Abstract
NaCl (140 m M ) was applied to 14‐day‐old plants of salt‐sensitive Lycopersicon esculentum Mill. cv. Volgogradskij and its wild relative L. pimpinellifolium Mill. accession PE‐2. Changes in the relative growth rate of whole plant, and in the levels of inorganic and organic solutes in leaves, stems and roots were followed for 15 days after the application. Short‐term salt exposure (4–6 days of salinization) resulted in enhanced relative growth rates for L. pimpinellifolium , but did not affect growth of L. esculentum , After 6 days of salinization, the relative growth rates of both species decreased significantly; leading to practically comparable growth rates for them by day 15. In all parts of both species, the contribution of organic solutes to the osmotic potential (Ψ s ) gradually decreased from 30% on day 0 to a value lower than 5% on day 4. In L. pimpinellifolium , compared to L. esculentum , short‐term salt exposure resulted in (1) a higher percentage of adjustment of Ψ s ; and (2) increases in Na + and K + uptake rates, and in the levels of organic acids and proline (the level of which reached that of sugars, i.e., 10 μmol g ‐1 dry weight. Conversely, in L. esculentum , drastic reductions of K + uptake rates and organic acid levels occurred already on day 1. During long‐term salt exposure, both species were able to adjust osmotically and both exhibited decreases in organic acid levels as well as in K + uptake and accumulation rates in all parts. The results are discussed in an attempt to explain the adaptive responses during short‐term salt exposure and the metabolic dysfunctions that lead to growth decrease after long‐term exposure to salt.
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Claims 15
Claim · model-written summary
Short salt exposure enhanced relative growth rates in L. pimpinellifolium.
- Taxon
- L. pimpinellifolium
Solanum pimpinellifoliume0 - Treatment
- Short‐term salt exposuree0
- Outcome
- relative growth ratese0
- Direction
- enhancede0
- Qualifier
- 4–6 days of salinizatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Short‐term salt exposure (4–6 days of salinization) resulted in enhanced relative growth rates for L. pimpinellifolium”
Claim · model-written summary
Short salt exposure did not affect growth of L. esculentum.
- Taxon
- L. esculentum
Solanum lycopersicume0 - Treatment
- Short‐term salt exposuree1
- Outcome
- growthe0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but did not affect growth of L. esculentum”
e1“Short‐term salt exposure (4–6 days of salinization) resulted in enhanced relative growth rates for L. pimpinellifolium”
Claim · model-written summary
After 6 days, relative growth rates decreased significantly in both species, becoming comparable by day 15.
- Taxon
- Lycopersicon pimpinellifolium and L. esculentumSolanum lycopersicumSolanum pimpinellifoliumt0
- Treatment
- 6 days of salinizatione0
- Outcome
- relative growth ratese0
- Direction
- decreasede0
- Qualifier
- practically comparable growth rates for them by day 15e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After 6 days of salinization, the relative growth rates of both species decreased significantly; leading to practically comparable growth rates for them by day 15.”
t0“Lycopersicon pimpinellifolium and L. esculentum”
Claim · model-written summary
Organic-solute contribution to osmotic potential fell from 30% to below 5% by day 4 in all plant parts of both species.
- Taxon
- Lycopersicon pimpinellifolium and L. esculentumSolanum lycopersicumSolanum pimpinellifoliumt0
- Treatment
- NaClt0
- Outcome
- contribution of organic solutes to the osmotic potentiale0
- Direction
- decreasede0
- Value
- 30%e0
- Qualifier
- a value lower than 5% on day 4e0
- Comparator
- day 0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In all parts of both species, the contribution of organic solutes to the osmotic potential (Ψ s ) gradually decreased from 30% on day 0 to a value lower than 5% on day 4.”
t0“Lycopersicon pimpinellifolium and L. esculentum during short‐ and long‐term exposures to NaCl”
Claim · model-written summary
Short salt exposure produced a higher percentage of osmotic adjustment in L. pimpinellifolium than L. esculentum.
- Taxon
- L. pimpinellifoliumSolanum pimpinellifoliume0
- Treatment
- short‐term salt exposuree0
- Outcome
- percentage of adjustment of Ψ se0
- Direction
- highere0
- Comparator
- L. esculentume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In L. pimpinellifolium , compared to L. esculentum , short‐term salt exposure resulted in (1) a higher percentage of adjustment of Ψ s”
Claim · model-written summary
Short salt exposure increased Na + uptake rates in L. pimpinellifolium relative to L. esculentum.
- Taxon
- L. pimpinellifoliumSolanum pimpinellifoliume0
- Treatment
- short‐term salt exposuree0
- Outcome
- Na + and K + uptake ratese0
- Direction
- increasese0
- Comparator
- L. esculentume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In L. pimpinellifolium , compared to L. esculentum , short‐term salt exposure resulted in (1) a higher percentage of adjustment of Ψ s ; and (2) increases in Na + and K + uptake rates, and in the levels of organic acids and proline”
Claim · model-written summary
Short salt exposure increased K + uptake rates in L. pimpinellifolium relative to L. esculentum.
