Abstract
Changes in abscisic acid, phaseic acid, stomatal resistance, water potential, osmotic potential, turgor potential, proline, reducing sugars and ion content (Na+, K+, Cl-) in leaves from grapevines (Vitis vinifera L.) subjected to 0, 25, 50 or 100 mM NaCl (osmotic potentials of 0, - 0.1, - 0.2 and - 0.4 MPa, respectively) were monitored over a 3-week period. Abscisic acid concentration increased within 6 h for the 50 and 100 mM NaCl-treated vines. Proline did not accumulate until the next day for the 100 mM NaCl-treated plants and continued to accumulate for the duration of the experiment. Phaseic acid showed kinetics consistent with its being derived from abscisic acid. Stomatal resistance to water vapour exchange increased in the salt-treated plants over the course of the experiment despite a decline in abscisic acid concentration after the initial upsurge. Reducing sugar concentration showed an early upsurge, its contribution to osmotic readjustment being at least equal to that of accumulated Na+, K+ and Cl- the day after stress began. Potassium was preferentially accumulated over sodium into leaves during the first 8 days of the experiment and the sum of these two cations generally balanced accumulating chloride. Except for an initial loss of turgor in vines given 100 mM NaCl, turgor potential was maintained within 0.1 MPa of control plants for all of the treatments throughout the experiment.
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Claims 12
Claim · model-written summary
Abscisic acid concentration increased within 6 h in vines given 50 and 100 mM NaCl compared with control plants.
- Treatment
- 50 and 100 mM NaCle1
- Outcome
- Abscisic acid concentratione1
- Direction
- increasede1
- Qualifier
- within 6 he1
- Comparator
- control plantse7
VitisOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Abscisic acid concentration increased within 6 h for the 50 and 100 mM NaCl-treated vines”
e7“turgor potential was maintained within 0.1 MPa of control plants for all of the treatments throughout the experiment”
t0“Salt-Stressed Grapevine Leaves”
Claim · model-written summary
Proline did not accumulate until the next day in plants given 100 mM NaCl.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Proline did not accumulate until the next day for the 100 mM NaCl-treated plants and continued to accumulate for the duration of the experiment”
t0“Salt-Stressed Grapevine Leaves”
Claim · model-written summary
Proline continued to accumulate for the duration of the experiment in plants given 100 mM NaCl.
- Treatment
- 100 mM NaCle2
- Outcome
- Prolinee2
- Qualifier
- continued to accumulate for the duration of the experimente2
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Proline did not accumulate until the next day for the 100 mM NaCl-treated plants and continued to accumulate for the duration of the experiment”
t0“Salt-Stressed Grapevine Leaves”
Claim · model-written summary
Phaseic acid kinetics are consistent with its being derived from abscisic acid (author interpretation).
- Compound
- abscisic acide3
- Outcome
- Phaseic acide3
- Qualifier
- kinetics consistent with its being derived frome3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Phaseic acid showed kinetics consistent with its being derived from abscisic acid”
t0“Salt-Stressed Grapevine Leaves”
Claim · model-written summary
Stomatal resistance to water vapour exchange increased in salt-treated grapevine over the experiment.
- Treatment
- salt-treated plantse4
- Outcome
- Stomatal resistance to water vapour exchangee4
- Direction
- increasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Stomatal resistance to water vapour exchange increased in the salt-treated plants over the course of the experiment despite a decline in abscisic acid concentration after the initial upsurge”
t0“Salt-Stressed Grapevine Leaves”
Claim · model-written summary
Abscisic acid concentration declined after its initial upsurge in salt-treated grapevine.
- Treatment
- salt-treated plantse4
- Outcome
- abscisic acid concentratione4
- Direction
- declinee4
- Qualifier
- after the initial upsurgee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Stomatal resistance to water vapour exchange increased in the salt-treated plants over the course of the experiment despite a decline in abscisic acid concentration after the initial upsurge”
t0“Salt-Stressed Grapevine Leaves”
Claim · model-written summary
Reducing sugar concentration showed an early upsurge in grapevine leaves.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Reducing sugar concentration showed an early upsurge, its contribution to osmotic readjustment being at least equal to that of accumulated Na+, K+ and Cl- the day after stress began”
t0“Salt-Stressed Grapevine Leaves”
Claim · model-written summary
Reducing sugar contributed at least as much to osmotic readjustment as accumulated Na+, K+ and Cl- (author interpretation).
- Compound
- Reducing sugare5
- Outcome
- osmotic readjustmente5
- Qualifier
- at least equal to that of accumulated Na+, K+ and Cl-e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Reducing sugar concentration showed an early upsurge, its contribution to osmotic readjustment being at least equal to that of accumulated Na+, K+ and Cl- the day after stress began”
t0“Salt-Stressed Grapevine Leaves”
Claim · model-written summary
Potassium was preferentially accumulated over sodium into leaves during the first 8 days.
- Organ / stage
- leavese6
- Outcome
- Potassiume6
- Direction
- preferentially accumulatede6
- Qualifier
- during the first 8 days of the experimente6
- Comparator
- sodiume6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Potassium was preferentially accumulated over sodium into leaves during the first 8 days of the experiment and the sum of these two cations generally balanced accumulating chloride”
t0“Salt-Stressed Grapevine Leaves”
Claim · model-written summary
The sum of potassium and sodium generally balanced accumulating chloride in grapevine leaves.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Potassium was preferentially accumulated over sodium into leaves during the first 8 days of the experiment and the sum of these two cations generally balanced accumulating chloride”
t0“Salt-Stressed Grapevine Leaves”
Claim · model-written summary
Vines given 100 mM NaCl showed an initial loss of turgor compared with control plants.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Except for an initial loss of turgor in vines given 100 mM NaCl, turgor potential was maintained within 0.1 MPa of control plants for all of the treatments throughout the experiment”
t0“Salt-Stressed Grapevine Leaves”
Claim · model-written summary
Turgor potential was maintained within 0.1 MPa of control plants across all treatments.
- Treatment
- all of the treatmentse7
- Outcome
- turgor potentiale7
- Direction
- maintainede7
- Value
- within 0.1 MPae7
- Comparator
- control plantse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Except for an initial loss of turgor in vines given 100 mM NaCl, turgor potential was maintained within 0.1 MPa of control plants for all of the treatments throughout the experiment”
t0“Salt-Stressed Grapevine Leaves”
The same questions in other papers
sodium chloride · physiology: water · VitisPositive and negative results
1 in the opposite direction
- positive
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.