Abstract
Potassium (K+) is an essential macronutrient playing a crucial role in plant growth and development as well as in many physiological and biochemical processes. An adequate K+ concentration in the rooting medium has been linked to plant’s tolerance to abiotic stress. This study was undertaken to assess the effects of different K+ concentration treatments (0.2, 2.5 and 5 mM) on the growth, nutritional behavior, total chlorophyll, proline and malondialdehyde contents as well as total polyphenols and ascorbate contents, and superoxide dismutase and catalase activities of durum wheat seedlings under salt stress (100 mM NaCl). Obtained results showed that increasing the K+ availability in the nutrient solution enhanced wheat seedlings’ growth-related parameters, namely relative growth rate and relative water content. Concomitantly, the chlorophyll pigment and proline contents were significantly increased, whereas the level of lipid peroxidation was noticeably decreased. Simultaneously, the antioxidant defense machinery was induced through the significant increases in total polyphenols and ascorbate contents as well as in the activities of superoxide dismutase and catalase enzymes. Taken together, the results of the current study showed that K+ plays a key role in the mitigation of the devastating effects of salt stress on durum wheat’s growth. Therefore, increasing the K+ availability in the rooting medium may be used as an efficient method for wheat cultivation in salt-affected soils.
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Claims 6
Claim · model-written summary
Higher K availability enhanced relative growth rate and relative water content.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- increasing the K+ availabilitye0
- Outcome
- relative growth rate and relative water contente0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing the K+ availability in the nutrient solution enhanced wheat seedlings’ growth-related parameters, namely relative growth rate and relative water content”
Claim · model-written summary
Higher K availability significantly increased chlorophyll and proline content.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- supplemental potassiumt1
- Outcome
- chlorophyll pigment and proline contentse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the chlorophyll pigment and proline contents were significantly increased”
t0“wheat”
t1“supplemental potassium”
Claim · model-written summary
Higher K availability noticeably decreased lipid peroxidation.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- supplemental potassiumt1
- Outcome
- level of lipid peroxidatione0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the level of lipid peroxidation was noticeably decreased”
t0“wheat”
t1“supplemental potassium”
Claim · model-written summary
Higher K availability significantly increased polyphenol and ascorbate content.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- supplemental potassiumt1
- Outcome
- total polyphenols and ascorbate contentse0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant increases in total polyphenols and ascorbate contents”
t0“wheat”
t1“supplemental potassium”
Claim · model-written summary
Higher K availability significantly increased superoxide dismutase and catalase activity.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- supplemental potassiumt1
- Outcome
- activities of superoxide dismutase and catalase enzymese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“activities of superoxide dismutase and catalase enzymes”
t0“wheat”
t1“supplemental potassium”
Claim · model-written summary
Authors recommend increasing K in rooting medium for wheat cultivation on salt-affected soils.
- Taxon
- wheatTriticum aestivume0
- Outcome
- increasing the K+ availability in the rooting mediume0
- Setting
- salt-affected soilse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing the K+ availability in the rooting medium may be used as an efficient method for wheat cultivation in salt-affected soils”
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