Abstract
Increased aldose reductase (ALR) activities were detected in the leaf tissues of tomato plants grown for 3 weeks in culture medium containing 10-7 or 10-4 M salicylic acid (SA), and in the roots after the 10-4 M SA pretreatment. The ALR activity changed in parallel with the sorbitol content in the leaves of the SA-treated plants. Salt stress elicited by 100 mM NaCl enhanced the accumulation of sorbitol in the leaves of control plants and as compared with the untreated control the sorbitol content in the SA-pretreated leaves remained elevated under salt stress. DEAE cellulose anionexchange column purification of the protein precipitated with 80 % (NH4)2SO4 revealed two enzyme fractions with ALR activity in both the leaf and the root tissues. The fraction of the leaf extract that was not bound to the column reacted with glucose and glucose-6-P as substrates, whereas glucose was not a substrate for the bound fraction or for root isoenzymes. The root enzyme was less sensitive to salt treatment: 50 mM NaCl caused 30 % inhibition in the leaf extract, whereas the enzyme activity of the root extract was not affected. It is suggested that increased ALR activity and sorbitol synthesis in the leaves of SA-treated tomato plants may result in an improved salt stress tolerance.
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Claims 10
Claim · model-written summary
Salicylic acid at 10-7 or 10-4 M increased aldose reductase activity in tomato leaf tissues.
- Taxon
- tomato
Solanum lycopersicume0 - Organ / stage
- leaf tissuese0
- Treatment
- 10-7 or 10-4 M salicylic acid (SA)e0
- Gene
- aldose reductase (ALR)e0
- Outcome
- aldose reductase (ALR) activitiese0
- Direction
- Increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased aldose reductase (ALR) activities were detected in the leaf tissues of tomato plants grown for 3 weeks in culture medium containing 10-7 or 10-4 M salicylic acid (SA), and in the roots after the 10-4 M SA pretreatment”
Claim · model-written summary
The 10-4 M salicylic acid pretreatment increased aldose reductase activity in tomato roots.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- rootse0
- Treatment
- 10-4 M SA pretreatmente0
- Gene
- aldose reductase (ALR)e0
- Outcome
- aldose reductase (ALR) activitiese0
- Direction
- Increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased aldose reductase (ALR) activities were detected in the leaf tissues of tomato plants grown for 3 weeks in culture medium containing 10-7 or 10-4 M salicylic acid (SA), and in the roots after the 10-4 M SA pretreatment”
Claim · model-written summary
Aldose reductase activity changed in parallel with sorbitol content in the leaves of salicylic acid-treated tomato plants.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- leavese1
- Treatment
- SA-treated plantse1
- Gene
- ALRe1
- Outcome
- sorbitol contente1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased aldose reductase (ALR) activities were detected in the leaf tissues of tomato plants grown for 3 weeks in culture medium containing 10-7 or 10-4 M salicylic acid (SA), and in the roots after the 10-4 M SA pretreatment”
e1“The ALR activity changed in parallel with the sorbitol content in the leaves of the SA-treated plants”
Claim · model-written summary
Salt stress with 100 mM NaCl increased sorbitol accumulation in the leaves of control tomato plants.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- leavese2
- Treatment
- 100 mM NaCle2
- Outcome
- accumulation of sorbitole2
- Direction
- enhancede2
- Comparator
- control plantse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased aldose reductase (ALR) activities were detected in the leaf tissues of tomato plants grown for 3 weeks in culture medium containing 10-7 or 10-4 M salicylic acid (SA), and in the roots after the 10-4 M SA pretreatment”
e2“Salt stress elicited by 100 mM NaCl enhanced the accumulation of sorbitol in the leaves of control plants”
Claim · model-written summary
Under salt stress, sorbitol content in salicylic acid-pretreated leaves remained elevated relative to the untreated control.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- leavese3
- Treatment
- SA-pretreatede3
- Outcome
- sorbitol contente3
- Direction
- remained elevatede3
- Qualifier
- under salt stresse3
- Comparator
- untreated controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased aldose reductase (ALR) activities were detected in the leaf tissues of tomato plants grown for 3 weeks in culture medium containing 10-7 or 10-4 M salicylic acid (SA), and in the roots after the 10-4 M SA pretreatment”
e3“as compared with the untreated control the sorbitol content in the SA-pretreated leaves remained elevated under salt stress”
Claim · model-written summary
The leaf extract fraction not bound to the column reacted with glucose and glucose-6-P as substrates.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- leaf extracte4
- Outcome
- reacted with glucose and glucose-6-P as substratese4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased aldose reductase (ALR) activities were detected in the leaf tissues of tomato plants grown for 3 weeks in culture medium containing 10-7 or 10-4 M salicylic acid (SA), and in the roots after the 10-4 M SA pretreatment”
e4“The fraction of the leaf extract that was not bound to the column reacted with glucose and glucose-6-P as substrates”
Claim · model-written summary
Glucose was not a substrate for the bound fraction or for root isoenzymes.
- Taxon
- tomatoSolanum lycopersicume0
- Outcome
- substratee5
- Qualifier
- glucose was not a substrate for the bound fraction or for root isoenzymese5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased aldose reductase (ALR) activities were detected in the leaf tissues of tomato plants grown for 3 weeks in culture medium containing 10-7 or 10-4 M salicylic acid (SA), and in the roots after the 10-4 M SA pretreatment”
e5“whereas glucose was not a substrate for the bound fraction or for root isoenzymes”
Claim · model-written summary
50 mM NaCl caused a 30% inhibition of aldose reductase activity in the leaf extract.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- leaf extracte6
- Treatment
- 50 mM NaCle6
- Outcome
- inhibitione6
- Direction
- inhibitione6
- Value
- 30 %e6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased aldose reductase (ALR) activities were detected in the leaf tissues of tomato plants grown for 3 weeks in culture medium containing 10-7 or 10-4 M salicylic acid (SA), and in the roots after the 10-4 M SA pretreatment”
e6“50 mM NaCl caused 30 % inhibition in the leaf extract”
Claim · model-written summary
50 mM NaCl did not affect aldose reductase activity in the root extract.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- root extracte7
- Treatment
- 50 mM NaCle6
- Outcome
- enzyme activitye7
- Direction
- not affectede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased aldose reductase (ALR) activities were detected in the leaf tissues of tomato plants grown for 3 weeks in culture medium containing 10-7 or 10-4 M salicylic acid (SA), and in the roots after the 10-4 M SA pretreatment”
e6“50 mM NaCl caused 30 % inhibition in the leaf extract”
e7“whereas the enzyme activity of the root extract was not affected”
Claim · model-written summary
Increased aldose reductase activity and sorbitol synthesis in leaves of salicylic acid-treated tomato may improve salt stress tolerance (hypothesis).
- Taxon
- tomatoSolanum lycopersicume1
- Outcome
- salt stress tolerancee1
- Qualifier
- increased ALR activity and sorbitol synthesis in the leaves of SA-treated tomato plantse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“It is suggested that increased ALR activity and sorbitol synthesis in the leaves of SA-treated tomato plants may result in an improved salt stress tolerance”
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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.