Abstract
Rice (Oryza sativa L.) is one of the major grain cereals of the Indian subcontinent which face water-deficit stress for their cultivation. Seed-priming has been reported to be a useful approach to complement stress responses in plants. In the present study, seed-priming with hormonal or chemical elicitor [viz. methyl jasmonate (MJ), salicylic acid (SA), paclobutrazol (PB)] showed significant increase in total phenolic content, antioxidant activity and expression of Rice Drought-responsive (RD1 and RD2) genes (of AP2/ERF family) in contrasting rice genotypes (Nagina-22, drought-tolerant and Pusa Sugandh-5, drought-sensitive) under drought stress. However, decrease in lipid peroxidation and protein oxidation was observed not only under the stress but also under control condition in the plants raised from primed seeds. Expression analyses of RD1 and RD2 genes showed upregulated expression in the plants raised from primed seeds under drought stress. Moreover, the RD2 gene and the drought-sensitive genotype showed better response than that of the RD1 gene and the drought-tolerant genotype in combating the effects of drought stress. Among the elicitors, MJ was found to be the most effective for seed-priming, followed by PB and SA. Growth and development of the plants raised from primed seeds were found to be better under control and drought stress conditions compared to that of the plants raised from unprimed seeds under the stress. The present study suggests that seed-priming could be one of the useful approaches to be explored towards the development of simple, cost-effective and farmer-friendly technology to enhance rice yield in rainfed areas.
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Claims 11
Claim · model-written summary
Elicitor seed priming significantly increased total phenolic content under drought stress.
- Taxon
- Rice (Oryza sativa L.)
Oryza sativat0 - Treatment
- seed-priming with hormonal or chemical elicitore0
- Outcome
- total phenolic contente0
- Direction
- increasee0
- Qualifier
- under drought stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seed-priming with hormonal or chemical elicitor [viz. methyl jasmonate (MJ), salicylic acid (SA), paclobutrazol (PB)] showed significant increase in total phenolic content, antioxidant activity and expression of Rice Drought-responsive (RD1 and RD2) genes (of AP2/ERF family) in contrasting rice genotypes (Nagina-22, drought-tolerant and Pusa Sugandh-5, drought-sensitive) under drought stress”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
Elicitor seed priming significantly increased antioxidant activity under drought stress.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Treatment
- seed-priming with hormonal or chemical elicitore0
- Outcome
- antioxidant activitye0
- Direction
- increasee0
- Qualifier
- under drought stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seed-priming with hormonal or chemical elicitor [viz. methyl jasmonate (MJ), salicylic acid (SA), paclobutrazol (PB)] showed significant increase in total phenolic content, antioxidant activity and expression of Rice Drought-responsive (RD1 and RD2) genes (of AP2/ERF family) in contrasting rice genotypes (Nagina-22, drought-tolerant and Pusa Sugandh-5, drought-sensitive) under drought stress”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
Elicitor seed priming increased RD1 and RD2 gene expression under drought stress.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Treatment
- seed-priming with hormonal or chemical elicitore0
- Gene
- RD1 and RD2e0
- Outcome
- expression of Rice Drought-responsive (RD1 and RD2) genese0
- Direction
- increasee0
- Qualifier
- under drought stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seed-priming with hormonal or chemical elicitor [viz. methyl jasmonate (MJ), salicylic acid (SA), paclobutrazol (PB)] showed significant increase in total phenolic content, antioxidant activity and expression of Rice Drought-responsive (RD1 and RD2) genes (of AP2/ERF family) in contrasting rice genotypes (Nagina-22, drought-tolerant and Pusa Sugandh-5, drought-sensitive) under drought stress”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
Seed priming decreased lipid peroxidation under stress and control conditions.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Treatment
- primed seedse0
- Outcome
- lipid peroxidatione0
- Direction
- decreasee0
- Qualifier
- not only under the stress but also under control conditione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decrease in lipid peroxidation and protein oxidation was observed not only under the stress but also under control condition in the plants raised from primed seeds”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
Seed priming decreased protein oxidation under stress and control conditions.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Treatment
- primed seedse0
- Outcome
- protein oxidatione0
- Direction
- decreasee0
- Qualifier
- not only under the stress but also under control conditione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decrease in lipid peroxidation and protein oxidation was observed not only under the stress but also under control condition in the plants raised from primed seeds”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
RD2 responded more strongly than RD1 to seed priming under drought stress.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Gene
- RD2 genee0
- Outcome
- better responsee0
- Direction
- bettere0
- Comparator
- RD1 genee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the RD2 gene and the drought-sensitive genotype showed better response than that of the RD1 gene and the drought-tolerant genotype in combating the effects of drought stress”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
The drought-sensitive genotype responded better than the drought-tolerant genotype.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Material
- drought-sensitive genotypee0
- Outcome
- better responsee0
- Direction
- bettere0
- Comparator
- drought-tolerant genotypee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the RD2 gene and the drought-sensitive genotype showed better response than that of the RD1 gene and the drought-tolerant genotype in combating the effects of drought stress”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
Methyl jasmonate was the most effective priming elicitor.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Treatment
- MJe0
- Outcome
- most effectivee0
- Direction
- most effectivee0
- Comparator
- PB and SAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Among the elicitors, MJ was found to be the most effective for seed-priming, followed by PB and SA”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
Paclobutrazol ranked ahead of salicylic acid as a seed priming elicitor.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Treatment
- PBe0
- Outcome
- followed by PB and SAe0
- Direction
- followede0
- Comparator
- SAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Among the elicitors, MJ was found to be the most effective for seed-priming, followed by PB and SA”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
Seed priming improved growth and development under control and drought conditions relative to unprimed stressed plants.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Treatment
- primed seedse0
- Outcome
- Growth and developmente0
- Direction
- bettere0
- Qualifier
- under control and drought stress conditionse0
- Comparator
- unprimed seeds under the stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth and development of the plants raised from primed seeds were found to be better under control and drought stress conditions compared to that of the plants raised from unprimed seeds under the stress”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
The authors suggest seed priming as a technology to enhance rice yield in rainfed areas.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Treatment
- seed-priminge0
- Outcome
- enhance rice yield in rainfed arease0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seed-priming could be one of the useful approaches to be explored towards the development of simple, cost-effective and farmer-friendly technology to enhance rice yield in rainfed areas”
t0“Rice (Oryza sativa L.)”
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