Abstract
The mechanism(s) importing salt tolerance to plants remains unresolved. Although cotton ( Gossypium hirsutum L.) is classified as salt‐tolerant plant, variation in salt tolerance has been observed among different cultivars. The purpose of this study was to determine if more salt‐tolerant cultivars contain higher constitutive or inducible levels of antioxidants than more salt‐sensitive cultivars. Greenhouse‐grown salt‐tolerant (cv. Acaia 1517‐88 and Acala 1517‐SR2) and salt‐sensitive (cv. Deltapine 50 and Stoneville 825) cotton plants treated with either 0 or 150 m M NaCl were analyzed for differences in growth and antioxidant capocities. The 150 m M NaCl treatment resulted in more than 40% reduction in growth of Deltapine 50 and Stoneville 825 and less than 30% reduction in the Acala cultivars. The more salt‐tolerant cultivars had higher constitutive levels of catalase (121‐215%) and u‐tocopherol (312‐420%). The salt treatment resulted in a 38 to 72% increase in peroxidase activity and a 55 to 101% increase in glutathione reductase activity in the Acala cultivars while the activities of these enzymes remained constant or decreased in the more sensitive cultivars. The Acala cultivars also exhibited a lower oxidized/reduced ascorbic acid ratio and a higher reduced/oxidized glutathione ratio than the more sensitive cultivars when grown at 150 m M NaCl. When subjected to a one‐time salt treatment, lipid peroxidation in Deltapine 50 increased 51% over Acala 1517‐88. These data indicate that protection from oxidative damage by higher levels of antioxidants and a more active ascorbate‐glutathione cycle may be involved in tbe development of salt tolerance in cotton.
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Claims 11
Claim · model-written summary
More salt-tolerant cotton cultivars had higher constitutive catalase levels (121-215%).
- Taxon
- cotton
Gossypium hirsutumt0 - Material
- more salt‐tolerant cultivarse0
- Outcome
- constitutive levels of catalasee0
- Direction
- highere0
- Value
- 121‐215%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton”
e0“The more salt‐tolerant cultivars had higher constitutive levels of catalase (121‐215%) and u‐tocopherol (312‐420%)”
Claim · model-written summary
More salt-tolerant cotton cultivars had higher constitutive u-tocopherol levels (312-420%).
- Taxon
- cottonGossypium hirsutumt0
- Material
- more salt‐tolerant cultivarse0
- Outcome
- u‐tocopherole0
- Direction
- highere0
- Value
- 312‐420%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton”
e0“The more salt‐tolerant cultivars had higher constitutive levels of catalase (121‐215%) and u‐tocopherol (312‐420%)”
Claim · model-written summary
NaCl treatment increased peroxidase activity by 38 to 72% in the Acala cultivars.
- Taxon
- cottonGossypium hirsutumt0
- Material
- Acala cultivarse2
- Treatment
- salt treatmente2
- Outcome
- peroxidase activitye2
- Direction
- increasee2
- Value
- 38 to 72%e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton”
e2“The salt treatment resulted in a 38 to 72% increase in peroxidase activity and a 55 to 101% increase in glutathione reductase activity in the Acala cultivars while the activities of these enzymes remained constant or decreased in the more sensitive cultivars”
Claim · model-written summary
NaCl treatment increased glutathione reductase activity by 55 to 101% in the Acala cultivars.
- Taxon
- cottonGossypium hirsutumt0
- Material
- Acala cultivarse2
- Treatment
- salt treatmente2
- Outcome
- glutathione reductase activitye2
- Direction
- increasee2
- Value
- 55 to 101%e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton”
e2“The salt treatment resulted in a 38 to 72% increase in peroxidase activity and a 55 to 101% increase in glutathione reductase activity in the Acala cultivars while the activities of these enzymes remained constant or decreased in the more sensitive cultivars”
Claim · model-written summary
In the more sensitive cotton cultivars, enzyme activities remained constant or decreased under NaCl treatment.
