Abstract
The objective of this study was to relate the activation of enzymatic antioxidant system to the production of reactive oxygen species induced by salt stress. Rice (Oryza sativa L.) genotypes BRS Bojuru and BRS Pampa, tolerant and sensitive to salinity, respectively, were subjected to 150 mM NaCl for 0, 6, 24, 48, and 72 h. A significant increase of superoxide anion and H2O2 and a decrease in malondialdehyde (MDA) content were observed in the tolerant genotype, whereas in the sensitive genotype, there was no change in superoxide anion content, reduced H2O2 content, and increased MDA content. The superoxide dismutase (SOD) activity increased significantly in both genotypes, and increases in amounts of transcript were observed for OsSOD3Cu/Zn and OsSODA1-Mn in the tolerant genotype and for OsSOD4-Cu/Zn, OsSOD3-Cu/Zn, OsSODCc1-Cu/Zn, OsSOD-Fe, and OsSODA1-Mn in the sensitive genotype. The activities of catalase (CAT), ascorbate peroxidase (APX), and glutathione reductase (GR) were not significantly and consistently changed, but OsCATA, OsAPX2 and OsGR1 were induced in both genotypes. OsCATB transcription was increased in the tolerant genotype and OsCATC and OsAPX3 in the sensitive genotype under salinity. It is concluded that OsAPX3, OsGR2, OsGR3, and OsSOD3-Cu/Zn genes are the most suitable to distinguish tolerant from sensitive genotypes under salt stress.
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Claims 14
Claim · model-written summary
In tolerant rice, superoxide anion increased significantly under salt stress.
- Taxon
- Rice
Oryza sativat0 - Material
- tolerant genotypee0
- Treatment
- salinity stresst0
- Outcome
- superoxide anione0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A significant increase of superoxide anion and H2O2 and a decrease in malondialdehyde (MDA) content were observed in the tolerant genotype”
t0“rice plants exposed to salinity stress”
Claim · model-written summary
In tolerant rice, H2O2 increased significantly under salt stress.
- Taxon
- riceOryza sativat0
- Material
- tolerant genotypee0
- Treatment
- salinity stresst0
- Outcome
- H2O2e0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A significant increase of superoxide anion and H2O2 and a decrease in malondialdehyde (MDA) content were observed in the tolerant genotype”
t0“rice plants exposed to salinity stress”
Claim · model-written summary
In tolerant rice, malondialdehyde content decreased.
- Taxon
- riceOryza sativat0
- Material
- tolerant genotypee0
- Treatment
- salinity stresst0
- Outcome
- malondialdehyde (MDA) contente0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A significant increase of superoxide anion and H2O2 and a decrease in malondialdehyde (MDA) content were observed in the tolerant genotype”
t0“rice plants exposed to salinity stress”
Claim · model-written summary
In sensitive rice, superoxide anion content did not change.
- Taxon
- riceOryza sativat0
- Material
- sensitive genotypee0
- Treatment
- salinity stresst0
- Outcome
- superoxide anion contente0
- Direction
- no changee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the sensitive genotype, there was no change in superoxide anion content, reduced H2O2 content, and increased MDA content.”
t0“rice plants exposed to salinity stress”
Claim · model-written summary
In sensitive rice, H2O2 content fell.
- Taxon
- riceOryza sativat0
- Material
- sensitive genotypee0
- Treatment
- salinity stresst0
- Outcome
- H2O2 contente0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the sensitive genotype, there was no change in superoxide anion content, reduced H2O2 content, and increased MDA content.”
t0“rice plants exposed to salinity stress”
Claim · model-written summary
In sensitive rice, MDA content increased.
- Taxon
- riceOryza sativat0
- Material
- sensitive genotypee0
- Treatment
- salinity stresst0
- Outcome
- MDA contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the sensitive genotype, there was no change in superoxide anion content, reduced H2O2 content, and increased MDA content.”
t0“rice plants exposed to salinity stress”
Claim · model-written summary
SOD activity increased significantly in both rice genotypes.
