Abstract
Salinity is one of the major abiotic factors that limit rice production worldwide. Previous trends show that salt concentration in rivers is increasing consistently, posing potentially adverse threats in the near future. Thus, crops currently being cultivated, particularly in small-scale farming systems, are under high threat from salinity. In this study, we investigated the mitigating effect of nitric oxide (NO) on salt stress in rice based on the assessment of changes in the transcript levels of different genes and the phenotypic response of rice genotypes. We observed that exogenously applied NO increased the expression levels of OsHIPP38, OsGR1, and OsP5CS2 in the susceptible genotype of rice, whereas in the tolerant genotype, the effect of NO was mainly in counteracting the salt-induced gene expression that diverts cellular energy for defense. Moreover, seedlings that were pretreated with NO showed high biomass production under salt stress conditions, indicating the positive role of NO against salt-induced leaf chlorosis and early senescence. The effect of NO-mediated enhancement was more pronounced in the salt tolerant genotype. Therefore, the use of NO with the integration of tolerant genes or genotypes will enhance salt tolerance levels in rice.
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Claims 8
Claim · model-written summary
Applied nitric oxide increased OsHIPP38 expression in susceptible rice.
- Taxon
- rice
Oryza sativae0 - Material
- susceptible genotypee0
- Treatment
- exogenously applied NOe0
- Gene
- OsHIPP38e0
- Outcome
- expression levelse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenously applied NO increased the expression levels of OsHIPP38, OsGR1, and OsP5CS2 in the susceptible genotype of rice”
Claim · model-written summary
Applied nitric oxide increased OsGR1 expression in susceptible rice.
- Taxon
- riceOryza sativae0
- Material
- susceptible genotypee0
- Treatment
- exogenously applied NOe0
- Gene
- OsGR1e0
- Outcome
- expression levelse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenously applied NO increased the expression levels of OsHIPP38, OsGR1, and OsP5CS2 in the susceptible genotype of rice”
Claim · model-written summary
Applied nitric oxide increased OsP5CS2 expression in susceptible rice.
- Taxon
- riceOryza sativae0
- Material
- susceptible genotypee0
- Treatment
- exogenously applied NOe0
- Gene
- OsP5CS2e0
- Outcome
- expression levelse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenously applied NO increased the expression levels of OsHIPP38, OsGR1, and OsP5CS2 in the susceptible genotype of rice”
Claim · model-written summary
In tolerant rice, nitric oxide counteracted salt-induced defense-related gene expression.
- Taxon
- riceOryza sativae1
- Material
- tolerant genotypee0
- Treatment
- NOe0
- Outcome
- salt-induced gene expressione0
- Direction
- counteractinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the tolerant genotype, the effect of NO was mainly in counteracting the salt-induced gene expression that diverts cellular energy for defense”
e1“exogenously applied NO increased the expression levels of OsHIPP38, OsGR1, and OsP5CS2 in the susceptible genotype of rice”
Claim · model-written summary
Nitric oxide pretreated seedlings had high biomass under salt stress.
- Taxon
- riceOryza sativat0
- Organ / stage
- seedlingse0
- Treatment
- pretreated with NOe0
- Outcome
- biomass productione0
- Direction
- highe0
- Qualifier
- under salt stress conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seedlings that were pretreated with NO showed high biomass production under salt stress conditions”
t0“Rice”
Claim · model-written summary
Nitric oxide pretreatment was interpreted as acting against salt-induced chlorosis and early senescence.
- Taxon
- riceOryza sativae1
- Treatment
- NOe0
- Outcome
- salt-induced leaf chlorosis and early senescencee0
- Direction
- againste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“indicating the positive role of NO against salt-induced leaf chlorosis and early senescence”
e1“exogenously applied NO increased the expression levels of OsHIPP38, OsGR1, and OsP5CS2 in the susceptible genotype of rice”
Claim · model-written summary
Nitric oxide enhancement was more pronounced in salt-tolerant rice than susceptible rice.
- Taxon
- riceOryza sativat0
- Material
- salt tolerant genotypee0
- Outcome
- NO-mediated enhancemente0
- Direction
- more pronouncede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effect of NO-mediated enhancement was more pronounced in the salt tolerant genotype.”
t0“Rice”
Claim · model-written summary
The authors propose combining nitric oxide with tolerant genes or genotypes to enhance rice salt tolerance.
- Taxon
- riceOryza sativae0
- Outcome
- use of NO with the integration of tolerant genes or genotypese0
- Direction
- enhancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the use of NO with the integration of tolerant genes or genotypes will enhance salt tolerance levels in rice”
The same questions in other papers
nitric oxide · yield · Oryza sativa (rice)Positive and negative results
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nitric oxide · molecular: expression · Oryza sativa (rice)Positive and negative results
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See all 5 papers →nitric oxide · physiology: pigments · Oryza sativa (rice)Results agree
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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.