Abstract
Soil salinity is one of the most important environmental factors responsible for serious agricultural problems. Tomato salt tolerance may be improved by genetic selection and by the use of adapted physiological tools. The aim of this study was to investigate the impact of exogenous application of salicylic acid (SA 0.01 mM) and calcium sulphate (CaSO4 5 mM), singly or in combination, on plant growth, photosynthetic pigments, nutritional behaviour and some metabolic parameters (total chlorophyll, carotenoids, soluble sugars, proline and lipid peroxidation) of two tomato cultivars (cv. Super Marmande and cv. Red River) exposed to salt stress (100 mM NaCl). Application of 100 mM NaCl reduced plant growth, total chlorophyll and carotenoid contents. Salt stress also induced an accumulation of Na+, a decrease in K+ and Ca2 + concentration and root sugar level, an increase in malondialdehyde (MDA) and proline concentration. Deleterious impact of salinity was related to modification in ion content rather than modification in the plant water status. Exogenous application of SA or Ca alone improved plant behaviour in the presence of NaCl. Nevertheless, the best results in terms of growth, photosynthetic pigment concentrations and mineral nutrition (limitation of Na+ accumulation and maintenance of K+ and Ca2 + content) were obtained in response to the combined SA + Ca treatment. Although the involved physiological parameters varied depending on the considered cultivar, our results suggest that Ca2 + and SA may interact to reduce the stress experienced by the plant in the presence of NaCl.
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Claims 15
Claim · model-written summary
100 mM NaCl reduced tomato plant growth.
- Taxon
- tomato (Solanum lycopersicum)
Solanum lycopersicumt0 - Treatment
- 100 mM NaCle0
- Outcome
- plant growthe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 100 mM NaCl reduced plant growth, total chlorophyll and carotenoid contents.”
t0“tomato (Solanum lycopersicum)”
Claim · model-written summary
100 mM NaCl reduced total chlorophyll and carotenoid contents in tomato.
- Taxon
- tomato (Solanum lycopersicum)Solanum lycopersicumt0
- Treatment
- 100 mM NaCle0
- Outcome
- total chlorophyll and carotenoid contentse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 100 mM NaCl reduced plant growth, total chlorophyll and carotenoid contents.”
t0“tomato (Solanum lycopersicum)”
Claim · model-written summary
Salt stress increased tomato Na+ accumulation.
- Taxon
- tomato (Solanum lycopersicum)Solanum lycopersicumt0
- Treatment
- Salt stresse0
- Outcome
- accumulation of Na+e0
- Direction
- accumulatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt stress also induced an accumulation of Na+”
t0“tomato (Solanum lycopersicum)”
Claim · model-written summary
Salt stress decreased tomato K+ and Ca2 + concentrations.
- Taxon
- tomato (Solanum lycopersicum)Solanum lycopersicumt0
- Treatment
- Salt stresse0
- Outcome
- K+ and Ca2 + concentratione0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt stress also induced an accumulation of Na+, a decrease in K+ and Ca2 + concentration and root sugar level, an increase in malondialdehyde (MDA) and proline concentration.”
t0“tomato (Solanum lycopersicum)”
Claim · model-written summary
Salt stress decreased tomato root sugar level.
- Taxon
- tomato (Solanum lycopersicum)Solanum lycopersicumt0
- Treatment
- Salt stresse0
- Outcome
- root sugar levele0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt stress also induced an accumulation of Na+, a decrease in K+ and Ca2 + concentration and root sugar level, an increase in malondialdehyde (MDA) and proline concentration.”
t0“tomato (Solanum lycopersicum)”
Claim · model-written summary
Salt stress increased tomato malondialdehyde and proline concentrations.
- Taxon
- tomato (Solanum lycopersicum)Solanum lycopersicumt0
- Treatment
- Salt stresse0
- Outcome
- malondialdehyde (MDA) and proline concentratione0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt stress also induced an accumulation of Na+, a decrease in K+ and Ca2 + concentration and root sugar level, an increase in malondialdehyde (MDA) and proline concentration.”
t0“tomato (Solanum lycopersicum)”
Claim · model-written summary
The harmful salinity effect was associated with ion content rather than plant water status.
