Abstract
Drought is an important environmental stress that adversely affects plant growth and causes a reduction in growth. Despite the expanded areas of use and the increasing usefulness of the turfgrass, research on the drought stress on turfgrass is still insufficient, and there have only been few studies that investigated the effects of silicon on the drought resistance of turfgrass. This study was performed to determine the effects of silicon on Kentucky bluegrass ( Poa pratensis L.) after the application of drought stress. The daily amount of water or silicon solution was 250 mL per a pot. For 14 d, plants were treated with 0, 0.1, and 1.0 mM silicon solution for silicon treatments and with distilled water for the control. Afterward, the plants were exposed to a 21‐d drought treatment, but the control received water as usual. Compared with the control, application of silicon increased the fresh weight of shoots and roots, as well as water content. The silicon pretreatments before drought significantly decreased chlorophyll contents, electrolyte leakage, and the concentrations of malondialdehyde (MDA) and H 2 O 2 . However, the α,α‐diphenyl‐β‐picrylhydrazyl (DPPH) radical scavenging and glutathione (GSH) activities were significantly increased. Also, the responsive activities of the antioxidant enzymes encompassing superoxide dismutase (SOD), ascorbate peroxidase (APX), catalase, and peroxidase were significantly enhanced. Our results suggest that silicon could help Kentucky bluegrass perform better under drought stress by increasing their antioxidant activities while decreasing lipid peroxidation.
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Claims 7
Claim · model-written summary
Silicon application increased the fresh weight of shoots and roots compared with the control.
- Taxon
- Kentucky bluegrass
.jpg?width=60)
Poa pratensise1 - Treatment
- application of silicone0
- Outcome
- fresh weight of shoots and rootse0
- Direction
- increasede0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Compared with the control, application of silicon increased the fresh weight of shoots and roots, as well as water content”
e1“the effects of silicon on Kentucky bluegrass ( Poa pratensis L.)”
Claim · model-written summary
Silicon application increased water content compared with the control.
- Taxon
- Kentucky bluegrassPoa pratensise1
- Treatment
- application of silicone0
- Outcome
- water contente0
- Direction
- increasede0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with the control, application of silicon increased the fresh weight of shoots and roots, as well as water content”
e1“the effects of silicon on Kentucky bluegrass ( Poa pratensis L.)”
Claim · model-written summary
Silicon pretreatment before drought significantly decreased electrolyte leakage and malondialdehyde and H2O2 concentrations.
- Taxon
- Kentucky bluegrassPoa pratensise1
- Treatment
- silicon pretreatments before droughte2
- Outcome
- electrolyte leakage, and the concentrations of malondialdehyde (MDA) and H 2 O 2e2
- Direction
- decreasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the effects of silicon on Kentucky bluegrass ( Poa pratensis L.)”
e2“The silicon pretreatments before drought significantly decreased chlorophyll contents, electrolyte leakage, and the concentrations of malondialdehyde (MDA) and H 2 O 2”
Claim · model-written summary
Silicon pretreatment before drought significantly decreased chlorophyll contents.
- Taxon
- Kentucky bluegrassPoa pratensise1
- Treatment
- silicon pretreatments before droughte2
- Outcome
- chlorophyll contentse2
- Direction
- decreasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the effects of silicon on Kentucky bluegrass ( Poa pratensis L.)”
e2“The silicon pretreatments before drought significantly decreased chlorophyll contents, electrolyte leakage, and the concentrations of malondialdehyde (MDA) and H 2 O 2”
Claim · model-written summary
Silicon pretreatment before drought significantly increased DPPH radical scavenging and glutathione activities.
- Taxon
- Kentucky bluegrassPoa pratensise1
- Treatment
- silicon pretreatments before droughte2
- Outcome
- radical scavenging and glutathione (GSH) activitiese3
- Direction
- increasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the effects of silicon on Kentucky bluegrass ( Poa pratensis L.)”
e2“The silicon pretreatments before drought significantly decreased chlorophyll contents, electrolyte leakage, and the concentrations of malondialdehyde (MDA) and H 2 O 2”
e3“However, the α,α‐diphenyl‐β‐picrylhydrazyl (DPPH) radical scavenging and glutathione (GSH) activities were significantly increased”
Claim · model-written summary
Silicon pretreatment before drought significantly enhanced superoxide dismutase, ascorbate peroxidase and catalase activities.
- Taxon
- Kentucky bluegrassPoa pratensise1
- Treatment
- silicon pretreatments before droughte2
- Outcome
- superoxide dismutase (SOD), ascorbate peroxidase (APX), catalasee4
- Direction
- enhancede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the effects of silicon on Kentucky bluegrass ( Poa pratensis L.)”
e2“The silicon pretreatments before drought significantly decreased chlorophyll contents, electrolyte leakage, and the concentrations of malondialdehyde (MDA) and H 2 O 2”
e4“the responsive activities of the antioxidant enzymes encompassing superoxide dismutase (SOD), ascorbate peroxidase (APX), catalase, and peroxidase were significantly enhanced”
Claim · model-written summary
Silicon pretreatment before drought significantly enhanced peroxidase activity.
- Taxon
- Kentucky bluegrassPoa pratensise1
- Treatment
- silicon pretreatments before droughte2
- Outcome
- peroxidasee4
- Direction
- enhancede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the effects of silicon on Kentucky bluegrass ( Poa pratensis L.)”
e2“The silicon pretreatments before drought significantly decreased chlorophyll contents, electrolyte leakage, and the concentrations of malondialdehyde (MDA) and H 2 O 2”
e4“the responsive activities of the antioxidant enzymes encompassing superoxide dismutase (SOD), ascorbate peroxidase (APX), catalase, and peroxidase were significantly enhanced”
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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.