Abstract
Salicornia europaea seedlings were examined for their performance under different salt-ion stresses(-0.88 MPa,Na+,Cl-,NaCl) and for their tolerance to a wide range of NaCl concentrations(100-1 000 mmol/L) in the laboratory.The distributions of salts and ionic absorption in S.europaea under 100-1 000 mmol/L NaCl treatments were also studied.Treatments with different salts of the same osmotic potential for 12 days all promoted growth of S.europaea seedlings,with the best effect from the NaCl treatment.When plants were treated for 24 days,growth of S.europaea seedlings was still stimulated under treatments of Cl-alone or NaCl,while growth was inhibited under Na+stress.The growth under NaCl was much better than that under the Cl-alone treatment,suggesting that both Na+and Cl-were beneficial elements for the growth of S.europaea seedlings.Our results also showed that 300-400 mmol/L NaCl was the optimum concentration for growth.K+content in roots did not show significant change at less than 100-200 mmol/L NaCl,and Na+content in roots did not change at less than 100 mmol/L NaCl.As NaCl concentration was increased( 200 mmol/L),K+content in roots decreased markedly.When NaCl was above 700 mmol/L,K+content in roots did not decrease further.Root SK,Na increased greatly with an increase in NaCl concentration,suggesting that K+absorptive selectivity was higher under NaCl treatments.In S.europaea shoots,K+content was decreased at low concentrations of NaCl but did not decrease further when NaCl in the medium exceeded 200 mmol/L.The results suggested that maintaining K+homeostasis was a notable characteristic of S.europaea shoots.We conclude that an increase in K+absorptive selectivity in roots and maintenance of K+homeostasis in shoots may contribute to S.europaea's tolerance to high salt concentrations,implying the existence of unique Na+,K+absorptive carriers or channel systems in S.europaea.
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Claims 17
Claim · model-written summary
At equal osmotic potential, all salt treatments promoted seedling growth after 12 days.
- Taxon
- S.europaea
_01.jpg?width=60)
Salicornia europaeae0 - Treatment
- different salts of the same osmotic potentiale0
- Outcome
- growth of S.europaea seedlingse0
- Direction
- promotede0
- Qualifier
- for 12 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_01.jpg?width=500)
Verbatim
e0“Treatments with different salts of the same osmotic potential for 12 days all promoted growth of S.europaea seedlings,with the best effect from the NaCl treatment.”
Claim · model-written summary
NaCl produced the best seedling growth response after 12 days.
- Taxon
- S.europaeaSalicornia europaeae0
- Treatment
- NaCl treatmente0
- Outcome
- growth of S.europaea seedlingse0
- Direction
- beste0
- Comparator
- different salts of the same osmotic potentiale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatments with different salts of the same osmotic potential for 12 days all promoted growth of S.europaea seedlings,with the best effect from the NaCl treatment.”
Claim · model-written summary
Cl-alone treatment stimulated seedling growth after 24 days.
- Taxon
- S.europaeaSalicornia europaeae0
- Treatment
- Cl-alonee0
- Outcome
- growth of S.europaea seedlingse0
- Direction
- stimulatede0
- Qualifier
- 24 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When plants were treated for 24 days,growth of S.europaea seedlings was still stimulated under treatments of Cl-alone or NaCl,while growth was inhibited under Na+stress.”
Claim · model-written summary
NaCl stimulated seedling growth after 24 days.
- Taxon
- S.europaeaSalicornia europaeae0
- Treatment
- NaCle0
- Outcome
- growth of S.europaea seedlingse0
- Direction
- stimulatede0
- Qualifier
- 24 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When plants were treated for 24 days,growth of S.europaea seedlings was still stimulated under treatments of Cl-alone or NaCl,while growth was inhibited under Na+stress.”
Claim · model-written summary
Na+ stress inhibited seedling growth after 24 days.
- Taxon
- S.europaeaSalicornia europaeae0
- Treatment
- Na+stresse0
- Outcome
- growthe0
- Direction
- inhibitede0
- Qualifier
- 24 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When plants were treated for 24 days,growth of S.europaea seedlings was still stimulated under treatments of Cl-alone or NaCl,while growth was inhibited under Na+stress.”
Claim · model-written summary
Growth under NaCl exceeded growth under Cl-alone treatment.
- Taxon
- Salicornia europaeaSalicornia europaeat0
- Treatment
- NaCle0
- Outcome
- growthe0
- Direction
- much bettere0
- Comparator
- Cl-alone treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The growth under NaCl was much better than that under the Cl-alone treatment”
t0“Salicornia europaea seedlings”
Claim · model-written summary
The optimum NaCl concentration for growth was 300-400 mmol/L.
