Abstract
Physiological responses of various rice genotypes were studied in relation to salt (NaCl) stress. Cultivars CSR‐1 and Dular germinated well in different NaCl regimes compared to cvs Rupsail, Assam Getu and M‐1–48. At 100 m M NaCl, the lowest germination was observed in cv. M‐1–48. Cvs CSR‐1 and Dular were relatively effective in maintaining high concentrations of polyamines as well as arginine decarboxylase (EC 4.1.1.19) activity in coleoptiles and roots in a non‐stressed condition. The activities of two biodegradative enzymes, diamine oxidase (EC 1.4.3.6) and polyamine oxidase (EC 1.4.3.4), were lowest in cv. CSR‐1. The polyamine content was not significantly altered when seedlings of cv. CSR‐1 were exposed to 100 m M NaCl. However, in cv. M‐1–48 enhancement of arginine decarboxylase activity with concomitant accumulation of polyamines was observed. Leakage of metabolites and changes in the levels of Na + and Cl − were prominent in cv. M‐1–48 under saline conditions. The results suggest a correlation between polyamine and salt stress‐induced responses in rice genotypes.
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Claims 8
Claim · model-written summary
Cultivars CSR‐1 and Dular maintained high polyamine concentrations and arginine decarboxylase activity in coleoptiles and roots under non-stressed conditions.
- Taxon
- rice
Oryza sativae0 - Material
- CSR‐1 and Dulare1
- Organ / stage
- coleoptiles and rootse1
- Gene
- arginine decarboxylase (EC 4.1.1.19)e1
- Outcome
- high concentrations of polyaminese1
- Qualifier
- non‐stressed conditione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“various rice genotypes”
e1“Cvs CSR‐1 and Dular were relatively effective in maintaining high concentrations of polyamines as well as arginine decarboxylase (EC 4.1.1.19) activity in coleoptiles and roots in a non‐stressed condition”
Claim · model-written summary
Diamine oxidase and polyamine oxidase activities were lowest in cv. CSR‐1.
- Taxon
- riceOryza sativae0
- Material
- cv. CSR‐1e1
- Gene
- diamine oxidase (EC 1.4.3.6) and polyamine oxidase (EC 1.4.3.4)e1
- Outcome
- activities of two biodegradative enzymese1
- Direction
- loweste1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“various rice genotypes”
e1“The activities of two biodegradative enzymes, diamine oxidase (EC 1.4.3.6) and polyamine oxidase (EC 1.4.3.4), were lowest in cv. CSR‐1”
Claim · model-written summary
The polyamine content of seedlings of cv. CSR‐1 was not significantly altered by exposure to 100 m M NaCl.
- Taxon
- riceOryza sativae0
- Material
- cv. CSR‐1e1
- Organ / stage
- seedlingse1
- Treatment
- 100 m M NaCle1
- Outcome
- polyamine contente1
- Direction
- not significantly alterede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“various rice genotypes”
e1“The polyamine content was not significantly altered when seedlings of cv. CSR‐1 were exposed to 100 m M NaCl”
Claim · model-written summary
In cv. M‐1–48, NaCl stress enhanced arginine decarboxylase activity with concomitant accumulation of polyamines.
- Taxon
- riceOryza sativae0
- Material
- cv. M‐1–48e1
- Treatment
- saline conditionse2
- Gene
- arginine decarboxylasee1
- Outcome
- arginine decarboxylase activity with concomitant accumulation of polyaminese1
- Direction
- enhancemente1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“various rice genotypes”
e1“However, in cv. M‐1–48 enhancement of arginine decarboxylase activity with concomitant accumulation of polyamines was observed”
e2“Leakage of metabolites and changes in the levels of Na + and Cl − were prominent in cv. M‐1–48 under saline conditions”
Claim · model-written summary
Leakage of metabolites and changes in Na+ and Cl− levels were prominent in cv. M‐1–48 under saline conditions.
- Taxon
- riceOryza sativae0
- Material
- cv. M‐1–48e2
- Outcome
- Leakage of metabolites and changes in the levels of Na + and Cl −e2
- Qualifier
- under saline conditionse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“various rice genotypes”
e2“Leakage of metabolites and changes in the levels of Na + and Cl − were prominent in cv. M‐1–48 under saline conditions”
Claim · model-written summary
Cultivars CSR‐1 and Dular germinated well in different NaCl regimes compared with cvs Rupsail, Assam Getu and M‐1–48.
- Taxon
- riceOryza sativae0
- Material
- CSR‐1 and Dulare3
- Treatment
- different NaCl regimese3
- Outcome
- germinatede3
- Direction
- welle3
- Comparator
- cvs Rupsail, Assam Getu and M‐1–48e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“various rice genotypes”
e3“Cultivars CSR‐1 and Dular germinated well in different NaCl regimes compared to cvs Rupsail, Assam Getu and M‐1–48”
Claim · model-written summary
At 100 m M NaCl, germination was lowest in cv. M‐1–48.
- Taxon
- riceOryza sativae0
- Material
- cv. M‐1–48e4
- Treatment
- 100 m M NaCle4
- Outcome
- germinatione4
- Direction
- loweste4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“various rice genotypes”
e4“At 100 m M NaCl, the lowest germination was observed in cv. M‐1–48”
Claim · model-written summary
The results suggest a correlation between polyamines and salt stress-induced responses in rice genotypes.
- Taxon
- riceOryza sativae0
- Compound
- polyaminee5
- Outcome
- salt stress‐induced responsese5
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“various rice genotypes”
e5“The results suggest a correlation between polyamine and salt stress‐induced responses in rice genotypes”
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