- Taxon
- L. pimpinellifoliumSolanum pimpinellifoliume0
- Treatment
- short‐term salt exposuree0
- Outcome
- K + uptake ratese0
- Direction
- increasese0
- Comparator
- L. esculentume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In L. pimpinellifolium , compared to L. esculentum , short‐term salt exposure resulted in (1) a higher percentage of adjustment of Ψ s ; and (2) increases in Na + and K + uptake rates, and in the levels of organic acids and proline”
Claim · model-written summary
Short salt exposure increased organic acid levels in L. pimpinellifolium relative to L. esculentum.
- Taxon
- L. pimpinellifoliumSolanum pimpinellifoliume0
- Treatment
- short‐term salt exposuree0
- Outcome
- levels of organic acidse0
- Direction
- increasese0
- Comparator
- L. esculentume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In L. pimpinellifolium , compared to L. esculentum , short‐term salt exposure resulted in (1) a higher percentage of adjustment of Ψ s ; and (2) increases in Na + and K + uptake rates, and in the levels of organic acids and proline”
Claim · model-written summary
Short salt exposure increased proline in L. pimpinellifolium to the level of sugars.
- Taxon
- L. pimpinellifoliumSolanum pimpinellifoliume1
- Treatment
- short‐term salt exposuree1
- Outcome
- prolinee0
- Direction
- increasese1
- Value
- 10 μmol g ‐1 dry weighte0
- Comparator
- sugarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the levels of organic acids and proline (the level of which reached that of sugars, i.e., 10 μmol g ‐1 dry weight.”
e1“In L. pimpinellifolium , compared to L. esculentum , short‐term salt exposure resulted in (1) a higher percentage of adjustment of Ψ s ; and (2) increases in Na + and K + uptake rates, and in the levels of organic acids and proline”
Claim · model-written summary
K + uptake rates fell drastically in L. esculentum by day 1.
- Taxon
- L. esculentumSolanum lycopersicume0
- Treatment
- NaClt0
- Outcome
- K + uptake ratese0
- Direction
- reductionse0
- Qualifier
- day 1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Conversely, in L. esculentum , drastic reductions of K + uptake rates and organic acid levels occurred already on day 1.”
t0“exposures to NaCl”
Claim · model-written summary
Organic acid levels fell drastically in L. esculentum by day 1.
- Taxon
- L. esculentumSolanum lycopersicume0
- Treatment
- NaClt0
- Outcome
- organic acid levelse0
- Direction
- reductionse0
- Qualifier
- day 1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Conversely, in L. esculentum , drastic reductions of K + uptake rates and organic acid levels occurred already on day 1.”
t0“exposures to NaCl”
Claim · model-written summary
Both species adjusted osmotically during long salt exposure.
- Taxon
- Lycopersicon pimpinellifolium and L. esculentumSolanum lycopersicumSolanum pimpinellifoliumt0
- Treatment
- long‐term salt exposuree0
- Outcome
- adjust osmoticallye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During long‐term salt exposure, both species were able to adjust osmotically”
t0“Lycopersicon pimpinellifolium and L. esculentum”
Claim · model-written summary
Organic acid levels decreased in both species during long salt exposure.
- Taxon
- Lycopersicon pimpinellifolium and L. esculentumSolanum lycopersicumSolanum pimpinellifoliumt0
- Treatment
- long‐term salt exposuree0
- Outcome
- organic acid levelse0
- Direction
- decreasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During long‐term salt exposure, both species were able to adjust osmotically and both exhibited decreases in organic acid levels as well as in K + uptake and accumulation rates in all parts.”
t0“Lycopersicon pimpinellifolium and L. esculentum”
Claim · model-written summary
K + uptake rates decreased in both species during long salt exposure.
- Taxon
- Lycopersicon pimpinellifolium and L. esculentumSolanum lycopersicumSolanum pimpinellifoliumt0
- Treatment
- long‐term salt exposuree0
- Outcome
- K + uptakee0
- Direction
- decreasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During long‐term salt exposure, both species were able to adjust osmotically and both exhibited decreases in organic acid levels as well as in K + uptake and accumulation rates in all parts.”
t0“Lycopersicon pimpinellifolium and L. esculentum”
Claim · model-written summary
K + accumulation rates decreased in both species during long salt exposure.
- Taxon
- Lycopersicon pimpinellifolium and L. esculentumSolanum lycopersicumSolanum pimpinellifoliumt0
- Treatment
- long‐term salt exposuree0
- Outcome
- accumulation ratese0
- Direction
- decreasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During long‐term salt exposure, both species were able to adjust osmotically and both exhibited decreases in organic acid levels as well as in K + uptake and accumulation rates in all parts.”
t0“Lycopersicon pimpinellifolium and L. esculentum”
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