Abstract
BACKGROUND: Safflower (Carthamus tinctorius L.) has gained considerable ground as a potential oil-seed crop. However, its yield and oil production are adversely affected under saline conditions. The present study was conducted to appraise the influence of salt (NaCl) stress on yield, accumulation of different inorganic elements, free proline and activities of some key antioxidant enzymes in plant tissues as well as seed oil components in safflower. Two safflower accessions differing in salt tolerance (Safflower-33 (salt sensitive) and Safflower-39 (salt tolerant)) were grown under saline (150 mmol L(-1) ) conditions and salt-induced changes in the earlier-mentioned physiological attributes were determined. RESULTS: Salt stress enhanced leaf and root Na(+) , Cl(-) and proline accumulation and activities of leaf superoxide dismutase, catalase and peroxidase, while it decreased K(+) , Ca(2+) and K(+) /Ca(2+) and Ca(2+) /Na(+) ratios and seed yield, 100-seed weight, number of seeds, as well as capitula, seed oil contents and oil palmitic acid. No significant effect of salt stress was observed on seed oil α-tocopherols, stearic acid, oleic acid or linoleic acid contents. Of the two safflower lines, salt-sensitive Safflower-33 was higher in leaf and root Na(+) and Cl(-) , while Safflower-39 was higher in leaf and root K(+) , K(+) /Ca(2+) and Ca(2+) /Na(+) and seed yield, 100-seed weight, catalase activity, seed oil contents, seed oil α-tocopherol and palmitic acid. Other attributes remained almost unaffected in both accessions. CONCLUSION: Overall, high salt tolerance of Safflower-39 could be attributed to Na(+) and Cl(-) exclusion, high accumulation of K(+) and free proline, enhanced CAT activity, seed oil α-tocopherols and palmitic acid contents.
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Claims 9
Claim · model-written summary
Salt increased leaf and root sodium, chloride and proline accumulation.
- Taxon
- Safflower
Carthamus tinctoriust0 - Treatment
- Salt stresse0
- Outcome
- leaf and root Na(+) , Cl(-) and proline accumulatione0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt stress enhanced leaf and root Na(+) , Cl(-) and proline accumulation”
t0“Safflower”
Claim · model-written summary
Salt raised leaf superoxide dismutase, catalase and peroxidase activities.
- Taxon
- SafflowerCarthamus tinctoriust0
- Treatment
- Salt stresse1
- Outcome
- activities of leaf superoxide dismutase, catalase and peroxidasee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“activities of leaf superoxide dismutase, catalase and peroxidase”
t0“Safflower”
e1“Salt stress enhanced leaf and root Na(+) , Cl(-) and proline accumulation”
Claim · model-written summary
Salt lowered potassium, calcium and their ion ratios.
- Taxon
- SafflowerCarthamus tinctoriust0
- Treatment
- salt stresse1
- Outcome
- K(+) , Ca(2+) and K(+) /Ca(2+) and Ca(2+) /Na(+) ratiose0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it decreased K(+) , Ca(2+) and K(+) /Ca(2+) and Ca(2+) /Na(+) ratios”
t0“Safflower”
e1“Salt stress enhanced leaf and root Na(+) , Cl(-) and proline accumulation”
Claim · model-written summary
Salt reduced seed yield, 100-seed weight, seed number and capitula.
- Taxon
- SafflowerCarthamus tinctoriust0
- Treatment
- salt stresse1
- Outcome
- seed yield, 100-seed weight, number of seeds, as well as capitulae0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seed yield, 100-seed weight, number of seeds, as well as capitula”
t0“Safflower”
e1“Salt stress enhanced leaf and root Na(+) , Cl(-) and proline accumulation”
Claim · model-written summary
Salt reduced seed oil content and palmitic acid.
- Taxon
- SafflowerCarthamus tinctoriust0
- Treatment
- salt stresse1
- Outcome
- seed oil contents and oil palmitic acide0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seed oil contents and oil palmitic acid”
t0“Safflower”
e1“Salt stress enhanced leaf and root Na(+) , Cl(-) and proline accumulation”
Claim · model-written summary
Salt had no significant effect on seed oil tocopherols, stearic, oleic or linoleic acids.
- Taxon
- SafflowerCarthamus tinctoriust0
- Treatment
- salt stresse0
- Outcome
- seed oil α-tocopherols, stearic acid, oleic acid or linoleic acid contentse0
- Direction
- No significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No significant effect of salt stress was observed on seed oil α-tocopherols, stearic acid, oleic acid or linoleic acid contents”
t0“Safflower”
Claim · model-written summary
Safflower-33 had higher leaf and root sodium and chloride than Safflower-39.
- Taxon
- SafflowerCarthamus tinctoriuse0
- Material
- Safflower-33e0
- Outcome
- leaf and root Na(+) and Cl(-)e0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“salt-sensitive Safflower-33 was higher in leaf and root Na(+) and Cl(-)”
t0“Safflower”
Claim · model-written summary
Safflower-39 had higher potassium and ion ratios.
- Taxon
- SafflowerCarthamus tinctoriuse0
- Material
- Safflower-39e0
- Outcome
- leaf and root K(+) , K(+) /Ca(2+) and Ca(2+) /Na(+)e0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Safflower-39 was higher in leaf and root K(+) , K(+) /Ca(2+) and Ca(2+) /Na(+)”
t0“Safflower”
Claim · model-written summary
Safflower-39 had higher yield, 100-seed weight, catalase and oil traits.
- Taxon
- SafflowerCarthamus tinctoriust0
- Material
- Safflower-39e1
- Outcome
- seed yield, 100-seed weight, catalase activity, seed oil contents, seed oil α-tocopherol and palmitic acide0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seed yield, 100-seed weight, catalase activity, seed oil contents, seed oil α-tocopherol and palmitic acid”
t0“Safflower”
e1“Safflower-39 was higher in leaf and root K(+) , K(+) /Ca(2+) and Ca(2+) /Na(+)”
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See all 6 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.