Abstract
Soil salinization is considered as one of the most important risks for agricultural soils. The objective of this experiment was to study the ecophysiological and the biochemical behaviour of two cultivars of Olea europaea L., 'Chemlali' and 'Koroneiki' under two salinity levels (100 and 200 mM NaCl) and the potential alleviation induced by gibberellic acid (GA3) foliar sprays. Salinity treatments significantly decreased photosynthetic assimilation rate and stomatal conductance compared to the control for both cultivars, but ‘Chemlali’ showed a higher resistance to increasing NaCl salinity compared to 'Koroneiki'. Leaf chlorophyll index also reduced gradually with increasing salinity concentration compared to the control. At the end of the experiment, a decrease in growth and dry matter accumulation was observed. Under high salinity stress, a significant decrease in root DW was recorded by 37% and 59% for ‘Chemlali’ and ‘Koroneiki’, respectively. High salinity stress decreased also shoot DW up to 51% for ‘Chemlali’. However, mannitol concentration increased under increasing salinity levels compared to control for ‘Chemlali’ cultivars. Interestingly, foliar application of GA3 alleviated the negative effects of salinity on ecophysiological parameters especially for ‘Koroneiki’. Indeed, GA3 improved photosynthetic assimilation up to 14% for ‘Chemlali’ and 36% for ‘Koroneiki’ compared to high salinity treatment. Both cultivars showed an increase in leaf chlorophyll index after applying GA3. Under high salinity combined with GA3, growth and dry weight were increased compared to salt stressed plants without GA3. The obtained results report that ‘Chemlali’ cultivar is more tolerant to salinity than ‘Koroneiki’ and suggest that GA3 plays an important role to reduce negative effects of NaCl salinity.
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Claims 14
Claim · model-written summary
Salinity significantly decreased photosynthetic assimilation rate and stomatal conductance compared to control in both olive cultivars.
- Taxon
- olive tree
Olea europaeat0 - Material
- 'Chemlali' and 'Koroneiki'e0
- Treatment
- Salinity treatmentse1
- Outcome
- photosynthetic assimilation rate and stomatal conductancee1
- Direction
- decreasede1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“olive tree (Olea europaea L.)”
e0“The objective of this experiment was to study the ecophysiological and the biochemical behaviour of two cultivars of Olea europaea L., 'Chemlali' and 'Koroneiki' under two salinity levels (100 and 200 mM NaCl)”
e1“Salinity treatments significantly decreased photosynthetic assimilation rate and stomatal conductance compared to the control for both cultivars”
Claim · model-written summary
Chemlali showed higher resistance to increasing NaCl salinity than Koroneiki.
- Taxon
- olive treeOlea europaeat0
- Material
- Chemlalie0
- Treatment
- increasing NaCl salinitye1
- Outcome
- resistance to increasing NaCl salinitye1
- Direction
- highere1
- Comparator
- Koroneikie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“olive tree (Olea europaea L.)”
e0“The objective of this experiment was to study the ecophysiological and the biochemical behaviour of two cultivars of Olea europaea L., 'Chemlali' and 'Koroneiki' under two salinity levels (100 and 200 mM NaCl)”
e1“showed a higher resistance to increasing NaCl salinity compared to”
Claim · model-written summary
Leaf chlorophyll index was reduced with increasing salinity concentration compared to control.
- Taxon
- olive treeOlea europaeat0
- Treatment
- increasing salinity concentratione1
- Outcome
- Leaf chlorophyll indexe1
- Direction
- reducede1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“olive tree (Olea europaea L.)”
e1“Leaf chlorophyll index also reduced gradually with increasing salinity concentration compared to the control”
Claim · model-written summary
Under two salinity levels, growth and dry matter accumulation decreased at the end of the experiment.
- Taxon
- olive treeOlea europaeat0
- Treatment
- two salinity levels (100 and 200 mM NaCl)e0
- Outcome
- growth and dry matter accumulatione1
- Direction
- decreasee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“olive tree (Olea europaea L.)”
e0“The objective of this experiment was to study the ecophysiological and the biochemical behaviour of two cultivars of Olea europaea L., 'Chemlali' and 'Koroneiki' under two salinity levels (100 and 200 mM NaCl)”
e1“At the end of the experiment, a decrease in growth and dry matter accumulation was observed”
Claim · model-written summary
Under high salinity stress, root dry weight of Chemlali decreased significantly by 37%.
- Taxon
- olive treeOlea europaeat0
- Material
- Chemlalie0
- Treatment
- high salinity stresse1
- Outcome
- root DWe1
- Direction
- decreasee1
- Value
- 37%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“olive tree (Olea europaea L.)”
e0“The objective of this experiment was to study the ecophysiological and the biochemical behaviour of two cultivars of Olea europaea L., 'Chemlali' and 'Koroneiki' under two salinity levels (100 and 200 mM NaCl)”
e1“Under high salinity stress, a significant decrease in root DW was recorded by 37% and 59%”
Claim · model-written summary
Under high salinity stress, root dry weight of Koroneiki decreased significantly by 59%.
- Taxon
- olive treeOlea europaeat0
- Material
- Koroneikie0
- Treatment
- high salinity stresse1
- Outcome
- root DWe1
- Direction
- decreasee1
- Value
- 59%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“olive tree (Olea europaea L.)”
e0“The objective of this experiment was to study the ecophysiological and the biochemical behaviour of two cultivars of Olea europaea L., 'Chemlali' and 'Koroneiki' under two salinity levels (100 and 200 mM NaCl)”
e1“Under high salinity stress, a significant decrease in root DW was recorded by 37% and 59%”
Claim · model-written summary
High salinity stress decreased shoot dry weight of Chemlali by up to 51%.
