Abstract
Salt-induced land degradation has gradually increased in several major irrigation schemes within arid and semiarid regions. To maximize crop productivity under saline conditions, either salt tolerance crops should be cultivated or areas should be desalinated. One of the most promising and cost-effective ways to maximize crop productivity is to use salt tolerant plants to remove salt from the soil. For this study, four levels of saline soils were cultivated with the halophyte species Salsola soda L. and Portulaca oleracea L. in pots. The soils had the following salinity levels: 1) nonsaline soil (NSS, 0.9 dS m-1), 2) slightly saline soil (SSS, 4.2 dS m-1), 3) moderately saline soil (MSS, 7.2 dS m-1), and 4) highly saline soil (HSS, 14.1 dS m-1). To assess the salt tolerance capacity of the halophytes, physiological and biochemical parameters as well as the accumulation of leaf Na+ and Cl? ions in the halophytes were investigated. Soils were additionally evaluated for electrical conductivity, pH, and soil ion concentrations prior to planting and the following harvest.The fresh and dry weights of both halophytes increased with increasing salinity levels (P ≤ 0.05). The proline contents of S. soda and P. oleracea were 3.1 and 4.6 times higher, respectively, than within the same species grown under control conditions. The malondialdehyde and membrane stability index values for S. soda were insignificant under all salt conditions. Only P. oleracea showed significantly higher membrane damage under HSS conditions. In a similar manner, the chlorophyll content of both halophytes was not impacted for all of the salinity levels. Na+ and Cl- concentrations significantly decreased in soils that were planted with both halophytes (P ≤ 0.05). The impact of S. soda on the removal of Na+ from HSS was significantly higher than that of P. oleracea and removed 151.4 mmol Na+ pot-1 as compared to the removal of 61.2 mmol Na+ pot-1 by P. oleracea.
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Claims 11
Claim · model-written summary
Fresh and dry weights of Salsola soda increased with salinity.
- Taxon
- Salsola soda
Salsola sodat0 - Treatment
- increasing salinity levelse0
- Outcome
- fresh and dry weightse0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The fresh and dry weights of both halophytes increased with increasing salinity levels (P ≤ 0.05).”
t0“Salsola soda”
Claim · model-written summary
Fresh and dry weights of Portulaca oleracea increased with salinity.
- Taxon
- Portulaca oleracea
Portulaca oleraceat0 - Treatment
- increasing salinity levelse0
- Outcome
- fresh and dry weightse0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The fresh and dry weights of both halophytes increased with increasing salinity levels (P ≤ 0.05).”
t0“Portulaca oleracea”
Claim · model-written summary
Salsola soda proline content was 3.1 times its control.
- Taxon
- S. sodaSalsola sodae0
- Outcome
- proline contentse0
- Direction
- highere0
- Value
- 3.1e0
- Comparator
- same species grown under control conditionse0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The proline contents of S. soda and P. oleracea were 3.1 and 4.6 times higher, respectively, than within the same species grown under control conditions.”
t0“Salsola soda”
Claim · model-written summary
Portulaca oleracea proline content was 4.6 times its control.
- Taxon
- P. oleraceaPortulaca oleraceae0
- Outcome
- proline contentse0
- Direction
- highere0
- Value
- 4.6e0
- Comparator
- same species grown under control conditionse0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The proline contents of S. soda and P. oleracea were 3.1 and 4.6 times higher, respectively, than within the same species grown under control conditions.”
Claim · model-written summary
Salsola soda malondialdehyde and membrane stability index did not significantly vary under salt conditions.
- Taxon
- S. sodaSalsola sodae0
- Treatment
- all salt conditionse0
- Outcome
- malondialdehyde and membrane stability index valuese0
- Direction
- insignificante0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The malondialdehyde and membrane stability index values for S. soda were insignificant under all salt conditions.”
Claim · model-written summary
Portulaca oleracea had significantly higher membrane damage under high salinity.
- Taxon
- P. oleraceaPortulaca oleraceae0
- Treatment
- HSS conditionse0
- Outcome
- membrane damagee0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Only P. oleracea showed significantly higher membrane damage under HSS conditions.”
Claim · model-written summary
Salinity did not affect chlorophyll content in Salsola soda.
- Taxon
- Salsola sodaSalsola sodat0
- Treatment
- all of the salinity levelse0
- Outcome
- chlorophyll contente0
- Direction
- not impactede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the chlorophyll content of both halophytes was not impacted for all of the salinity levels.”
t0“Salsola soda”
Claim · model-written summary
Salinity did not affect chlorophyll content in Portulaca oleracea.
- Taxon
- Portulaca oleraceaPortulaca oleraceat0
- Treatment
- all of the salinity levelse0
- Outcome
- chlorophyll contente0
- Direction
- not impactede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the chlorophyll content of both halophytes was not impacted for all of the salinity levels.”
t0“Portulaca oleracea”
Claim · model-written summary
Planting Salsola soda significantly lowered soil sodium and chloride concentrations.
- Taxon
- Salsola sodaSalsola sodat0
- Treatment
- planted with both halophytese0
- Outcome
- Na+ and Cl- concentrationse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Na+ and Cl- concentrations significantly decreased in soils that were planted with both halophytes (P ≤ 0.05).”
t0“Salsola soda”
Claim · model-written summary
Planting Portulaca oleracea significantly lowered soil sodium and chloride concentrations.
- Taxon
- Portulaca oleraceaPortulaca oleraceat0
- Treatment
- planted with both halophytese0
- Outcome
- Na+ and Cl- concentrationse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Na+ and Cl- concentrations significantly decreased in soils that were planted with both halophytes (P ≤ 0.05).”
t0“Portulaca oleracea”
Claim · model-written summary
Salsola soda removed more sodium from highly saline soil than Portulaca oleracea, 151.4 versus 61.2 mmol Na+ pot-1.
- Taxon
- S. sodaSalsola sodae0
- Treatment
- S. sodae0
- Outcome
- removal of Na+ from HSSe0
- Direction
- highere0
- Value
- 151.4 mmol Na+ pot-1e0
- Qualifier
- 61.2 mmol Na+ pot-1e0
- Comparator
- P. oleraceae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The impact of S. soda on the removal of Na+ from HSS was significantly higher than that of P. oleracea and removed 151.4 mmol Na+ pot-1 as compared to the removal of 61.2 mmol Na+ pot-1 by P. oleracea.”
The same questions in other papers
salinity · physiology: pigments · Portulaca oleraceaResults differ
1 paper in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
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.