Abstract
In north Tunisia, the Quercus suber L. forests have shown a great decline indices as well as a non-natural regeneration. The climate changes could accentuate this unappreciated situation. In this study, the effect of water deficit on physiological behavior of Quercus suber seedlings was investigated. Photosynthetic responses of 15 months old Cork oak seedlings grown for 30 days under 40% and 80% soil water water content (control) were evaluated. Results showed a negative effect of water deficit and a positive effect of the intercellular CO2 concentration increase both on photosynthesis and transpiration. Stomata conductance might play a major role in balancing gas exchanges between the leaf and its environment. Moreover, global warming could negatively affect carbon uptake of Cork oak species in northern Tunisia. Elevated CO2 leaf content will benefit Cork oak growing under water deficit by decreasing both photoysnthesis and transpiration, which will decrease either the rate or the severity of water deficits, with limited effects on metabolism. the results suggest that high intercellular CO2 concentration could increase water use efficiency among Cork oak species.
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Claims 3
Claim · model-written summary
Water deficit had a negative effect on photosynthesis and transpiration of Quercus suber seedlings relative to the control.
- Taxon
- Quercus suber
Quercus subert0 - Treatment
- water deficite1
- Outcome
- photosynthesis and transpiratione1
- Direction
- negative effecte1
- Comparator
- controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Quercus suber L. Seedlings”
e1“Results showed a negative effect of water deficit and a positive effect of the intercellular CO2 concentration increase both on photosynthesis and transpiration”
e2“Photosynthetic responses of 15 months old Cork oak seedlings grown for 30 days under 40% and 80% soil water water content (control) were evaluated”
Claim · model-written summary
An increase in intercellular CO2 concentration had a positive effect on photosynthesis and transpiration of Quercus suber seedlings.
- Taxon
- Quercus suberQuercus subert0
- Treatment
- intercellular CO2 concentration increasee1
- Outcome
- photosynthesis and transpiratione1
- Direction
- positive effecte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Quercus suber L. Seedlings”
e1“Results showed a negative effect of water deficit and a positive effect of the intercellular CO2 concentration increase both on photosynthesis and transpiration”
Claim · model-written summary
High intercellular CO2 concentration could increase water use efficiency in cork oak.
- Taxon
- Quercus suberQuercus subert0
- Treatment
- high intercellular CO2 concentratione3
- Outcome
- water use efficiencye3
- Direction
- increasee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Quercus suber L. Seedlings”
e3“the results suggest that high intercellular CO2 concentration could increase water use efficiency among Cork oak species”
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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.