Abstract
Date palm is one of the most important trees for economic and social development in many countries and its fruits with high nutritional value. This aimed to determine the role of salicylic (SA) and jasmonic acids (JA) as antioxidants against salt stress. Salt stress was applied with water irrigation to two-year-old date palm offshoots by using 200 mM NaCl alone or in combination with foliar sprays of JA and SA at 1, 2 and 3 mgL-1. Results indicate that salinity at 200 mM NaCl remarkably increased the content of osmolytes (e.g., proline, glycine betaine and soluble sugars) in date palm leaves. Moreover, with the combination of 2 and 3 mg.L-1 SA and 1 mg.L-1 JA with salinity, the osmolyte content was remarkably higher than in salinity treatment alone. When date palm was exposed to salinity alone, the levels of oxidative markers, Malondialdehyde as a lipid peroxidation marker and H2O2 as a ROS accumulation marker, substantially increased compared with the control. Importantly, the levels of these oxidative markers remarkably decreased when plants were subjected to combined salinity and treatment with at 2 and 3 mg.L-1 SA and 3 mg.L-1 SA compared with the salinity treatment alone. In addition, spraying 2 and 3 mg.L-1 SA and 3 mg.L-1 JA on leaves combined with salinity treatment remarkably decreased the salinity effect on membrane stability index. Moreover, when 2 or 3 mg.L-1 were sprayed, no remarkable difference was detected for any investigated characteristics, and SA had a greater effect than JA in alleviating the salinity effect.
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Claims 10
Claim · model-written summary
Salinity increased leaf osmolyte content.
- Taxon
- date palm
Phoenix dactyliferae0 - Organ / stage
- leavese0
- Treatment
- salinity at 200 mM NaCle0
- Outcome
- content of osmolytes (e.g., proline, glycine betaine and soluble sugars)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“salinity at 200 mM NaCl remarkably increased the content of osmolytes (e.g., proline, glycine betaine and soluble sugars) in date palm leaves”
Claim · model-written summary
SA at 2 and 3 mg.L-1 with salinity raised osmolytes relative to salinity alone.
- Taxon
- Date PalmPhoenix dactyliferat0
- Treatment
- 2 and 3 mg.L-1 SAe0
- Outcome
- osmolyte contente0
- Direction
- highere0
- Comparator
- salinity treatment alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with the combination of 2 and 3 mg.L-1 SA and 1 mg.L-1 JA with salinity, the osmolyte content was remarkably higher than in salinity treatment alone”
t0“Date Palm”
Claim · model-written summary
JA at 1 mg.L-1 with salinity raised osmolytes relative to salinity alone.
- Taxon
- Date PalmPhoenix dactyliferat0
- Treatment
- 1 mg.L-1 JAe0
- Outcome
- osmolyte contente0
- Direction
- highere0
- Comparator
- salinity treatment alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with the combination of 2 and 3 mg.L-1 SA and 1 mg.L-1 JA with salinity, the osmolyte content was remarkably higher than in salinity treatment alone”
t0“Date Palm”
Claim · model-written summary
Salinity increased malondialdehyde relative to control.
- Taxon
- date palmPhoenix dactyliferae0
- Treatment
- salinity alonee0
- Outcome
- Malondialdehydee0
- Direction
- increasede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When date palm was exposed to salinity alone, the levels of oxidative markers, Malondialdehyde as a lipid peroxidation marker and H2O2 as a ROS accumulation marker, substantially increased compared with the control”
Claim · model-written summary
Salinity increased H2O2 relative to control.
- Taxon
- date palmPhoenix dactyliferae0
- Treatment
- salinity alonee0
- Outcome
- H2O2e0
- Direction
- increasede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When date palm was exposed to salinity alone, the levels of oxidative markers, Malondialdehyde as a lipid peroxidation marker and H2O2 as a ROS accumulation marker, substantially increased compared with the control”
Claim · model-written summary
SA at 2 and 3 mg.L-1 with salinity decreased oxidative markers relative to salinity alone.
- Taxon
- Date PalmPhoenix dactyliferat0
- Treatment
- 2 and 3 mg.L-1 SAe0
- Outcome
- oxidative markerse0
- Direction
- decreasede0
- Comparator
- salinity treatment alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the levels of these oxidative markers remarkably decreased when plants were subjected to combined salinity and treatment with at 2 and 3 mg.L-1 SA and 3 mg.L-1 SA compared with the salinity treatment alone”
t0“Date Palm”
Claim · model-written summary
SA at 2 and 3 mg.L-1 with salinity decreased the salinity effect on membrane stability index.
- Taxon
- Date PalmPhoenix dactyliferat0
- Treatment
- 2 and 3 mg.L-1 SAe0
- Outcome
- salinity effect on membrane stability indexe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spraying 2 and 3 mg.L-1 SA and 3 mg.L-1 JA on leaves combined with salinity treatment remarkably decreased the salinity effect on membrane stability index”
t0“Date Palm”
Claim · model-written summary
JA at 3 mg.L-1 with salinity decreased the salinity effect on membrane stability index.
- Taxon
- Date PalmPhoenix dactyliferat0
- Treatment
- 3 mg.L-1 JAe0
- Outcome
- salinity effect on membrane stability indexe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spraying 2 and 3 mg.L-1 SA and 3 mg.L-1 JA on leaves combined with salinity treatment remarkably decreased the salinity effect on membrane stability index”
t0“Date Palm”
Claim · model-written summary
Sprays at 2 or 3 mg.L-1 did not differ remarkably for investigated characteristics.
- Taxon
- Date PalmPhoenix dactyliferat0
- Treatment
- 2 or 3 mg.L-1e0
- Outcome
- investigated characteristicse0
- Direction
- no remarkable differencee0
- Comparator
- 2 or 3 mg.L-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when 2 or 3 mg.L-1 were sprayed, no remarkable difference was detected for any investigated characteristics”
t0“Date Palm”
Claim · model-written summary
SA alleviated the salinity effect more than JA.
- Taxon
- Date PalmPhoenix dactyliferat0
- Treatment
- SAe0
- Outcome
- alleviating the salinity effecte0
- Direction
- greatere0
- Comparator
- JAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SA had a greater effect than JA in alleviating the salinity effect”
t0“Date Palm”
The same questions in other papers
salicylic acid · physiology: osmolytes · Phoenix dactylifera (date palm)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
jasmonic acid · physiology: oxidative · Phoenix dactylifera (date palm)Results agree
1 paper in the same direction as this paper
- positive
salicylic acid · physiology: oxidative · Phoenix dactylifera (date palm)Results agree
2 papers in the same direction as this paper
- positive
- positive
salinity · physiology: osmolytes · Phoenix dactylifera (date palm)Positive and negative results
1 paper in the same direction as this paper · 3 in the opposite direction
- no effect
- negative
- negative
1 paper more in this group
See all 5 papers →salinity · physiology: oxidative · Phoenix dactylifera (date palm)Positive and negative results
3 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
2 papers more in this group
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.