Abstract
The effects of waterlogging and salinity (25 or 325 mol m 3 NaCl) stressors on the anatomy and metabolism of the marsh grasses 5. alterniflora Loisel. and S. patens Aiton (Muhl.) were investigated in a V factorial greenhouse experiment over 30 d. Waterlogging and salinity in combination resulted in anatomical and metabolic responses in both species. Waterlogging reduced soil redox potential and decreased root-specific gravity significantly in both species. The inadequacy of aerenchyma development under hypoxia to support aerobic root respiration in S. patens was indicated by significant increases in root alcohol dehydrogenase (ADH) activity of 1,752% and 420%, respectively, in the low and high salinity treatments. ADH activity was not increased significantly by flooding of S. alterniflora. Proline concentrations in roots and leaves were low at low salinities and increased significantly at high salinities in both species, but only under drained conditions. Decrease in leaf elongation by high salinity occurred in drained, but not flooded treatments in both species. Under flooded conditions, leaf elongation was significantly greater in S. alterniflora than S. patens. Greatest leaf elongation occurred in flooded low salinity S. alterniflora plants that had the least proline. Although both species are adapted to waterlogging and salinity, S. alterniflora appears to be more tolerant of reducing soil conditions and less responsive to higher salinity than S. patens.
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Claims 13
Claim · model-written summary
Waterlogging and salinity in combination produced anatomical and metabolic responses in both marsh grasses.
Verbatim
e0“the marsh grasses 5. alterniflora Loisel. and S. patens Aiton (Muhl.)”
e1“Waterlogging and salinity in combination resulted in anatomical and metabolic responses in both species”
Claim · model-written summary
Waterlogging reduced soil redox potential in both marsh grasses.
Not reportedComparator
Verbatim
e0“the marsh grasses 5. alterniflora Loisel. and S. patens Aiton (Muhl.)”
e2“Waterlogging reduced soil redox potential and decreased root-specific gravity significantly in both species”
Claim · model-written summary
Waterlogging significantly decreased root-specific gravity in both marsh grasses.
Not reportedComparator
Verbatim
e0“the marsh grasses 5. alterniflora Loisel. and S. patens Aiton (Muhl.)”
e2“Waterlogging reduced soil redox potential and decreased root-specific gravity significantly in both species”
Claim · model-written summary
In S. patens, root ADH activity increased significantly by 1,752% under low salinity with hypoxia.
- Taxon
- S. patens
Sporobolus pumiluse3 - Treatment
- low and high salinity treatmentse3
- Outcome
- root alcohol dehydrogenase (ADH) activitye3
- Direction
- increasese3
- Value
- 1,752%e3
- Qualifier
- respectivelye3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“The inadequacy of aerenchyma development under hypoxia to support aerobic root respiration in S. patens was indicated by significant increases in root alcohol dehydrogenase (ADH) activity of 1,752% and 420%, respectively, in the low and high salinity treatments”
Claim · model-written summary
In S. patens, root ADH activity increased significantly by 420% under high salinity with hypoxia.
- Taxon
- S. patensSporobolus pumiluse3
- Treatment
- high salinitye3
- Outcome
- root alcohol dehydrogenase (ADH) activitye3
- Direction
- increasese3
- Value
- 420%e3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“The inadequacy of aerenchyma development under hypoxia to support aerobic root respiration in S. patens was indicated by significant increases in root alcohol dehydrogenase (ADH) activity of 1,752% and 420%, respectively, in the low and high salinity treatments”
Claim · model-written summary
Flooding did not significantly increase root ADH activity in S. alterniflora.
- Taxon
- S. alterniflora
Sporobolus alternifloruse4 - Treatment
- floodinge4
- Outcome
- ADH activitye4
- Direction
- not increasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“ADH activity was not increased significantly by flooding of S. alterniflora”
Claim · model-written summary
Proline concentrations in roots and leaves increased at high salinities relative to low salinities in both marsh grasses, only under drained conditions.
Verbatim
e0“the marsh grasses 5. alterniflora Loisel. and S. patens Aiton (Muhl.)”
e5“Proline concentrations in roots and leaves were low at low salinities and increased significantly at high salinities in both species, but only under drained conditions”
Claim · model-written summary
Proline concentrations in roots and leaves were low at low salinities in both marsh grasses.
- Taxon
- marsh grassese0
- Treatment
- low salinitiese5
- Outcome
- Proline concentrations in roots and leavese5
- Direction
- lowe5
Not reportedComparator
Verbatim
e0“the marsh grasses 5. alterniflora Loisel. and S. patens Aiton (Muhl.)”
e5“Proline concentrations in roots and leaves were low at low salinities and increased significantly at high salinities in both species, but only under drained conditions”
Claim · model-written summary
High salinity decreased leaf elongation in drained but not flooded treatments in both marsh grasses.
- Taxon
- marsh grassese0
- Treatment
- high salinitye6
- Outcome
- leaf elongatione6
- Direction
- Decreasee6
- Qualifier
- drained, but not flooded treatmentse6
Not reportedComparator
Verbatim
e0“the marsh grasses 5. alterniflora Loisel. and S. patens Aiton (Muhl.)”
e6“Decrease in leaf elongation by high salinity occurred in drained, but not flooded treatments in both species”
Claim · model-written summary
Under flooded conditions, leaf elongation was significantly greater in S. alterniflora than in S. patens.
- Taxon
- S. alternifloraSporobolus alternifloruse7
- Treatment
- flooded conditionse7
- Outcome
- leaf elongatione7
- Direction
- greatere7
- Comparator
- S. patense7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Under flooded conditions, leaf elongation was significantly greater in S. alterniflora than S. patens”
Claim · model-written summary
Greatest leaf elongation occurred in flooded low-salinity S. alterniflora plants with the least proline.
- Taxon
- S. alternifloraSporobolus alternifloruse7
- Treatment
- flooded low salinitye7
- Compound
- prolinee7
- Outcome
- leaf elongatione7
- Direction
- Greateste7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Greatest leaf elongation occurred in flooded low salinity S. alterniflora plants that had the least proline”
Claim · model-written summary
S. alterniflora appears more tolerant of reducing soil conditions than S. patens.
- Taxon
- S. alternifloraSporobolus alternifloruse7
- Outcome
- tolerant of reducing soil conditionse7
- Direction
- more tolerante7
- Comparator
- S. patense7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“S. alterniflora appears to be more tolerant of reducing soil conditions and less responsive to higher salinity than S. patens”
Claim · model-written summary
S. alterniflora appears less responsive to higher salinity than S. patens.
- Taxon
- S. alternifloraSporobolus alternifloruse7
- Treatment
- higher salinitye7
- Outcome
- responsive to higher salinitye7
- Direction
- less responsivee7
- Comparator
- S. patense7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“S. alterniflora appears to be more tolerant of reducing soil conditions and less responsive to higher salinity than S. patens”
The same questions in other papers
flooding · growth · Sporobolus alterniflorus (smooth cordgrass)Positive and negative results
3 papers in the same direction as this paper · 4 in the opposite direction
- negative
- negative
- negative
4 papers more in this group
See all 8 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.