Abstract
ABSTRACT The effect of increasing sodium chloride (NaCl; 0 to 300 mM) stress was investigated on plant growth, mineral nutrients, and proline accumulation in two indica rice cultivars differing in salt tolerance. The shoots and roots of 'Karjat-3' (salt sensitive cv.) showed greater reduction in fresh weight, dry weight, and water content under increasing salinity stress when compared to 'Panvel-3' (salt tolerant cv.). The magnitude of chloride (Cl) accumulation with increasing salinity varied between cultivars, with lesser accumulation in 'Panvel-3', whereas, calcium (Ca) content was more in 'Panvel-3' than 'Karjat-3' at all salinity levels. Increase in shoot-sodium (Na) did not show notable variation between cultivars under salinity stress; however, Na accumulation was notably lower in roots of 'Panvel-3' than 'Karjat-3'. Under increasing salinity stress, 'Panvel-3' maintained significantly lower sodium/potassium, sodium/calcium and sodium/nitrogen ratios than 'Karjat-3', both in shoots and roots, with more differential response in roots. Regardless of treatment, proline concentration was considerably higher in 'Panvel-3' than in 'Karjat-3'. The salt tolerance of cv. 'Panvel-3' was positively correlated with better growth, higher proline accumulation and enhanced uptakes of beneficial minerals such as potassium (K) and Ca. Keywords: indica ricemineral nutrientsprolinesalt stresssodium/potassium ratiosodium/calcium ratio ACKNOWLEDGMENTS This work was supported by grant from Board of Research in Nuclear Sciences, Department of Atomic Energy, Government of India (Grant No. 2004/37/28/BRNS) to MGS and research fellowship to the first author. The authors also acknowledge the facilities used for this work at the Department of Botany, University of Pune created under UGC-ASIST and UGC-DRS-SAP programs.
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Claims 10
Claim · model-written summary
Karjat-3 shoots and roots suffered greater reductions in fresh weight, dry weight and water content than Panvel-3 under increasing salinity.
- Taxon
- indica rice
Oryza sativa Indica Groupe1 - Material
- Karjat-3e0
- Organ / stage
- shoots and rootse0
- Treatment
- increasing salinity stresse0
- Outcome
- fresh weight, dry weight, and water contente0
- Direction
- greater reductione0
- Comparator
- Panvel-3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The shoots and roots of 'Karjat-3' (salt sensitive cv.) showed greater reduction in fresh weight, dry weight, and water content under increasing salinity stress when compared to 'Panvel-3' (salt tolerant cv.).”
e1“two indica rice cultivars differing in salt tolerance”
Claim · model-written summary
Panvel-3 accumulated less chloride with increasing salinity than the other cultivar.
- Taxon
- indica riceOryza sativa Indica Groupe1
- Material
- Panvel-3e0
- Treatment
- increasing salinitye0
- Outcome
- chloride (Cl) accumulatione0
- Direction
- lesser accumulatione0
- Comparator
- Karjat-3e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The magnitude of chloride (Cl) accumulation with increasing salinity varied between cultivars, with lesser accumulation in 'Panvel-3'”
e1“two indica rice cultivars differing in salt tolerance”
e2“than 'Karjat-3' at all salinity levels”
Claim · model-written summary
Panvel-3 had more calcium than Karjat-3 at every salinity level.
- Taxon
- indica riceOryza sativa Indica Groupe1
- Material
- Panvel-3e0
- Outcome
- calcium (Ca) contente0
- Direction
- moree0
- Qualifier
- at all salinity levelse0
- Comparator
- Karjat-3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“calcium (Ca) content was more in 'Panvel-3' than 'Karjat-3' at all salinity levels”
e1“two indica rice cultivars differing in salt tolerance”
Claim · model-written summary
Shoot sodium increases did not vary notably between cultivars under salinity.
- Taxon
- indica riceOryza sativa Indica Groupe1
- Treatment
- salinity stresse0
- Outcome
- shoot-sodium (Na)e0
- Direction
- did not show notable variatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increase in shoot-sodium (Na) did not show notable variation between cultivars under salinity stress”
e1“two indica rice cultivars differing in salt tolerance”
Claim · model-written summary
Root sodium accumulation was notably lower in Panvel-3 than Karjat-3.
- Taxon
- indica riceOryza sativa Indica Groupe1
- Material
- Panvel-3e0
- Organ / stage
- rootse0
- Outcome
- Na accumulatione0
- Direction
- notably lowere0
- Comparator
- Karjat-3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Na accumulation was notably lower in roots of 'Panvel-3' than 'Karjat-3'”
e1“two indica rice cultivars differing in salt tolerance”
Claim · model-written summary
Panvel-3 maintained significantly lower sodium/potassium, sodium/calcium and sodium/nitrogen ratios than Karjat-3 in shoots and roots under increasing salinity.
- Taxon
- indica riceOryza sativa Indica Groupe1
- Material
- Panvel-3e0
- Organ / stage
- shoots and rootse0
- Treatment
- increasing salinity stresse0
- Outcome
- sodium/potassium, sodium/calcium and sodium/nitrogen ratiose0
- Direction
- lowere0
- Qualifier
- with more differential response in rootse0
- Comparator
- Karjat-3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under increasing salinity stress, 'Panvel-3' maintained significantly lower sodium/potassium, sodium/calcium and sodium/nitrogen ratios than 'Karjat-3', both in shoots and roots, with more differential response in roots.”
e1“two indica rice cultivars differing in salt tolerance”
Claim · model-written summary
Panvel-3 proline concentration was considerably higher than Karjat-3 regardless of treatment.
- Taxon
- indica riceOryza sativa Indica Groupe1
- Material
- Panvel-3e0
- Outcome
- proline concentratione0
- Direction
- considerably highere0
- Qualifier
- Regardless of treatmente0
- Comparator
- Karjat-3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Regardless of treatment, proline concentration was considerably higher in 'Panvel-3' than in 'Karjat-3'.”
e1“two indica rice cultivars differing in salt tolerance”
Claim · model-written summary
Panvel-3 salt tolerance was positively correlated with better growth.
- Taxon
- indica riceOryza sativa Indica Groupe1
- Material
- Panvel-3e0
- Outcome
- growthe0
- Direction
- bettere0
- Comparator
- salt tolerancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The salt tolerance of cv. 'Panvel-3' was positively correlated with better growth, higher proline accumulation and enhanced uptakes of beneficial minerals such as potassium (K) and Ca.”
e1“two indica rice cultivars differing in salt tolerance”
Claim · model-written summary
Panvel-3 salt tolerance was positively correlated with higher proline accumulation.
- Taxon
- indica riceOryza sativa Indica Groupe1
- Material
- Panvel-3e0
- Outcome
- proline accumulatione0
- Direction
- highere0
- Comparator
- salt tolerancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The salt tolerance of cv. 'Panvel-3' was positively correlated with better growth, higher proline accumulation and enhanced uptakes of beneficial minerals such as potassium (K) and Ca.”
e1“two indica rice cultivars differing in salt tolerance”
Claim · model-written summary
Panvel-3 salt tolerance was positively correlated with enhanced potassium and calcium uptake.
- Taxon
- indica riceOryza sativa Indica Groupe1
- Material
- Panvel-3e0
- Outcome
- uptakes of beneficial minerals such as potassium (K) and Cae0
- Direction
- enhancede0
- Comparator
- salt tolerancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The salt tolerance of cv. 'Panvel-3' was positively correlated with better growth, higher proline accumulation and enhanced uptakes of beneficial minerals such as potassium (K) and Ca.”
e1“two indica rice cultivars differing in salt tolerance”
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See all 296 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.