Abstract
A sand culture experiment was conducted to study the effects of nitric oxide(NO) donor sodium nitroprusside(SNP) on the growth,leaf active oxygen metabolism,and leaf osmotica accumulation of ryegrass(Lolium perenne L.) seedlings under NaHCO3 stress.Under the stress of 100 mmol NaHCO3·L-1,applying 60 μmol·L-1 of SNP could alleviate the seedling's growth inhibition,increase the leaf O2-· generation rate and H2O2 and malondialdehyde contents,promote the leaf superoxide dismutase,guaiacol peroxidase,ascorbate peroxidase,and plasma membrane H+-ATPase activities,increase the leaf glutathione,soluble sugar,soluble protein,and proline contents and K+/Na+ ratio,and decrease the leaf catalase activity and ascorbic acid content.Little effects were observed on the leaf free amino content.These results suggested that SNP could alleviate the damage of alkali stress on Lolium perenne seedling leaves via activating the antioxidant system activity,promoting the osmotica accumulation,and improving the Na+ and K+ balance,and accordingly,promote the alkali resistance of the ryegrass plant.
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Claims 8
Claim · model-written summary
SNP alleviated seedling growth inhibition under NaHCO3 stress.
- Taxon
- Lolium perenne L.
Lolium perennee1 - Treatment
- 60 μmol·L-1 of SNPe0
- Outcome
- seedling's growth inhibitione0
- Direction
- alleviatee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under the stress of 100 mmol NaHCO3·L-1,applying 60 μmol·L-1 of SNP could alleviate the seedling's growth inhibition”
e1“ryegrass(Lolium perenne L.) seedlings”
Claim · model-written summary
SNP increased leaf reactive oxygen generation and oxidative damage markers.
- Taxon
- Lolium perenne L.Lolium perennee1
- Treatment
- 60 μmol·L-1 of SNPe2
- Outcome
- leaf O2-· generation rate and H2O2 and malondialdehyde contentse0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increase the leaf O2-· generation rate and H2O2 and malondialdehyde contents”
e1“ryegrass(Lolium perenne L.) seedlings”
e2“applying 60 μmol·L-1 of SNP”
Claim · model-written summary
SNP promoted three antioxidant enzymes and plasma membrane H+-ATPase activity.
- Taxon
- Lolium perenne L.Lolium perennee1
- Treatment
- 60 μmol·L-1 of SNPe2
- Outcome
- leaf superoxide dismutase,guaiacol peroxidase,ascorbate peroxidasee0
- Direction
- promotee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“promote the leaf superoxide dismutase,guaiacol peroxidase,ascorbate peroxidase,and plasma membrane H+-ATPase activities”
e1“ryegrass(Lolium perenne L.) seedlings”
e2“applying 60 μmol·L-1 of SNP”
Claim · model-written summary
SNP increased glutathione, soluble sugar and soluble protein contents.
- Taxon
- Lolium perenne L.Lolium perennee1
- Treatment
- 60 μmol·L-1 of SNPe2
- Outcome
- leaf glutathione,soluble sugar,soluble proteine0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increase the leaf glutathione,soluble sugar,soluble protein,and proline contents and K+/Na+ ratio”
e1“ryegrass(Lolium perenne L.) seedlings”
e2“applying 60 μmol·L-1 of SNP”
Claim · model-written summary
SNP increased proline content and the K+/Na+ ratio.
- Taxon
- Lolium perenne L.Lolium perennee1
- Treatment
- 60 μmol·L-1 of SNPe2
- Outcome
- proline contents and K+/Na+ ratioe0
- Direction
- increasee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“proline contents and K+/Na+ ratio”
e1“ryegrass(Lolium perenne L.) seedlings”
e2“applying 60 μmol·L-1 of SNP”
e3“increase the leaf glutathione,soluble sugar,soluble protein,and proline contents and K+/Na+ ratio”
Claim · model-written summary
SNP decreased catalase activity and ascorbic acid content.
- Taxon
- Lolium perenne L.Lolium perennee1
- Treatment
- 60 μmol·L-1 of SNPe2
- Outcome
- leaf catalase activity and ascorbic acid contente0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decrease the leaf catalase activity and ascorbic acid content”
e1“ryegrass(Lolium perenne L.) seedlings”
e2“applying 60 μmol·L-1 of SNP”
Claim · model-written summary
SNP had little effect on leaf free amino content.
- Taxon
- Lolium perenne L.Lolium perennee1
- Treatment
- 60 μmol·L-1 of SNPe2
- Outcome
- leaf free amino contente0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Little effects were observed on the leaf free amino content”
e1“ryegrass(Lolium perenne L.) seedlings”
e2“applying 60 μmol·L-1 of SNP”
Claim · model-written summary
The authors attribute reduced alkali damage to antioxidant activation, osmolyte accumulation and ion balance.
- Taxon
- Lolium perenneLolium perennee0
- Treatment
- SNPe0
- Outcome
- damage of alkali stresse0
- Qualifier
- activating the antioxidant system activity,promoting the osmotica accumulation,and improving the Na+ and K+ balancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SNP could alleviate the damage of alkali stress on Lolium perenne seedling leaves via activating the antioxidant system activity,promoting the osmotica accumulation,and improving the Na+ and K+ balance”
The same questions in other papers
sodium nitroprusside · physiology: oxidative · Lolium perenne (perennial ryegrass)Positive and negative results
1 paper in the same direction as this paper · 3 in the opposite direction
- positive
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1 paper more in this group
See all 5 papers →sodium nitroprusside · physiology: osmolytes · Lolium perenne (perennial ryegrass)Results agree
1 paper in the same direction as this paper
- positive
sodium nitroprusside · disease · Lolium perenne (perennial ryegrass)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
sodium nitroprusside · physiology: antioxidant enzymes · Lolium perenne (perennial ryegrass)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.