Abstract
The effects of salinity on growth, leaf nutrient content, water relations, gas exchange parameters and chlorophyll fluorescence were studied in six-month-old seedlings of citrus (Citrus limonia Osbeck) and rooted cuttings of olive (Olea europaea L. cv. Arbequina). Citrus and olive were grown in a greenhouse and watered with half strength Hoagland's solution plus 0 or 50 mM NaCl for citrus, or plus 0 or 100 mM NaCl for olive. Salinity increased Cl- and Na+ content in leaves and roots in both species and reduced total plant dry mass, net photosynthetic rate and stomatal conductance. Decreased growth and gas exchange was apparently due to a toxic effect of Cl- and/or Na+ and not due to osmotic stress since both species were able to osmotically adjust to maintain pressure potential higher than in non-salinized leaves. Internal CO2 concentration in the mesophyll was not reduced in either species. Salinity decreased leaf chlorophyll a content only in citrus.
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Claims 7
Claim · model-written summary
Salinity increased leaf and root Cl- and Na+ in both species.
- Taxon
- citrus and olive
Citrus
Olea europaeat0 - Treatment
- Salinitye0
- Outcome
- Cl- and Na+ content in leaves and rootse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity increased Cl- and Na+ content in leaves and roots in both species”
t0“citrus and olive”
Claim · model-written summary
Salinity reduced total plant dry mass in both species.
- Taxon
- citrus and oliveCitrusOlea europaeat0
- Treatment
- Salinitye0
- Outcome
- total plant dry masse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity increased Cl- and Na+ content in leaves and roots in both species and reduced total plant dry mass, net photosynthetic rate and stomatal conductance”
t0“citrus and olive”
Claim · model-written summary
Salinity reduced net photosynthetic rate and stomatal conductance in both species.
- Taxon
- citrus and oliveCitrusOlea europaeat0
- Treatment
- Salinitye0
- Outcome
- net photosynthetic rate and stomatal conductancee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity increased Cl- and Na+ content in leaves and roots in both species and reduced total plant dry mass, net photosynthetic rate and stomatal conductance”
t0“citrus and olive”
Claim · model-written summary
Both species osmotically adjusted, maintaining higher pressure potential than non-salinized leaves.
- Taxon
- citrus and oliveCitrusOlea europaeat0
- Treatment
- osmotically adjuste0
- Outcome
- pressure potentiale0
- Direction
- highere0
- Comparator
- non-salinized leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both species were able to osmotically adjust to maintain pressure potential higher than in non-salinized leaves”
t0“citrus and olive”
Claim · model-written summary
The authors attributed lower growth and gas exchange to Cl- or Na+ toxicity rather than osmotic stress.
- Taxon
- citrus and oliveCitrusOlea europaeat0
- Compound
- Cl- and/or Na+e0
- Outcome
- Decreased growth and gas exchangee0
- Qualifier
- apparently due to a toxic effecte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Decreased growth and gas exchange was apparently due to a toxic effect of Cl- and/or Na+ and not due to osmotic stress”
t0“citrus and olive”
Claim · model-written summary
Internal mesophyll CO2 concentration was not reduced in either species.
- Taxon
- citrus and oliveCitrusOlea europaeat0
- Outcome
- Internal CO2 concentration in the mesophylle0
- Direction
- not reducede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Internal CO2 concentration in the mesophyll was not reduced in either species”
t0“citrus and olive”
Claim · model-written summary
Salinity decreased leaf chlorophyll a only in citrus.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity decreased leaf chlorophyll a content only in citrus”
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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.