Abstract
Variation in soil salt may change the stoichiometry of a halophyte by altering plant ecophysiology, and exert different influences on various plant organs, which has potentially important consequences for the nutrition of consumers as well as nutrient cycling in a saline ecosystem. Using a greenhouse pot experiment, we investigated the effect of salinity variability on the growth and stoichiometry of different organs of Suaeda glauca and Salicornia europaea - two dominant species of important ecological and economic value in the saline ecosystem. Our results showed that appropriate salt stimulated the growth of both species during the vigorous growth period, while high salt suppressed growth. Na significantly increased with increased salt in the culture, whereas concentrations of other measured elements and K:Na ratio for both species significantly decreased at low salt treatments, and became more gradual under higher salt conditions. Furthermore, with the change of salt in culture, variations in leaf (degenerated leaf for S. europaea, considered as young stem) stoichiometry, except N:P ratio, were large and less in stems (old stems for S. europaea) than in roots, reflecting physiological and biochemical reactions in the leaf in response to salt stress, supported by sharp changes in trends. These results suggest that appropriate saline conditions can enhance biological C fixation of halophytes; however, increasing salt could affect consumer health and decrease cycling of other nutrients in saline ecosystems.
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Claims 8
Claim · model-written summary
Appropriate salt stimulated Suaeda glauca growth during vigorous growth.
- Taxon
- Suaeda glauca
Suaeda glaucae1 - Organ / stage
- vigorous growth periode0
- Treatment
- appropriate salte0
- Outcome
- growthe0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“appropriate salt stimulated the growth of both species during the vigorous growth period”
e1“Suaeda glauca and Salicornia europaea”
Claim · model-written summary
Appropriate salt stimulated Salicornia europaea growth during vigorous growth.
- Taxon
- Salicornia europaea
_01.jpg?width=60)
Salicornia europaeae1 - Organ / stage
- vigorous growth periode0
- Treatment
- appropriate salte0
- Outcome
- growthe0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_01.jpg?width=500)
Verbatim
e0“appropriate salt stimulated the growth of both species during the vigorous growth period”
e1“Suaeda glauca and Salicornia europaea”
Claim · model-written summary
High salt suppressed Suaeda glauca growth.
- Taxon
- Suaeda glaucaSuaeda glaucae1
- Treatment
- high salte0
- Outcome
- growthe0
- Direction
- suppressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high salt suppressed growth”
e1“Suaeda glauca and Salicornia europaea”
Claim · model-written summary
High salt suppressed Salicornia europaea growth.
- Taxon
- Salicornia europaeaSalicornia europaeae1
- Treatment
- high salte0
- Outcome
- growthe0
- Direction
- suppressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high salt suppressed growth”
e1“Suaeda glauca and Salicornia europaea”
Claim · model-written summary
Na increased with increasing culture salt in both halophytes.
- Taxon
- Suaeda glauca and Salicornia europaeaSalicornia europaeaSuaeda glaucae1
- Treatment
- salte0
- Outcome
- Nae0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Na significantly increased with increased salt in the culture”
e1“Suaeda glauca and Salicornia europaea”
Claim · model-written summary
Other measured elements and K:Na ratio decreased at low salt treatments in both species, with more gradual changes at higher salt.
- Taxon
- Suaeda glauca and Salicornia europaeaSalicornia europaeaSuaeda glaucae1
- Treatment
- low salt treatmentse0
- Outcome
- concentrations of other measured elements and K:Na ratioe0
- Direction
- decreasede0
- Qualifier
- more gradual under higher salt conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“concentrations of other measured elements and K:Na ratio for both species significantly decreased at low salt treatments, and became more gradual under higher salt conditions”
e1“Suaeda glauca and Salicornia europaea”
Claim · model-written summary
Leaf stoichiometry varied strongly with salt, except N:P ratio, while stem variation was lower than root variation.
- Taxon
- S. europaeaSalicornia europaeae0
- Organ / stage
- leafe0
- Outcome
- stoichiometrye0
- Qualifier
- except N:P ratioe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“variations in leaf (degenerated leaf for S. europaea, considered as young stem) stoichiometry, except N:P ratio, were large and less in stems (old stems for S. europaea) than in roots”
Claim · model-written summary
The authors infer appropriate saline conditions can enhance biological C fixation.
Verbatim
e0“appropriate saline conditions can enhance biological C fixation of halophytes”
The same questions in other papers
salinity · growth · Suaeda glaucaPositive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- negative
- positive
salinity · growth · Salicornia europaea (common glasswort)Positive and negative results
6 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- negative
- negative
6 papers more in this group
See all 10 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.