- Taxon
- tomato (Solanum lycopersicum)Solanum lycopersicumt0
- Compound
- ion contente0
- Outcome
- Deleterious impact of salinitye0
- Comparator
- plant water statuse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Deleterious impact of salinity was related to modification in ion content rather than modification in the plant water status.”
t0“tomato (Solanum lycopersicum)”
Claim · model-written summary
Salicylic acid alone improved tomato behavior under NaCl.
- Taxon
- tomato (Solanum lycopersicum)Solanum lycopersicumt0
- Treatment
- SAe0
- Outcome
- plant behavioure0
- Direction
- improvede0
- Qualifier
- in the presence of NaCle0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous application of SA or Ca alone improved plant behaviour in the presence of NaCl.”
t0“tomato (Solanum lycopersicum)”
Claim · model-written summary
Calcium alone improved tomato behavior under NaCl.
- Taxon
- tomato (Solanum lycopersicum)Solanum lycopersicumt0
- Treatment
- Cae0
- Outcome
- plant behavioure0
- Direction
- improvede0
- Qualifier
- in the presence of NaCle0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous application of SA or Ca alone improved plant behaviour in the presence of NaCl.”
t0“tomato (Solanum lycopersicum)”
Claim · model-written summary
Combined SA and Ca gave the best tomato growth under salinity.
- Taxon
- tomato (Solanum lycopersicum)Solanum lycopersicumt0
- Treatment
- combined SA + Ca treatmente0
- Outcome
- growthe0
- Direction
- beste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the best results in terms of growth, photosynthetic pigment concentrations and mineral nutrition (limitation of Na+ accumulation and maintenance of K+ and Ca2 + content) were obtained in response to the combined SA + Ca treatment.”
t0“tomato (Solanum lycopersicum)”
Claim · model-written summary
Combined SA and Ca gave the best photosynthetic pigment concentrations.
- Taxon
- tomato (Solanum lycopersicum)Solanum lycopersicumt0
- Treatment
- combined SA + Ca treatmente0
- Outcome
- photosynthetic pigment concentrationse0
- Direction
- beste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the best results in terms of growth, photosynthetic pigment concentrations and mineral nutrition (limitation of Na+ accumulation and maintenance of K+ and Ca2 + content) were obtained in response to the combined SA + Ca treatment.”
t0“tomato (Solanum lycopersicum)”
Claim · model-written summary
Combined SA and Ca limited tomato Na+ accumulation.
- Taxon
- tomato (Solanum lycopersicum)Solanum lycopersicumt0
- Treatment
- combined SA + Ca treatmente0
- Outcome
- Na+ accumulatione0
- Direction
- limitatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mineral nutrition (limitation of Na+ accumulation and maintenance of K+ and Ca2 + content) were obtained in response to the combined SA + Ca treatment.”
t0“tomato (Solanum lycopersicum)”
Claim · model-written summary
Combined SA and Ca maintained tomato K+ and Ca2 + content.
- Taxon
- tomato (Solanum lycopersicum)Solanum lycopersicumt0
- Treatment
- combined SA + Ca treatmente0
- Outcome
- K+ and Ca2 + contente0
- Direction
- maintenancee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maintenance of K+ and Ca2 + content) were obtained in response to the combined SA + Ca treatment.”
t0“tomato (Solanum lycopersicum)”
Claim · model-written summary
The physiological response parameters varied by tomato cultivar.
- Taxon
- tomato (Solanum lycopersicum)Solanum lycopersicumt0
- Material
- cultivare0
- Outcome
- physiological parameterse0
- Direction
- variede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the involved physiological parameters varied depending on the considered cultivar”
t0“tomato (Solanum lycopersicum)”
Claim · model-written summary
The authors suggest that Ca2 + and SA interact to reduce tomato salt stress.
- Taxon
- tomato (Solanum lycopersicum)Solanum lycopersicumt0
- Compound
- Ca2 + and SAe0
- Outcome
- stress experienced by the plante0
- Direction
- reducee0
- Qualifier
- maye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ca2 + and SA may interact to reduce the stress experienced by the plant in the presence of NaCl.”
t0“tomato (Solanum lycopersicum)”
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See all 15 papers →8 of 10 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.