Abstract
The salinity tolerance mechanism in date palm through antioxidation has not been completely deciphered to date. Therefore, this study aimed to investigate the role of various antioxidants in salinity tolerance. Two date palm cultivars, contrasting in salinity tolerance, were used as model plants in a comparative study designed to detect changes in growth, Na+ and K+ uptake, reactive oxygen species (ROS), and antioxidant accumulations, when plants were exposed to salt stress. The results showed that salinity treatment had a more substantial negative effect on the growth and photosynthetic pigmentation of the susceptible ‘Zabad’ cultivar than on the tolerant ‘Umsila’ cultivar, probably due to the ability of ‘Umsila’ to accumulate less Na+ and more K+, to maintain a normal concentration of ROS and to produce more non-enzymatic antioxidants, including glutathione, phenolic compounds, flavonoids, and proline. Under salinity, ‘Umsila’ could also activate more superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase (APX) than ‘Zabad’. These results suggest that the tolerance of ‘Umsila’ is partially due to the balanced Na+ and K+ uptake and to the relatively high concentration of ROS-scavenging metabolites. Together, these results indicate that the antioxidant mechanism is crucial for salinity tolerance in date palms. However, other mechanisms may also be involved in this trait.
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Claims 9
Claim · model-written summary
Salinity reduced growth more in Zabad than in Umsila.
- Taxon
- Date Palm
Phoenix dactyliferat0 - Material
- ‘Zabad’e0
- Treatment
- salinity treatmente0
- Outcome
- growthe0
- Direction
- more substantial negative effecte0
- Comparator
- ‘Umsila’e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“salinity treatment had a more substantial negative effect on the growth and photosynthetic pigmentation of the susceptible ‘Zabad’ cultivar than on the tolerant ‘Umsila’ cultivar”
t0“Date Palm”
Claim · model-written summary
Salinity reduced photosynthetic pigmentation more in Zabad than in Umsila.
- Taxon
- Date PalmPhoenix dactyliferat0
- Material
- ‘Zabad’e0
- Treatment
- salinity treatmente0
- Outcome
- photosynthetic pigmentatione0
- Direction
- more substantial negative effecte0
- Comparator
- ‘Umsila’e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“salinity treatment had a more substantial negative effect on the growth and photosynthetic pigmentation of the susceptible ‘Zabad’ cultivar than on the tolerant ‘Umsila’ cultivar”
t0“Date Palm”
Claim · model-written summary
Umsila accumulated less sodium under salinity.
- Taxon
- Date PalmPhoenix dactyliferat0
- Material
- ‘Umsila’e0
- Outcome
- Na+e0
- Direction
- lesse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the ability of ‘Umsila’ to accumulate less Na+ and more K+”
t0“Date Palm”
Claim · model-written summary
Umsila accumulated more potassium under salinity.
- Taxon
- Date PalmPhoenix dactyliferat0
- Material
- ‘Umsila’e0
- Outcome
- K+e0
- Direction
- moree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the ability of ‘Umsila’ to accumulate less Na+ and more K+”
t0“Date Palm”
Claim · model-written summary
Umsila maintained normal ROS concentration.
- Taxon
- Date PalmPhoenix dactyliferat0
- Material
- ‘Umsila’e0
- Outcome
- concentration of ROSe0
- Direction
- normale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“‘Umsila’ to accumulate less Na+ and more K+, to maintain a normal concentration of ROS”
t0“Date Palm”
Claim · model-written summary
Umsila produced more glutathione, phenolic compounds and flavonoids.
- Taxon
- Date PalmPhoenix dactyliferat0
- Material
- ‘Umsila’e1
- Outcome
- glutathione, phenolic compounds, flavonoidse0
- Direction
- moree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to produce more non-enzymatic antioxidants, including glutathione, phenolic compounds, flavonoids, and proline”
e1“‘Umsila’ to accumulate less Na+”
t0“Date Palm”
Claim · model-written summary
Umsila produced more proline.
- Taxon
- Date PalmPhoenix dactyliferat0
- Material
- ‘Umsila’e1
- Outcome
- prolinee0
- Direction
- moree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to produce more non-enzymatic antioxidants, including glutathione, phenolic compounds, flavonoids, and proline”
e1“‘Umsila’ to accumulate less Na+”
t0“Date Palm”
Claim · model-written summary
Under salinity, Umsila activated more SOD, CAT and APX than Zabad.
- Taxon
- Date PalmPhoenix dactyliferat0
- Material
- ‘Umsila’e0
- Outcome
- superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase (APX)e0
- Direction
- moree0
- Comparator
- ‘Zabad’e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under salinity, ‘Umsila’ could also activate more superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase (APX) than ‘Zabad’.”
t0“Date Palm”
Claim · model-written summary
Authors attribute Umsila salinity tolerance partly to balanced Na+ and K+ uptake and high ROS-scavenging metabolites.
- Taxon
- Date PalmPhoenix dactyliferat0
- Material
- ‘Umsila’e0
- Outcome
- tolerancee0
- Qualifier
- balanced Na+ and K+ uptake and to the relatively high concentration of ROS-scavenging metabolitese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the tolerance of ‘Umsila’ is partially due to the balanced Na+ and K+ uptake and to the relatively high concentration of ROS-scavenging metabolites.”
t0“Date Palm”
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See all 6 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.