Abstract
The effect of NaCl on the endogenous levels of diamine, putrescine and polyamines, spermidine and spermine, was studied in the shoot system of salt-tolerant and salt-sensitive lines of rice (Oryza sativa L.) cultivars during three growth stages. Salt stress increased the levels of diamine and polyamine in varying degrees among nine rice cultivars investigated. Salt tolerant AU1, Co43, and CSC1 were effective in maintaining high concentrations of spermidine and spermine, while the content of putrescine was not significantly altered in all the growth stages when plants were exposed to salinity. The salt sensitivity in rice was associated with excessive accumulation of putrescine and with low levels of spermidine and spermine in the shoot system of salt-sensitive cultivars Co36, CSC2, GR3, IR20, TKM4, and TKM9 under saline condition. One of the possible mechanisms of saline resistance was observed to be due to the highly increased polyamines against the low increase in diamines. Alternatively, the salt sensitivity could be due to high increase of diamines and an incapacity to maintain high levels of polyamines.
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Claims 7
Claim · model-written summary
Salt stress raised diamine and polyamine levels to varying degrees across nine rice cultivars.
- Taxon
- rice
Oryza sativae0 - Treatment
- Salt stresse0
- Outcome
- levels of diamine and polyaminee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt stress increased the levels of diamine and polyamine in varying degrees among nine rice cultivars investigated”
Claim · model-written summary
Salt tolerant AU1, Co43 and CSC1 maintained high spermidine and spermine concentrations under salinity.
- Taxon
- RiceOryza sativat0
- Material
- AU1, Co43, and CSC1e0
- Outcome
- concentrations of spermidine and sperminee0
- Direction
- highe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt tolerant AU1, Co43, and CSC1 were effective in maintaining high concentrations of spermidine and spermine”
t0“Rice Cultivars”
Claim · model-written summary
Putrescine content did not change significantly across growth stages in salt tolerant rice under salinity.
- Taxon
- RiceOryza sativat0
- Treatment
- salinitye0
- Outcome
- content of putrescinee0
- Direction
- not significantly alterede0
- Qualifier
- all the growth stagese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the content of putrescine was not significantly altered in all the growth stages when plants were exposed to salinity”
t0“Rice Cultivars”
Claim · model-written summary
Salt sensitivity was associated with excessive putrescine accumulation in sensitive rice cultivars under salinity.
- Taxon
- riceOryza sativae0
- Material
- Co36, CSC2, GR3, IR20, TKM4, and TKM9e0
- Organ / stage
- shoot systeme0
- Compound
- putrescinee0
- Outcome
- salt sensitivitye0
- Direction
- excessive accumulatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“salt sensitivity in rice was associated with excessive accumulation of putrescine and with low levels of spermidine and spermine in the shoot system of salt-sensitive cultivars Co36, CSC2, GR3, IR20, TKM4, and TKM9 under saline condition”
Claim · model-written summary
Salt sensitivity was associated with low spermidine and spermine levels in shoots of sensitive rice cultivars under salinity.
- Taxon
- riceOryza sativae0
- Material
- Co36, CSC2, GR3, IR20, TKM4, and TKM9e0
- Organ / stage
- shoot systeme0
- Compound
- spermidine and sperminee0
- Outcome
- salt sensitivitye0
- Direction
- low levelse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“salt sensitivity in rice was associated with excessive accumulation of putrescine and with low levels of spermidine and spermine in the shoot system of salt-sensitive cultivars Co36, CSC2, GR3, IR20, TKM4, and TKM9 under saline condition”
Claim · model-written summary
The authors propose that a large polyamine increase relative to diamines can contribute to salt resistance.
- Taxon
- RiceOryza sativat0
- Outcome
- saline resistancee0
- Qualifier
- highly increased polyamines against the low increase in diaminese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“One of the possible mechanisms of saline resistance was observed to be due to the highly increased polyamines against the low increase in diamines”
t0“Rice Cultivars”
Claim · model-written summary
The authors propose that increased diamines and failure to sustain polyamines can contribute to salt sensitivity.
- Taxon
- RiceOryza sativat0
- Outcome
- salt sensitivitye0
- Qualifier
- high increase of diamines and an incapacity to maintain high levels of polyaminese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the salt sensitivity could be due to high increase of diamines and an incapacity to maintain high levels of polyamines”
t0“Rice Cultivars”
The same questions in other papers
salinity · molecular: metabolites · Oryza sativa (rice)Positive and negative results
39 papers in the same direction as this paper · 24 in the opposite direction
- positive
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See all 64 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.