- Taxon
- cottonGossypium hirsutumt0
- Material
- more sensitive cultivarse2
- Treatment
- salt treatmente2
- Outcome
- activities of these enzymese2
- Direction
- remained constant or decreasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton”
e2“The salt treatment resulted in a 38 to 72% increase in peroxidase activity and a 55 to 101% increase in glutathione reductase activity in the Acala cultivars while the activities of these enzymes remained constant or decreased in the more sensitive cultivars”
Claim · model-written summary
At 150 mM NaCl, the oxidized/reduced ascorbic acid ratio was lower in the Acala cultivars than in the more sensitive cultivars.
- Taxon
- cottonGossypium hirsutumt0
- Material
- Acala cultivarse3
- Treatment
- 150 m M NaCle3
- Outcome
- oxidized/reduced ascorbic acid ratioe3
- Direction
- lowere3
- Comparator
- more sensitive cultivarse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton”
e3“The Acala cultivars also exhibited a lower oxidized/reduced ascorbic acid ratio and a higher reduced/oxidized glutathione ratio than the more sensitive cultivars when grown at 150 m M NaCl”
Claim · model-written summary
At 150 mM NaCl, the reduced/oxidized glutathione ratio was higher in the Acala cultivars than in the more sensitive cultivars.
- Taxon
- cottonGossypium hirsutumt0
- Material
- Acala cultivarse3
- Treatment
- 150 m M NaCle3
- Outcome
- reduced/oxidized glutathione ratioe3
- Direction
- highere3
- Comparator
- more sensitive cultivarse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton”
e3“The Acala cultivars also exhibited a lower oxidized/reduced ascorbic acid ratio and a higher reduced/oxidized glutathione ratio than the more sensitive cultivars when grown at 150 m M NaCl”
Claim · model-written summary
One-time salt treatment increased lipid peroxidation in Deltapine 50 by 51% over Acala 1517-88.
- Taxon
- cottonGossypium hirsutumt0
- Material
- Deltapine 50e4
- Treatment
- one‐time salt treatmente4
- Outcome
- lipid peroxidatione4
- Direction
- increasede4
- Value
- 51%e4
- Comparator
- Acala 1517‐88e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton”
e4“When subjected to a one‐time salt treatment, lipid peroxidation in Deltapine 50 increased 51% over Acala 1517‐88”
Claim · model-written summary
The 150 mM NaCl treatment reduced growth of Deltapine 50 and Stoneville 825 by more than 40%.
- Taxon
- cottonGossypium hirsutumt0
- Material
- Deltapine 50 and Stoneville 825e1
- Treatment
- 150 m M NaCl treatmente1
- Outcome
- growthe1
- Direction
- reductione1
- Value
- more than 40%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton”
e1“The 150 m M NaCl treatment resulted in more than 40% reduction in growth of Deltapine 50 and Stoneville 825 and less than 30% reduction in the Acala cultivars”
Claim · model-written summary
The 150 mM NaCl treatment reduced growth of Acala cultivars by less than 30%.
- Taxon
- cottonGossypium hirsutumt0
- Material
- Acala cultivarse1
- Treatment
- 150 m M NaCl treatmente1
- Outcome
- growthe1
- Direction
- reductione1
- Value
- less than 30%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton”
e1“The 150 m M NaCl treatment resulted in more than 40% reduction in growth of Deltapine 50 and Stoneville 825 and less than 30% reduction in the Acala cultivars”
Claim · model-written summary
Protection from oxidative damage by higher antioxidant levels and a more active ascorbate-glutathione cycle may be involved in the development of salt tolerance.
- Taxon
- cottonGossypium hirsutumt0
- Outcome
- development of salt tolerancee5
- Qualifier
- higher levels of antioxidantse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cotton”
e5“protection from oxidative damage by higher levels of antioxidants and a more active ascorbate‐glutathione cycle may be involved in tbe development of salt tolerance”
The same questions in other papers
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11 papers in the same direction as this paper · 5 in the opposite direction
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See all 17 papers →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.