- Taxon
- olive treeOlea europaeat0
- Material
- Chemlalie0
- Treatment
- High salinity stresse1
- Outcome
- shoot DWe1
- Direction
- decreasede1
- Value
- 51%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“olive tree (Olea europaea L.)”
e0“The objective of this experiment was to study the ecophysiological and the biochemical behaviour of two cultivars of Olea europaea L., 'Chemlali' and 'Koroneiki' under two salinity levels (100 and 200 mM NaCl)”
e1“High salinity stress decreased also shoot DW up to 51%”
Claim · model-written summary
Mannitol concentration of Chemlali increased under increasing salinity levels compared to control.
- Taxon
- olive treeOlea europaeat0
- Material
- Chemlalie0
- Treatment
- increasing salinity levelse1
- Outcome
- mannitol concentratione1
- Direction
- increasede1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“olive tree (Olea europaea L.)”
e0“The objective of this experiment was to study the ecophysiological and the biochemical behaviour of two cultivars of Olea europaea L., 'Chemlali' and 'Koroneiki' under two salinity levels (100 and 200 mM NaCl)”
e1“mannitol concentration increased under increasing salinity levels compared to control”
Claim · model-written summary
Foliar GA3 alleviated the negative effects of salinity on ecophysiological parameters, especially in Koroneiki.
- Taxon
- olive treeOlea europaeat0
- Material
- Koroneikie0
- Treatment
- foliar application of GA3e1
- Outcome
- ecophysiological parameterse1
- Direction
- alleviatede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“olive tree (Olea europaea L.)”
e0“The objective of this experiment was to study the ecophysiological and the biochemical behaviour of two cultivars of Olea europaea L., 'Chemlali' and 'Koroneiki' under two salinity levels (100 and 200 mM NaCl)”
e1“foliar application of GA3 alleviated the negative effects of salinity on ecophysiological parameters especially for”
Claim · model-written summary
Foliar GA3 improved photosynthetic assimilation by up to 14% in Chemlali compared to high salinity treatment.
- Taxon
- olive treeOlea europaeat0
- Material
- Chemlalie0
- Treatment
- GA3e1
- Outcome
- photosynthetic assimilatione1
- Direction
- improvede1
- Value
- 14%e1
- Comparator
- high salinity treatmente2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“olive tree (Olea europaea L.)”
e0“The objective of this experiment was to study the ecophysiological and the biochemical behaviour of two cultivars of Olea europaea L., 'Chemlali' and 'Koroneiki' under two salinity levels (100 and 200 mM NaCl)”
e1“GA3 improved photosynthetic assimilation up to 14%”
e2“compared to high salinity treatment”
Claim · model-written summary
Foliar GA3 improved photosynthetic assimilation by up to 36% in Koroneiki compared to high salinity treatment.
- Taxon
- olive treeOlea europaeat0
- Material
- Koroneikie0
- Treatment
- GA3e1
- Outcome
- photosynthetic assimilatione1
- Direction
- improvede1
- Value
- 36%e3
- Comparator
- high salinity treatmente2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“olive tree (Olea europaea L.)”
e0“The objective of this experiment was to study the ecophysiological and the biochemical behaviour of two cultivars of Olea europaea L., 'Chemlali' and 'Koroneiki' under two salinity levels (100 and 200 mM NaCl)”
e1“GA3 improved photosynthetic assimilation up to 14%”
e2“compared to high salinity treatment”
e3“and 36% for”
Claim · model-written summary
GA3 application increased leaf chlorophyll index in both cultivars.
- Taxon
- olive treeOlea europaeat0
- Material
- 'Chemlali' and 'Koroneiki'e0
- Treatment
- applying GA3e1
- Outcome
- leaf chlorophyll indexe1
- Direction
- increasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“olive tree (Olea europaea L.)”
e0“The objective of this experiment was to study the ecophysiological and the biochemical behaviour of two cultivars of Olea europaea L., 'Chemlali' and 'Koroneiki' under two salinity levels (100 and 200 mM NaCl)”
e1“Both cultivars showed an increase in leaf chlorophyll index after applying GA3”
Claim · model-written summary
Under high salinity combined with GA3, growth and dry weight increased compared to salt-stressed plants without GA3.
- Taxon
- olive treeOlea europaeat0
- Treatment
- high salinity combined with GA3e1
- Outcome
- growth and dry weighte1
- Direction
- increasede1
- Comparator
- salt stressed plants without GA3e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“olive tree (Olea europaea L.)”
e1“Under high salinity combined with GA3, growth and dry weight were increased compared to salt stressed plants without GA3”
Claim · model-written summary
Chemlali is more tolerant to salinity than Koroneiki.
- Taxon
- olive treeOlea europaeat0
- Material
- Chemlalie0
- Outcome
- tolerant to salinitye1
- Direction
- moree1
- Comparator
- Koroneikie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“olive tree (Olea europaea L.)”
e0“The objective of this experiment was to study the ecophysiological and the biochemical behaviour of two cultivars of Olea europaea L., 'Chemlali' and 'Koroneiki' under two salinity levels (100 and 200 mM NaCl)”
e1“cultivar is more tolerant to salinity than”
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