Abstract
Salinity is one of the greatest environmental challenges facing plant growth and development in the 21st century. Salicylic acid (SA) is a phenolic compound and signal molecule involved in the regulation of plants responses to biotic and abiotic stresses. This greenhouse experiment was conducted to determine effects of SA application on Kentucky bluegrass (Poa pratensis L.) responses to salinity stress. The three salinity levels (0, 40 and 80 mM NaCl) were applied in nutrient solutions, and foliar SA treatments (0, 1 and 2 mM) were applied at 2-weeks intervals. The study was carried out as a factorial experiment based on completely randomized experimental design with four replications. Salinity reduced root and shoot dry weight, visual turf quality, leaf chlorophyll and potassium content, whereas electrolyte leakage, proline and sodium content were increased with salt concentration in nutrient solution. Salicylic acid application ameliorates adverse effects of salinity in all factors and this effect was more pronounced in 80 mM NaCl. In terms of root dry weight, leaf sodium and proline content as well as electrolyte leakage, SA application at 2 mM had better results than 1 mM. These results suggest that further studies are required to find proper SA application rate in different salinity levels.
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Claims 7
Claim · model-written summary
Salinity reduced root and shoot dry weight of Kentucky bluegrass.
- Taxon
- Kentucky bluegrass
.jpg?width=60)
Poa pratensise0 - Treatment
- Salinitye1
- Outcome
- root and shoot dry weighte1
- Direction
- reducede1
- Setting
- greenhouse experimente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“This greenhouse experiment was conducted to determine effects of SA application on Kentucky bluegrass (Poa pratensis L.) responses to salinity stress”
e1“Salinity reduced root and shoot dry weight”
Claim · model-written summary
Salinity reduced visual turf quality of Kentucky bluegrass.
- Taxon
- Kentucky bluegrassPoa pratensise0
- Treatment
- Salinitye1
- Outcome
- visual turf qualitye1
- Direction
- reducede1
- Setting
- greenhouse experimente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This greenhouse experiment was conducted to determine effects of SA application on Kentucky bluegrass (Poa pratensis L.) responses to salinity stress”
e1“Salinity reduced root and shoot dry weight, visual turf quality”
Claim · model-written summary
Salinity reduced leaf chlorophyll and potassium content of Kentucky bluegrass.
- Taxon
- Kentucky bluegrassPoa pratensise0
- Treatment
- Salinitye1
- Outcome
- leaf chlorophyll and potassium contente1
- Direction
- reducede1
- Setting
- greenhouse experimente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This greenhouse experiment was conducted to determine effects of SA application on Kentucky bluegrass (Poa pratensis L.) responses to salinity stress”
e1“Salinity reduced root and shoot dry weight, visual turf quality, leaf chlorophyll and potassium content”
Claim · model-written summary
Salt concentration increased electrolyte leakage, proline and sodium content of Kentucky bluegrass.
- Taxon
- Kentucky bluegrassPoa pratensise0
- Treatment
- salt concentration in nutrient solutione1
- Outcome
- electrolyte leakage, proline and sodium contente1
- Direction
- increasede1
- Setting
- greenhouse experimente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This greenhouse experiment was conducted to determine effects of SA application on Kentucky bluegrass (Poa pratensis L.) responses to salinity stress”
e1“whereas electrolyte leakage, proline and sodium content were increased with salt concentration in nutrient solution”
Claim · model-written summary
Salicylic acid application ameliorated the adverse effects of salinity in all measured factors, more pronounced at 80 mM NaCl.
- Taxon
- Kentucky bluegrassPoa pratensise0
- Treatment
- Salicylic acid applicatione2
- Outcome
- adverse effects of salinitye2
- Direction
- amelioratese2
- Qualifier
- more pronounced in 80 mM NaCle2
- Setting
- greenhouse experimente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This greenhouse experiment was conducted to determine effects of SA application on Kentucky bluegrass (Poa pratensis L.) responses to salinity stress”
e2“Salicylic acid application ameliorates adverse effects of salinity in all factors and this effect was more pronounced in 80 mM NaCl”
Claim · model-written summary
Salicylic acid at 2 mM gave better root dry weight than 1 mM.
- Taxon
- Kentucky bluegrassPoa pratensise0
- Treatment
- SA application at 2 mMe3
- Outcome
- root dry weighte3
- Direction
- better resultse3
- Comparator
- 1 mMe3
- Setting
- greenhouse experimente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This greenhouse experiment was conducted to determine effects of SA application on Kentucky bluegrass (Poa pratensis L.) responses to salinity stress”
e3“In terms of root dry weight, leaf sodium and proline content as well as electrolyte leakage, SA application at 2 mM had better results than 1 mM”
Claim · model-written summary
Salicylic acid at 2 mM gave better leaf sodium, proline and electrolyte leakage values than 1 mM.
- Taxon
- Kentucky bluegrassPoa pratensise0
- Treatment
- SA application at 2 mMe3
- Outcome
- leaf sodium and proline content as well as electrolyte leakagee3
- Direction
- better resultse3
- Comparator
- 1 mMe3
- Setting
- greenhouse experimente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This greenhouse experiment was conducted to determine effects of SA application on Kentucky bluegrass (Poa pratensis L.) responses to salinity stress”
e3“In terms of root dry weight, leaf sodium and proline content as well as electrolyte leakage, SA application at 2 mM had better results than 1 mM”
The same questions in other papers
salicylic acid · physiology: oxidative · Poa pratensis (Kentucky bluegrass)Positive and negative results
1 in the opposite direction
- negative
fertilization · physiology: oxidative · Poa pratensis (Kentucky bluegrass)Positive and negative results
1 in the opposite direction
- positive
salinity · growth · Poa pratensis (Kentucky bluegrass)Positive and negative results
7 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
6 papers more in this group
See all 10 papers →salinity · physiology: pigments · Poa pratensis (Kentucky bluegrass)Results agree
1 paper in the same direction as this paper
- negative
salinity · physiology: oxidative · Poa pratensis (Kentucky bluegrass)Results agree
2 papers in the same direction as this paper
- negative
- negative
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.