Abstract
The effect of antioxidant stimulators on low phenolic and high phenolic single seed originating creeping bentgrass [ Agrostis stolonifera var. palustris (Huds.) Farw.] clonal lines were investigated to understand whether these natural compounds could improve the physiological adjustments of creeping bentgrass under low temperature exposure. A marine peptide hydrolysate, and chitosan oligosaccharide (COS) derived from marine chitin were applied to creeping bentgrass foliage and then subjected to cold temperature (4°C, day/night temperature) for 3 wk. Significant stimulation of total phenolic content (8%‐CB 27 to 75%‐CB 15) and antioxidant enzyme response (16%‐CB 27 to 44% CB 13) was observed in creeping bentgrass clonal lines following application of marine peptide + COS. Superoxide dismutase (SOD) (13–50%), and guaiacol peroxidase (GPX) activity (58–99%) increased significantly after treatments in all creeping bentgrass clonal lines, and stimulation of antioxidant enzyme activity was more profound in low phenolic creeping bentgrass clonal lines. Higher glucose‐6‐phosphate dehydrogenase (G6PDH) and higher proline dehydrogenase (PDH) activity was also observed in these lines following application of marine peptide + COS. Stimulation of pentose phosphate pathway (PPP) and a probable proline oxidation in creeping bentgrass clonal lines after foliar application of marine peptide ± COS suggest a role for the enzymes in the improvement of these lines.
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Claims 7
Claim · model-written summary
Marine peptide plus COS significantly stimulated total phenolic content in creeping bentgrass clonal lines by 8% to 75%.
- Taxon
- creeping bentgrass
Agrostis stoloniferae0 - Treatment
- marine peptide + COSe0
- Outcome
- total phenolic contente0
- Direction
- stimulatione0
- Value
- 8%‐CB 27 to 75%‐CB 15e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant stimulation of total phenolic content (8%‐CB 27 to 75%‐CB 15) and antioxidant enzyme response (16%‐CB 27 to 44% CB 13) was observed in creeping bentgrass clonal lines following application of marine peptide + COS.”
Claim · model-written summary
Marine peptide plus COS significantly stimulated antioxidant enzyme response in creeping bentgrass clonal lines by 16% to 44%.
- Taxon
- creeping bentgrassAgrostis stoloniferae0
- Treatment
- marine peptide + COSe0
- Outcome
- antioxidant enzyme responsee0
- Direction
- stimulatione0
- Value
- 16%‐CB 27 to 44% CB 13e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant stimulation of total phenolic content (8%‐CB 27 to 75%‐CB 15) and antioxidant enzyme response (16%‐CB 27 to 44% CB 13) was observed in creeping bentgrass clonal lines following application of marine peptide + COS.”
Claim · model-written summary
Superoxide dismutase activity increased significantly after treatment in all creeping bentgrass clonal lines.
- Taxon
- creeping bentgrassAgrostis stoloniferae0
- Treatment
- treatmentse0
- Outcome
- Superoxide dismutase (SOD)e0
- Direction
- increasede0
- Value
- 13–50%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Superoxide dismutase (SOD) (13–50%), and guaiacol peroxidase (GPX) activity (58–99%) increased significantly after treatments in all creeping bentgrass clonal lines”
Claim · model-written summary
Guaiacol peroxidase activity increased significantly after treatment in all creeping bentgrass clonal lines.
- Taxon
- creeping bentgrassAgrostis stoloniferae0
- Treatment
- treatmentse0
- Outcome
- guaiacol peroxidase (GPX) activitye0
- Direction
- increasede0
- Value
- 58–99%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Superoxide dismutase (SOD) (13–50%), and guaiacol peroxidase (GPX) activity (58–99%) increased significantly after treatments in all creeping bentgrass clonal lines”
Claim · model-written summary
Antioxidant enzyme activity stimulation was more profound in low phenolic creeping bentgrass clonal lines.
- Taxon
- creeping bentgrassAgrostis stoloniferae0
- Material
- low phenolic creeping bentgrass clonal linese0
- Outcome
- antioxidant enzyme activitye0
- Direction
- more profounde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“stimulation of antioxidant enzyme activity was more profound in low phenolic creeping bentgrass clonal lines”
Claim · model-written summary
Glucose-6-phosphate dehydrogenase and proline dehydrogenase activity were higher in creeping bentgrass lines following marine peptide plus COS application.
- Taxon
- Creeping BentgrassAgrostis stoloniferat0
- Treatment
- marine peptide + COSe0
- Outcome
- glucose‐6‐phosphate dehydrogenase (G6PDH) and higher proline dehydrogenase (PDH) activitye0
- Direction
- Highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher glucose‐6‐phosphate dehydrogenase (G6PDH) and higher proline dehydrogenase (PDH) activity was also observed in these lines following application of marine peptide + COS.”
t0“Creeping Bentgrass”
Claim · model-written summary
The authors infer stimulation of the pentose phosphate pathway and probable proline oxidation after foliar marine peptide with or without COS application.
- Taxon
- creeping bentgrassAgrostis stoloniferae0
- Treatment
- foliar application of marine peptide ± COSe0
- Outcome
- pentose phosphate pathway (PPP) and a probable proline oxidatione0
- Qualifier
- suggest a role for the enzymese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stimulation of pentose phosphate pathway (PPP) and a probable proline oxidation in creeping bentgrass clonal lines after foliar application of marine peptide ± COS suggest a role for the enzymes in the improvement of these lines.”
The same questions in other papers
chitosan · physiology: osmolytes · Agrostis stolonifera (creeping bent grass)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
oligosaccharide · quality: phytochemicals · Agrostis stolonifera (creeping bent grass)Results agree
1 paper in the same direction as this paper
- positive
oligosaccharide · physiology: antioxidant enzymes · Agrostis stolonifera (creeping bent grass)Results agree
1 paper in the same direction as this paper
- positive
oligosaccharide · physiology: osmolytes · Agrostis stolonifera (creeping bent grass)Results agree
1 paper in the same direction as this paper
- positive
chitosan · quality: phytochemicals · Agrostis stolonifera (creeping bent grass)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
chitosan · physiology: antioxidant enzymes · Agrostis stolonifera (creeping bent grass)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 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.