Abstract
Salinity is one of the most important abiotic stresses affecting crop yield. It is important to exploit pomegranates’ potential against salts because they are considered beneficial plants for human health due to their antioxidants and they are often exposed to severe salinity stress in the field. Three pomegranate cvs. were chosen as model plants for assessing the impact of different salt stress in the cultivation. The aim of this study was to evaluate the physiological and biochemical response of three pomegranate varieties (Punica granatum L.) (Wonderful, Ermioni, and Grenada) under different saline conditions. The plants were grown in a sand/perlite substrate in a 1:1 ratio and, throughout the experiment, were irrigated with a Hoagland nutrient solution, modified to contain four concentrations (0, 25, 50, and 75 mM) of NaCl, KCl, and K2SO4. At the end of the experiment, we measured the (a) concentrations of carotenoids and porphyrin of leaves; (b) phenols and flavonoids contents, and antioxidant capacity of leaves; (c) lipid peroxidation level; (d) leaf water potential; and (e) proline concentration. Ermioni contained the maximum concentration of proline phenols and flavonoids and antioxidant capacity in all salts. Furthermore, reductions in chlorophyll and carotenoid concentration were recorded in all cultivars. Grenada possessed the lowest porphyrin concentration. In conclusion, our results showed that Grenada was the most salt-susceptible cultivar. Salinity treatment triggered the enhancement in lipid peroxidation in the sensitive cultivar, while no change in lipid peroxidation level was observed in the tolerant cultivars. These data provide further support to the hypothesis that a mechanism exists that excludes salinity from the roots of tolerant cultivars, as well as an internal mechanism of tolerance that minimizes the accumulation of lipid peroxides through a higher proline content related to osmoregulation and membrane stabilization.
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Claims 8
Claim · model-written summary
Ermioni had the maximum proline, phenols, flavonoids and antioxidant capacity across salts.
- Taxon
- Pomegranate
Punica granatumt0 - Material
- Ermionie0
- Outcome
- maximum concentration of proline phenols and flavonoids and antioxidant capacitye0
- Direction
- maximume0
- Qualifier
- in all saltse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ermioni contained the maximum concentration of proline phenols and flavonoids and antioxidant capacity in all salts.”
t0“Pomegranate (Punica Granatum L.)”
Claim · model-written summary
Chlorophyll and carotenoid concentrations declined in all cultivars.
- Taxon
- PomegranatePunica granatumt0
- Treatment
- different saline conditionse1
- Outcome
- chlorophyll and carotenoid concentratione0
- Direction
- reductionse0
- Qualifier
- all cultivarse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reductions in chlorophyll and carotenoid concentration were recorded in all cultivars”
e1“different saline conditions”
t0“Pomegranate (Punica Granatum L.)”
Claim · model-written summary
Grenada had the lowest porphyrin concentration.
- Taxon
- PomegranatePunica granatumt0
- Material
- Grenadae0
- Outcome
- porphyrin concentratione0
- Direction
- loweste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grenada possessed the lowest porphyrin concentration.”
t0“Pomegranate (Punica Granatum L.)”
Claim · model-written summary
Grenada was the most salt-susceptible cultivar.
- Taxon
- PomegranatePunica granatumt0
- Material
- Grenadae0
- Outcome
- most salt-susceptible cultivare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grenada was the most salt-susceptible cultivar.”
t0“Pomegranate (Punica Granatum L.)”
Claim · model-written summary
Salinity enhanced lipid peroxidation in the sensitive cultivar.
- Taxon
- PomegranatePunica granatumt0
- Material
- sensitive cultivare0
- Treatment
- Salinity treatmente0
- Outcome
- lipid peroxidatione0
- Direction
- enhancemente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity treatment triggered the enhancement in lipid peroxidation in the sensitive cultivar”
t0“Pomegranate (Punica Granatum L.)”
Claim · model-written summary
Salinity caused no reported change in lipid peroxidation in tolerant cultivars.
- Taxon
- PomegranatePunica granatumt0
- Material
- tolerant cultivarse0
- Treatment
- Salinity treatmente1
- Outcome
- lipid peroxidation levele0
- Direction
- no changee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no change in lipid peroxidation level was observed in the tolerant cultivars”
e1“Salinity treatment”
t0“Pomegranate (Punica Granatum L.)”
Claim · model-written summary
Authors hypothesize that tolerant cultivars exclude salinity at roots.
- Taxon
- PomegranatePunica granatumt0
- Material
- tolerant cultivarse0
- Organ / stage
- rootse0
- Outcome
- excludes salinity from the rootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a mechanism exists that excludes salinity from the roots of tolerant cultivars”
t0“Pomegranate (Punica Granatum L.)”
Claim · model-written summary
Authors hypothesize that higher proline relates to osmoregulation and membrane stabilization and reduces lipid peroxide accumulation.
- Taxon
- PomegranatePunica granatumt0
- Compound
- prolinee0
- Outcome
- minimizes the accumulation of lipid peroxidese0
- Qualifier
- osmoregulation and membrane stabilizatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“an internal mechanism of tolerance that minimizes the accumulation of lipid peroxides through a higher proline content related to osmoregulation and membrane stabilization”
t0“Pomegranate (Punica Granatum L.)”
The same questions in other papers
salinity · physiology: oxidative · Punica granatum (pomegranate)Positive and negative results
1 in the opposite direction
- positive
salinity · physiology: pigments · Punica granatum (pomegranate)Positive and negative results
4 papers in the same direction as this paper · 1 in the opposite direction
- negative
- 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.