- Taxon
- Salicornia europaeaSalicornia europaeat0
- Treatment
- NaCle0
- Outcome
- optimum concentration for growthe0
- Direction
- optimume0
- Value
- 300-400 mmol/Le0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Our results also showed that 300-400 mmol/L NaCl was the optimum concentration for growth.”
t0“Salicornia europaea seedlings”
Claim · model-written summary
Root K+ content did not significantly change below 100-200 mmol/L NaCl.
- Taxon
- Salicornia europaeaSalicornia europaeat0
- Treatment
- less than 100-200 mmol/L NaCle0
- Outcome
- K+content in rootse0
- Direction
- did not show significant changee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“K+content in roots did not show significant change at less than 100-200 mmol/L NaCl”
t0“Salicornia europaea seedlings”
Claim · model-written summary
Root Na+ content did not change below 100 mmol/L NaCl.
- Taxon
- Salicornia europaeaSalicornia europaeat0
- Treatment
- less than 100 mmol/L NaCle0
- Outcome
- Na+content in rootse0
- Direction
- did not changee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Na+content in roots did not change at less than 100 mmol/L NaCl.”
t0“Salicornia europaea seedlings”
Claim · model-written summary
Root K+ content decreased markedly as NaCl concentration increased above 200 mmol/L.
- Taxon
- Salicornia europaeaSalicornia europaeat0
- Treatment
- NaCl concentration was increased( 200 mmol/L)e0
- Outcome
- K+content in rootse0
- Direction
- decreased markedlye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As NaCl concentration was increased( 200 mmol/L),K+content in roots decreased markedly.”
t0“Salicornia europaea seedlings”
Claim · model-written summary
Root K+ content did not decline further above 700 mmol/L NaCl.
- Taxon
- Salicornia europaeaSalicornia europaeat0
- Treatment
- NaCl was above 700 mmol/Le0
- Outcome
- K+content in rootse0
- Direction
- did not decrease furthere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When NaCl was above 700 mmol/L,K+content in roots did not decrease further.”
t0“Salicornia europaea seedlings”
Claim · model-written summary
Root SK,Na increased greatly with increasing NaCl concentration.
- Taxon
- Salicornia europaeaSalicornia europaeat0
- Treatment
- NaCl concentratione0
- Outcome
- Root SK,Nae0
- Direction
- increased greatlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root SK,Na increased greatly with an increase in NaCl concentration”
t0“Salicornia europaea seedlings”
Claim · model-written summary
Shoot K+ content decreased at low NaCl concentrations.
- Taxon
- S.europaeaSalicornia europaeae0
- Organ / stage
- shootse0
- Treatment
- low concentrations of NaCle0
- Outcome
- K+contente0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In S.europaea shoots,K+content was decreased at low concentrations of NaCl”
Claim · model-written summary
Shoot K+ content did not decrease further above 200 mmol/L NaCl.
- Taxon
- Salicornia europaeaSalicornia europaeat0
- Treatment
- NaCl in the medium exceeded 200 mmol/Le0
- Outcome
- K+contente0
- Direction
- did not decrease furthere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In S.europaea shoots,K+content was decreased at low concentrations of NaCl but did not decrease further when NaCl in the medium exceeded 200 mmol/L.”
t0“Salicornia europaea seedlings”
Claim · model-written summary
Maintenance of shoot K+ homeostasis was a notable feature.
- Taxon
- S.europaeaSalicornia europaeae0
- Organ / stage
- shootse0
- Outcome
- maintaining K+homeostasise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maintaining K+homeostasis was a notable characteristic of S.europaea shoots.”
Claim · model-written summary
The authors propose that root K+ selectivity and shoot K+ homeostasis contribute to high-salt tolerance.
- Taxon
- S.europaeaSalicornia europaeae0
- Outcome
- S.europaea's tolerance to high salt concentrationse0
- Qualifier
- an increase in K+absorptive selectivity in roots and maintenance of K+homeostasis in shootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“an increase in K+absorptive selectivity in roots and maintenance of K+homeostasis in shoots may contribute to S.europaea's tolerance to high salt concentrations”
Claim · model-written summary
The authors infer that unique Na+ and K+ transport systems may exist in Salicornia.
- Taxon
- S.europaeaSalicornia europaeae0
- Outcome
- existence of unique Na+,K+absorptive carriers or channel systemse0
- Qualifier
- implyinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“implying the existence of unique Na+,K+absorptive carriers or channel systems in S.europaea.”
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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.