Abstract
To find the protective role of exogenous nitric oxide (NO) on salinity-stressed rice seedlings, a CRD-based factorial experiment with three replications was conducted in Agronomy Laboratory of the Faculty of Agricultural Sciences, University of Guilan, in 2012. The experimental design consisted of healthy and vigorous seedlings of two rice cultivars, Khazar and Goohar, the last already known as promising SA13 line, which were exposed to 0 (Control), 50 mM NaCl, 50 μM sodium nitroprusside (SNP) as NO donor solution supplemented with simultaneous 50 mM NaCl + 50 μM SNP for four days. After 4 days, electrolyte leakage and malondialdehyde (MDA) content, activities of antioxidant enzyme, destruction of chlorophyll and soluble protein content in leaves were measured in treated and control plants. The results showed that simultaneous treatment of rice leaves with SNP, suppressed the ion leakage content by 8.5% compared with the results of NaCl treatment. Furthermore, SNP increased the activities of superoxide dismutase (SOD), peroxidase (POD), ascorbate peroxidase (APX) and catalase (CAT). Exogenous application of NO also reduced peroxidation of membrane lipids, whereas increased the soluble protein content and chlorophyll pigments in rice leaves under salinity stress. These results suggested that NO could effectively protect rice seedlings from salt stress damaged by enhancing activities of antioxidant enzymes to quench the excessive reactive oxygen species caused by salt stress.
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Claims 9
Claim · model-written summary
SNP with salinity suppressed rice leaf ion leakage by 8.5% versus NaCl alone.
- Taxon
- rice
Oryza sativae0 - Organ / stage
- leavese0
- Treatment
- SNPe0
- Outcome
- ion leakage contente0
- Direction
- suppressede0
- Value
- 8.5%e0
- Comparator
- NaCl treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that simultaneous treatment of rice leaves with SNP, suppressed the ion leakage content by 8.5% compared with the results of NaCl treatment.”
Claim · model-written summary
SNP increased rice superoxide dismutase (SOD) activity.
- Taxon
- riceOryza sativat0
- Treatment
- SNPe0
- Gene
- superoxide dismutase (SOD)e0
- Outcome
- activitiese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Furthermore, SNP increased the activities of superoxide dismutase (SOD), peroxidase (POD), ascorbate peroxidase (APX) and catalase (CAT).”
t0“rice (Oryza sativa L.) seedlings”
Claim · model-written summary
SNP increased rice peroxidase (POD) activity.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Furthermore, SNP increased the activities of superoxide dismutase (SOD), peroxidase (POD), ascorbate peroxidase (APX) and catalase (CAT).”
t0“rice (Oryza sativa L.) seedlings”
Claim · model-written summary
SNP increased rice ascorbate peroxidase (APX) activity.
- Taxon
- riceOryza sativat0
- Treatment
- SNPe0
- Gene
- ascorbate peroxidase (APX)e0
- Outcome
- activitiese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Furthermore, SNP increased the activities of superoxide dismutase (SOD), peroxidase (POD), ascorbate peroxidase (APX) and catalase (CAT).”
t0“rice (Oryza sativa L.) seedlings”
Claim · model-written summary
SNP increased rice catalase (CAT) activity.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Furthermore, SNP increased the activities of superoxide dismutase (SOD), peroxidase (POD), ascorbate peroxidase (APX) and catalase (CAT).”
t0“rice (Oryza sativa L.) seedlings”
Claim · model-written summary
Exogenous NO reduced rice leaf peroxidation of membrane lipids under salinity stress.
- Taxon
- riceOryza sativae0
- Organ / stage
- leavese0
- Treatment
- Exogenous application of NOe0
- Outcome
- peroxidation of membrane lipidse0
- Direction
- reducede0
- Qualifier
- under salinity stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous application of NO also reduced peroxidation of membrane lipids, whereas increased the soluble protein content and chlorophyll pigments in rice leaves under salinity stress.”
Claim · model-written summary
Exogenous NO increased rice leaf soluble protein content under salinity stress.
- Taxon
- riceOryza sativae0
- Organ / stage
- leavese0
- Treatment
- Exogenous application of NOe0
- Outcome
- soluble protein contente0
- Direction
- increasede0
- Qualifier
- under salinity stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous application of NO also reduced peroxidation of membrane lipids, whereas increased the soluble protein content and chlorophyll pigments in rice leaves under salinity stress.”
Claim · model-written summary
Exogenous NO increased rice leaf chlorophyll pigments under salinity stress.
- Taxon
- riceOryza sativae0
- Organ / stage
- leavese0
- Treatment
- Exogenous application of NOe0
- Outcome
- chlorophyll pigmentse0
- Direction
- increasede0
- Qualifier
- under salinity stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous application of NO also reduced peroxidation of membrane lipids, whereas increased the soluble protein content and chlorophyll pigments in rice leaves under salinity stress.”
Claim · model-written summary
The authors infer that NO may protect rice seedlings from salt stress by enhancing antioxidant enzymes.
- Taxon
- riceOryza sativae0
- Treatment
- NOe0
- Outcome
- protect rice seedlings from salt stress damagede0
- Qualifier
- enhancing activities of antioxidant enzymese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These results suggested that NO could effectively protect rice seedlings from salt stress damaged by enhancing activities of antioxidant enzymes to quench the excessive reactive oxygen species caused by salt stress.”
The same questions in other papers
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- negative
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nitric oxide · physiology: pigments · Oryza sativa (rice)Results agree
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- positive
- positive
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See all 5 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.