- Taxon
- riceOryza sativat0
- Treatment
- salinity stresst0
- Outcome
- superoxide dismutase (SOD) activitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The superoxide dismutase (SOD) activity increased significantly in both genotypes”
t0“rice plants exposed to salinity stress”
Claim · model-written summary
OsSOD3Cu/Zn and OsSODA1-Mn transcripts increased in the tolerant genotype.
- Taxon
- riceOryza sativat0
- Material
- tolerant genotypee0
- Gene
- OsSOD3Cu/Zn and OsSODA1-Mne0
- Outcome
- amounts of transcripte0
- Direction
- increasese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increases in amounts of transcript were observed for OsSOD3Cu/Zn and OsSODA1-Mn in the tolerant genotype”
t0“rice plants exposed to salinity stress”
Claim · model-written summary
Five SOD transcripts increased in the sensitive genotype.
- Taxon
- riceOryza sativat0
- Material
- sensitive genotypee0
- Gene
- OsSOD4-Cu/Zn, OsSOD3-Cu/Zn, OsSODCc1-Cu/Zn, OsSOD-Fe, and OsSODA1-Mne0
- Outcome
- amounts of transcripte0
- Direction
- increasese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increases in amounts of transcript were observed for OsSOD3Cu/Zn and OsSODA1-Mn in the tolerant genotype and for OsSOD4-Cu/Zn, OsSOD3-Cu/Zn, OsSODCc1-Cu/Zn, OsSOD-Fe, and OsSODA1-Mn in the sensitive genotype”
t0“rice plants exposed to salinity stress”
Claim · model-written summary
CAT, APX and GR activities did not change significantly and consistently.
- Taxon
- riceOryza sativat0
- Outcome
- activities of catalase (CAT), ascorbate peroxidase (APX), and glutathione reductase (GR)e0
- Direction
- not significantly and consistently changede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The activities of catalase (CAT), ascorbate peroxidase (APX), and glutathione reductase (GR) were not significantly and consistently changed”
t0“rice plants exposed to salinity stress”
Claim · model-written summary
OsCATA, OsAPX2 and OsGR1 were induced in both genotypes.
- Taxon
- riceOryza sativat0
- Gene
- OsCATA, OsAPX2 and OsGR1e0
- Outcome
- OsCATA, OsAPX2 and OsGR1 were inducede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“OsCATA, OsAPX2 and OsGR1 were induced in both genotypes.”
t0“rice plants exposed to salinity stress”
Claim · model-written summary
OsCATB transcription increased in the tolerant genotype.
- Taxon
- riceOryza sativat0
- Material
- tolerant genotypee0
- Gene
- OsCATBe0
- Outcome
- OsCATB transcriptione0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“OsCATB transcription was increased in the tolerant genotype”
t0“rice plants exposed to salinity stress”
Claim · model-written summary
OsCATC and OsAPX3 transcription increased in the sensitive genotype.
- Taxon
- riceOryza sativat0
- Material
- sensitive genotypee0
- Gene
- OsCATC and OsAPX3e0
- Outcome
- OsCATC and OsAPX3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“OsCATC and OsAPX3 in the sensitive genotype under salinity.”
t0“rice plants exposed to salinity stress”
Claim · model-written summary
Four genes were judged most suitable to distinguish salt-tolerant and sensitive genotypes.
- Taxon
- riceOryza sativat0
- Gene
- OsAPX3, OsGR2, OsGR3, and OsSOD3-Cu/Zne0
- Outcome
- most suitable to distinguish tolerant from sensitive genotypese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It is concluded that OsAPX3, OsGR2, OsGR3, and OsSOD3-Cu/Zn genes are the most suitable to distinguish tolerant from sensitive genotypes under salt stress.”
t0“rice plants exposed to salinity stress”
The same questions in other papers
salinity · physiology: oxidative · Oryza sativa (rice)Results differ
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