Abstract
The effects of salt and water stress on growth and several stress markers were investigated in cherry tomato plants. Some growth parameters (stem length and number of leaves) and chlorophyll contents were determined every third day during plant growth, and leaf material was collected after 25 and 33 days of treatment. Both stresses inhibited plant growth; chlorophyll levels, however, decreased only in response to high NaCl concentrations. Proline contents largely increased in leaves of stressed plants, reaching levels high enough to play a major role in cellular osmotic adjustment. Despite reports indicating that tomato does not synthesize glycine betaine, the stress-induced accumulation of this osmolyte was detected in cherry tomato, albeit at lower concentration than that of proline. Therefore, it appears that the plants are able to synthesise glycine betaine as a secondary osmolyte under strong stress conditions. Total sugars levels, on the contrary, decreased in stress-treated plants. Both stress treatments caused secondary oxidative stress in the plants, as indicated by a significant increase in malondialdehyde (MDA) contents. Water stress led to an increase in total phenolics and flavonoid contents and a reduction of carotenoid levels in the leaves; flavonoids also increased under high salinity conditions.
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Claims 9
Claim · model-written summary
Salt and water stress inhibited cherry tomato growth.
- Taxon
- Cherry Tomato
Solanum lycopersicum var. cerasiformet0 - Treatment
- Both stressese0
- Outcome
- plant growthe0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both stresses inhibited plant growth”
t0“Cherry Tomato”
Claim · model-written summary
High NaCl concentrations decreased chlorophyll levels.
- Taxon
- Cherry TomatoSolanum lycopersicum var. cerasiformet0
- Treatment
- high NaCl concentrationse0
- Outcome
- chlorophyll levelse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“chlorophyll levels, however, decreased only in response to high NaCl concentrations”
t0“Cherry Tomato”
Claim · model-written summary
Stress increased leaf proline contents to levels potentially contributing to osmotic adjustment.
- Taxon
- Cherry TomatoSolanum lycopersicum var. cerasiformet0
- Organ / stage
- leavese0
- Treatment
- stressede0
- Outcome
- Proline contentse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Proline contents largely increased in leaves of stressed plants, reaching levels high enough to play a major role in cellular osmotic adjustment”
t0“Cherry Tomato”
Claim · model-written summary
Stress induced glycine betaine accumulation at a lower concentration than proline.
- Taxon
- cherry tomatoSolanum lycopersicum var. cerasiformee0
- Treatment
- stress-inducede0
- Outcome
- glycine betainee1
- Direction
- accumulatione0
- Qualifier
- lower concentration than that of prolinee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the stress-induced accumulation of this osmolyte was detected in cherry tomato, albeit at lower concentration than that of proline”
e1“tomato does not synthesize glycine betaine”
Claim · model-written summary
Stress treatments decreased total sugar levels.
- Taxon
- Cherry TomatoSolanum lycopersicum var. cerasiformet0
- Treatment
- stress-treatede0
- Outcome
- Total sugars levelse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total sugars levels, on the contrary, decreased in stress-treated plants”
t0“Cherry Tomato”
Claim · model-written summary
Both stresses significantly increased malondialdehyde content.
- Taxon
- Cherry TomatoSolanum lycopersicum var. cerasiformet0
- Treatment
- Both stress treatmentse0
- Outcome
- malondialdehyde (MDA) contentse0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both stress treatments caused secondary oxidative stress in the plants, as indicated by a significant increase in malondialdehyde (MDA) contents”
t0“Cherry Tomato”
Claim · model-written summary
Water stress increased leaf phenolics and flavonoid contents.
- Taxon
- Cherry TomatoSolanum lycopersicum var. cerasiformet0
- Organ / stage
- leavese0
- Treatment
- Water stresse0
- Outcome
- total phenolics and flavonoid contentse0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water stress led to an increase in total phenolics and flavonoid contents and a reduction of carotenoid levels in the leaves”
t0“Cherry Tomato”
Claim · model-written summary
Water stress reduced leaf carotenoid levels.
- Taxon
- Cherry TomatoSolanum lycopersicum var. cerasiformet0
- Organ / stage
- leavese0
- Treatment
- Water stresse0
- Outcome
- carotenoid levelse0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water stress led to an increase in total phenolics and flavonoid contents and a reduction of carotenoid levels in the leaves”
t0“Cherry Tomato”
Claim · model-written summary
High salinity increased flavonoids.
- Taxon
- Cherry TomatoSolanum lycopersicum var. cerasiformet0
- Treatment
- high salinity conditionse0
- Outcome
- flavonoidse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“flavonoids also increased under high salinity conditions”
t0“Cherry Tomato”
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See all 35 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.