous abscisic acide1
- Outcome
- stomatal resistancee0
- Direction
- increasede0
- Value
- severalfolde0
- Qualifier
- only for two dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it increased stomatal resistance of Pentland Dell severalfold but only for two days”
e1“Exogenous abscisic acid (A.B.A.)”
t0“potato plants”
Claim · model-written summary
Abscisic acid caused a smaller stomatal resistance increase in Cara lasting about six days.
- Taxon
- potatoSolanum tuberosumt0
- Material
- Carae0
- Treatment
- Exogenous abscisic acide1
- Outcome
- stomatal resistancee1
- Direction
- increasee0
- Qualifier
- about six dayse0
- Comparator
- Pentland Dellt1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the increase was smaller in Cara but lasted for about six days”
e1“Exogenous abscisic acid (A.B.A.) increased both of these effects: it increased stomatal resistance”
t0“potato plants”
t1“Pentland Dell”
Claim · model-written summary
Water stress increased stomatal resistance, more in Cara.
- Taxon
- potatoSolanum tuberosumt0
- Material
- Carae0
- Treatment
- Water stresse0
- Outcome
- stomatal resistancee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water stress also increased stomatal resistance and decreased water use with the greater effects on Cara”
t0“potato plants”
Claim · model-written summary
Water stress decreased water use, more in Cara.
- Taxon
- potatoSolanum tuberosumt0
- Material
- Carae0
- Treatment
- Water stresse0
- Outcome
- water usee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water stress also increased stomatal resistance and decreased water use with the greater effects on Cara”
t0“potato plants”
Claim · model-written summary
Cara leaves contained up to nine times the abscisic acid concentration of equally treated Pentland Dell leaves.
- Taxon
- potatoSolanum tuberosumt0
- Material
- Carae0
- Organ / stage
- leavese0
- Outcome
- concentration of A.B.A.e0
- Direction
- higherinferrede0
- Value
- up to nine timese0
- Comparator
- Pentland Delle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cara may contain up to nine times the concentration of A.B.A. in its leaves as Pentland Dell subjected to the same treatments”
t0“potato plants”
Claim · model-written summary
Infection and water stress caused greater proportional abscisic acid changes in Pentland Dell than Cara.
- Taxon
- potatoSolanum tuberosumt0
- Material
- Pentland Delle0
- Treatment
- nematode infection and water stresse0
- Outcome
- proportional changes in A.B.A. contente0
- Direction
- greatere0
- Comparator
- Carat1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the proportional changes in A.B.A. content caused by nematode infection and water stress are greater in Pentland Dell”
t0“potato plants”
t1“Cara and Pentland Dell”
Claim · model-written summary
Nematode infection did not change stomatal apertures in epidermal peels.
- Taxon
- potatoSolanum tuberosumt0
- Organ / stage
- epidermal peelse1
- Treatment
- nematode infectione0
- Outcome
- stomatal aperturese0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nematode infection had no effect on stomatal apertures”
t0“potato plants”
e1“Stomatal function was assessed on epidermal peels”
Claim · model-written summary
Mean stomatal apertures were greater in Pentland Dell than Cara.
- Taxon
- potatoSolanum tuberosumt0
- Material
- Pentland Delle0
- Outcome
- mean stomatal aperturese0
- Direction
- greatere0
- Comparator
- Carae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mean stomatal apertures were greater in Pentland Dell than Cara”
t0“potato plants”
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Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.