Abstract
Salinity stress results in a clear stunting of plants,and disturbances in ion homeostasis.There are many different types of salts and almost an equally diverse set of constraints for plant growth.For ecological reconstruction in the coast of Lingang(30°54' N,121°52' E)in Shanghai,the seedling growth and ion distribution in different tissues of Festuca arundinacea were studied in pot experiments,which have the same salt constitute as the coastal saline soil.Seed emergence of Festuca arundinacea was carried out under non-saline environment for about 5 days.A group of different concentrations of NaCl were then added to the pots and the salinity was maintained at 0,50,100,150,200,300 mmol/L and 400 mmol/L.The seedling growth,water content,and ions concentration of different tissues were analyzed after 15 days of salt-stress cultivation.A negative relationship between seedling growth and salt concentration was obtained.The flesh weight,dry weight and water content of shoot and root did not decrease significantly in response to low salinity.However,high concentrations of NaCl lead to detrimental effects on the growth of Festuca arundinacea,but the roots of this plant were maintained normally.Ion uptake and homeostasis were disturbed under high salinity.Increased treatment of NaCl induces increase in Na+ and decrease in Ca2+ and K+ levels in the roots and shoots.Mg2+ concentration in roots and shoots does not vary with the concentration of Na+.The ratios of K/Na,Ca/Na and Mg/Na in roots and shoots decrease with increased salinity.
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Claims 9
Claim · model-written summary
Seedling growth declined as salt concentration increased.
- Taxon
- Festuca arundinacea
Lolium arundinaceumt0 - Treatment
- salt concentratione0
- Outcome
- seedling growthe0
- Direction
- negativee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A negative relationship between seedling growth and salt concentration was obtained”
t0“Festuca arundinacea”
Claim · model-written summary
Low salinity did not significantly reduce shoot and root fresh and dry weight or water content.
- Taxon
- Festuca arundinaceaLolium arundinaceumt0
- Treatment
- low salinitye0
- Outcome
- flesh weight,dry weight and water content of shoot and roote0
- Direction
- did not decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The flesh weight,dry weight and water content of shoot and root did not decrease significantly in response to low salinity”
t0“Festuca arundinacea”
Claim · model-written summary
High NaCl concentrations harmed Festuca growth.
- Taxon
- Festuca arundinaceaLolium arundinaceume0
- Treatment
- high concentrations of NaCle0
- Outcome
- growthe0
- Direction
- detrimentale0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high concentrations of NaCl lead to detrimental effects on the growth of Festuca arundinacea”
Claim · model-written summary
Roots remained normal under high NaCl.
- Taxon
- Festuca arundinaceaLolium arundinaceumt0
- Outcome
- roots of this plant were maintained normallye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but the roots of this plant were maintained normally”
t0“Festuca arundinacea”
Claim · model-written summary
High salinity disturbed ion uptake and homeostasis.
- Taxon
- Festuca arundinaceaLolium arundinaceumt0
- Treatment
- high salinitye0
- Outcome
- Ion uptake and homeostasise0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ion uptake and homeostasis were disturbed under high salinity”
t0“Festuca arundinacea”
Claim · model-written summary
Increasing NaCl raised Na+ in roots and shoots.
- Taxon
- Festuca arundinaceaLolium arundinaceumt0
- Organ / stage
- roots and shootse0
- Treatment
- NaCle0
- Outcome
- Na+e0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased treatment of NaCl induces increase in Na+ and decrease in Ca2+ and K+ levels in the roots and shoots”
t0“Festuca arundinacea”
Claim · model-written summary
Increasing NaCl lowered Ca2+ and K+ levels in roots and shoots.
- Taxon
- Festuca arundinaceaLolium arundinaceumt0
- Organ / stage
- roots and shootse0
- Treatment
- NaCle0
- Outcome
- Ca2+ and K+ levelse0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased treatment of NaCl induces increase in Na+ and decrease in Ca2+ and K+ levels in the roots and shoots”
t0“Festuca arundinacea”
Claim · model-written summary
Root and shoot Mg2+ concentration did not vary with Na+ concentration.
- Taxon
- Festuca arundinaceaLolium arundinaceumt0
- Organ / stage
- roots and shootse0
- Compound
- Na+e0
- Outcome
- Mg2+ concentratione0
- Direction
- does not varye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mg2+ concentration in roots and shoots does not vary with the concentration of Na+”
t0“Festuca arundinacea”
Claim · model-written summary
K/Na, Ca/Na, and Mg/Na ratios fell with increasing salinity.
- Taxon
- Festuca arundinaceaLolium arundinaceumt0
- Organ / stage
- roots and shootse0
- Treatment
- increased salinitye0
- Outcome
- ratios of K/Na,Ca/Na and Mg/Nae0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The ratios of K/Na,Ca/Na and Mg/Na in roots and shoots decrease with increased salinity”
t0“Festuca arundinacea”
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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.