Abstract
The effects of exogenous ascorbic acid (AsA) and reduced glutathione (GSH) on antioxidant enzyme activities [superoxide dismutase (SOD), ascorbate peroxidase (APX), and glutathione reductase (GR)] and the contents of malondialdehyde (MDA) and H2O2, as well as of endogenous AsA and GSH, in the chloroplasts of two rice cultivars, the salt-tolerant cultivar Pokkali and the salt-sensitive cultivar Peta, were investigated. Exogenous AsA and GSH enhanced SOD, APX, and GR activities, increased endogenous AsA and GSH contents, and reduced those of H2O2 and MDA in the chloroplasts of both cultivars under salt stress (200 mM NaCl), but the effects were significantly more pronounced in cv. Pokkali. GSH acted more strongly than AsA on the plastidial reactive oxygen scavenging systems. These results indicated that exogenous AsA and GSH differentially enhanced salinity tolerance and alleviated salinity-induced damage in the two rice cultivars.
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Claims 9
Claim · model-written summary
Exogenous AsA enhanced SOD, APX, and GR activities in salt stressed rice.
- Taxon
- rice
Oryza sativae1 - Treatment
- Exogenous AsAe0
- Outcome
- SOD, APX, and GR activitiese0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous AsA and GSH enhanced SOD, APX, and GR activities, increased endogenous AsA and GSH contents, and reduced those of H2O2 and MDA in the chloroplasts of both cultivars under salt stress (200 mM NaCl)”
e1“the two rice cultivars”
Claim · model-written summary
Exogenous GSH enhanced SOD, APX, and GR activities.
- Taxon
- riceOryza sativae1
- Treatment
- GSHe0
- Outcome
- SOD, APX, and GR activitiese0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous AsA and GSH enhanced SOD, APX, and GR activities, increased endogenous AsA and GSH contents, and reduced those of H2O2 and MDA in the chloroplasts of both cultivars under salt stress (200 mM NaCl)”
e1“the two rice cultivars”
Claim · model-written summary
Exogenous AsA increased endogenous AsA and GSH.
- Taxon
- riceOryza sativae1
- Treatment
- Exogenous AsAe0
- Outcome
- endogenous AsA and GSH contentse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous AsA and GSH enhanced SOD, APX, and GR activities, increased endogenous AsA and GSH contents, and reduced those of H2O2 and MDA in the chloroplasts of both cultivars under salt stress (200 mM NaCl)”
e1“the two rice cultivars”
Claim · model-written summary
Exogenous GSH increased endogenous AsA and GSH.
- Taxon
- riceOryza sativae1
- Treatment
- GSHe0
- Outcome
- endogenous AsA and GSH contentse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous AsA and GSH enhanced SOD, APX, and GR activities, increased endogenous AsA and GSH contents, and reduced those of H2O2 and MDA in the chloroplasts of both cultivars under salt stress (200 mM NaCl)”
e1“the two rice cultivars”
Claim · model-written summary
Exogenous AsA reduced chloroplast H2O2 and MDA.
- Taxon
- riceOryza sativae1
- Treatment
- Exogenous AsAe0
- Outcome
- H2O2 and MDAe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous AsA and GSH enhanced SOD, APX, and GR activities, increased endogenous AsA and GSH contents, and reduced those of H2O2 and MDA in the chloroplasts of both cultivars under salt stress (200 mM NaCl)”
e1“the two rice cultivars”
Claim · model-written summary
Exogenous GSH reduced chloroplast H2O2 and MDA.
- Taxon
- riceOryza sativae1
- Treatment
- GSHe0
- Outcome
- H2O2 and MDAe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous AsA and GSH enhanced SOD, APX, and GR activities, increased endogenous AsA and GSH contents, and reduced those of H2O2 and MDA in the chloroplasts of both cultivars under salt stress (200 mM NaCl)”
e1“the two rice cultivars”
Claim · model-written summary
The effects were more pronounced in Pokkali.
- Taxon
- riceOryza sativae1
- Material
- cv. Pokkalie0
- Outcome
- effectse0
- Direction
- more pronouncede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the effects were significantly more pronounced in cv. Pokkali.”
t0“Oryza sativa L.”
e1“the two rice cultivars”
Claim · model-written summary
GSH acted more strongly than AsA on plastid reactive oxygen scavenging.
- Taxon
- riceOryza sativae1
- Treatment
- GSHe0
- Outcome
- plastidial reactive oxygen scavenging systemse0
- Direction
- more stronglye0
- Comparator
- AsAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GSH acted more strongly than AsA on the plastidial reactive oxygen scavenging systems.”
e1“the two rice cultivars”
Claim · model-written summary
The authors infer that AsA and GSH differentially improved salt tolerance and reduced damage.
- Taxon
- riceOryza sativae0
- Treatment
- exogenous AsA and GSHe0
- Outcome
- salinity tolerance and alleviated salinity-induced damagee0
- Direction
- enhancede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenous AsA and GSH differentially enhanced salinity tolerance and alleviated salinity-induced damage in the two rice cultivars.”
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See all 10 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.