Abstract
Salt stress-induced changes in antioxidant enzymes, such as catalase (CAT), ascorbate peroxidase (APX), and glutathione reductase (GR), total chlorophyll content, and lipid peroxidation measured as malondialdehyde (MDA) content, in leaves of a green bean genotype Gevas sirsk 57 (GS57) and cv. Fransiz 4F-89 differing in salt tolerance were investigated. Plants were subjected to three salt treatments (0, 50, and 100 mM NaCl) under controlled climatic conditions for 7 days. The salt-sensitive cv. 4F-89 exhibited a decrease in GR activity at all salt treatments, but the salt-tolerant genotype GS57 showed only a slight decrease in GR under 50 mM salt treatment and an increase under 100 mM salt treatment. CAT and APX activities increased with increasing salt stress in both varieties. CAT and APX activities were higher in the salt-tolerant GS57 than salt-ensitive cv. 4F-89. The two varieties showed an increase in MDA content with an increase in salinity, but the increase in sensitive cv. 4F-89 under salt stress was higher than that in salt-tolerant GS57 genotype. The increasing NaCl concentration caused a reduction in the chlorophyll content in cv. 4F-89 but not in GS57.
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Claims 9
Claim · model-written summary
Salt-sensitive 4F-89 showed decreased GR activity at all salt treatments.
- Taxon
- green beant0
- Material
- 4F-89e0
- Treatment
- salt treatmentse0
- Gene
- GRe0
- Outcome
- GR activitye0
- Direction
- decreasee0
Not reportedComparator
Verbatim
e0“salt-sensitive cv. 4F-89 exhibited a decrease in GR activity at all salt treatments”
t0“green bean”
Claim · model-written summary
GS57 had a slight GR decrease at 50 mM salt.
- Taxon
- green beant0
- Material
- GS57e0
- Treatment
- 50 mM salt treatmente0
- Gene
- GRe0
- Outcome
- GRe0
- Direction
- decreasee0
Not reportedComparator
Verbatim
e0“salt-tolerant genotype GS57 showed only a slight decrease in GR under 50 mM salt treatment”
t0“green bean”
Claim · model-written summary
GS57 increased GR activity at 100 mM salt.
Not reportedComparator
Verbatim
e0“the salt-tolerant genotype GS57 showed only a slight decrease in GR under 50 mM salt treatment and an increase under 100 mM salt treatment”
t0“green bean”
Claim · model-written summary
CAT and APX activities increased with salinity in both varieties.
Verbatim
e0“CAT and APX activities increased with increasing salt stress in both varieties”
t0“green bean”
Claim · model-written summary
CAT and APX activities were higher in GS57 than 4F-89.
Verbatim
e0“CAT and APX activities were higher in the salt-tolerant GS57 than salt-ensitive cv. 4F-89”
t0“green bean”
Claim · model-written summary
MDA content increased with salinity in both varieties.
Verbatim
e0“The two varieties showed an increase in MDA content with an increase in salinity”
t0“green bean”
Claim · model-written summary
The salt-induced MDA increase was higher in 4F-89 than GS57.
Verbatim
e0“The two varieties showed an increase in MDA content with an increase in salinity, but the increase in sensitive cv. 4F-89 under salt stress was higher than that in salt-tolerant GS57 genotype”
t0“green bean”
Claim · model-written summary
Increasing NaCl reduced chlorophyll in 4F-89.
- Taxon
- green beant0
- Material
- 4F-89e0
- Treatment
- increasing NaCl concentratione0
- Outcome
- chlorophyll contente0
- Direction
- reductione0
Not reportedComparator
Verbatim
e0“increasing NaCl concentration caused a reduction in the chlorophyll content in cv. 4F-89”
t0“green bean”
Claim · model-written summary
Increasing NaCl did not reduce chlorophyll in GS57.
- Taxon
- green beant0
- Material
- GS57e0
- Treatment
- increasing NaCl concentratione0
- Outcome
- chlorophyll contente0
- Direction
- no_changeinferrede0
Not reportedComparator
Verbatim
e0“The increasing NaCl concentration caused a reduction in the chlorophyll content in cv. 4F-89 but not in GS57”
t0“green bean”
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