Abstract
Soil salinization is an environmental problem globally. Bermudagrass ( Cynodon dactylon ) has long been used for soil restoration in saline-alkali land. Urbanization and the compound planting pattern combining trees, bushes, and grasses induced shading are becoming one of the most significant environmental constraints on the management of bermudagrass, which directly affects photosynthetic characteristics. Salinity and shade have become the most important environmental constraints on lawn development and implementation. Previous studies have shown that the plant physiological response under combined stress was different from that under single stress. The purpose of this research was to investigate the effects of salinity stress, shade stress, and the combined stress on bermudagrass. Shade nets were used to simulate shade stress to 85% shade. The NaCl concentration gradient for salinity stress was 1.0% for 7 days, 1.5% for 7 days, and 2.0% for 13 days, respectively. The combined stress combines the two approaches mentioned previously. The results showed that the salinity stress significantly inhibited the plant height, leaf relative water content, chlorophyll content, the chlorophyll a fluorescence induction (OJIP) curve and other photosynthetic parameters of bermudagrass while increasing electrolyte leakage when compared with control. Shade stress significantly enhanced the plant height, chlorophyll content, electrolyte leakage, the OJIP curve, and other photosynthetic parameters. Under the combined stress, the plant height and relative water content did not change significantly, but the photosynthetic parameters such as chlorophyll content and the OJIP curve increased. Furthermore, under the combined stress, the photosynthesis-related genes were regulated. Salinity stress inhibited the photosynthetic ability of bermudagrass more than shade stress, while the combined stress exhibited a considerably better photosynthetic ability. These findings provide information for the usage of bermudagrass in salinized shade conditions.
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Claims 12
Claim · model-written summary
Salinity significantly inhibited bermudagrass plant height.
- Taxon
- bermudagrass
Cynodon dactylone0 - Treatment
- salinity stresse0
- Outcome
- plant heighte0
- Direction
- inhibitede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that the salinity stress significantly inhibited the plant height, leaf relative water content, chlorophyll content, the chlorophyll a fluorescence induction (OJIP) curve and other photosynthetic parameters of bermudagrass while increasing electrolyte leakage when compared with control.”
Claim · model-written summary
Salinity significantly inhibited bermudagrass leaf relative water content and chlorophyll content.
- Taxon
- bermudagrassCynodon dactylone0
- Treatment
- salinity stresse0
- Outcome
- leaf relative water content, chlorophyll contente0
- Direction
- inhibitede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that the salinity stress significantly inhibited the plant height, leaf relative water content, chlorophyll content, the chlorophyll a fluorescence induction (OJIP) curve and other photosynthetic parameters of bermudagrass while increasing electrolyte leakage when compared with control.”
Claim · model-written summary
Salinity significantly inhibited the OJIP curve and other photosynthetic parameters of bermudagrass.
- Taxon
- bermudagrassCynodon dactylone0
- Treatment
- salinity stresse0
- Outcome
- chlorophyll a fluorescence induction (OJIP) curve and other photosynthetic parameterse0
- Direction
- inhibitede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that the salinity stress significantly inhibited the plant height, leaf relative water content, chlorophyll content, the chlorophyll a fluorescence induction (OJIP) curve and other photosynthetic parameters of bermudagrass while increasing electrolyte leakage when compared with control.”
Claim · model-written summary
Salinity increased bermudagrass electrolyte leakage compared with control.
- Taxon
- bermudagrassCynodon dactylone0
- Treatment
- salinity stresse0
- Outcome
- electrolyte leakagee0
- Direction
- increasinge0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that the salinity stress significantly inhibited the plant height, leaf relative water content, chlorophyll content, the chlorophyll a fluorescence induction (OJIP) curve and other photosynthetic parameters of bermudagrass while increasing electrolyte leakage when compared with control.”
Claim · model-written summary
Shade significantly enhanced bermudagrass plant height and chlorophyll content.
- Taxon
- BermudagrassCynodon dactylont0
- Treatment
- Shade stresse0
- Outcome
- plant height, chlorophyll contente0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shade stress significantly enhanced the plant height, chlorophyll content, electrolyte leakage, the OJIP curve, and other photosynthetic parameters.”
t0“Bermudagrass”
Claim · model-written summary
Shade significantly enhanced bermudagrass electrolyte leakage.
- Taxon
- BermudagrassCynodon dactylont0
- Treatment
- Shade stresse0
- Outcome
- electrolyte leakagee0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shade stress significantly enhanced the plant height, chlorophyll content, electrolyte leakage, the OJIP curve, and other photosynthetic parameters.”
t0“Bermudagrass”
Claim · model-written summary
Shade significantly enhanced the OJIP curve and other photosynthetic parameters of bermudagrass.
- Taxon
- BermudagrassCynodon dactylont0
- Treatment
- Shade stresse0
- Outcome
- OJIP curve, and other photosynthetic parameterse0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shade stress significantly enhanced the plant height, chlorophyll content, electrolyte leakage, the OJIP curve, and other photosynthetic parameters.”
t0“Bermudagrass”
Claim · model-written summary
Combined stress did not significantly change bermudagrass plant height and relative water content.
- Taxon
- BermudagrassCynodon dactylont0
- Treatment
- combined stresse0
- Outcome
- plant height and relative water contente0
- Direction
- did not changee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under the combined stress, the plant height and relative water content did not change significantly, but the photosynthetic parameters such as chlorophyll content and the OJIP curve increased.”
t0“Bermudagrass”
Claim · model-written summary
Combined stress increased bermudagrass chlorophyll content and OJIP curve.
- Taxon
- BermudagrassCynodon dactylont0
- Treatment
- combined stresse0
- Outcome
- chlorophyll content and the OJIP curvee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under the combined stress, the plant height and relative water content did not change significantly, but the photosynthetic parameters such as chlorophyll content and the OJIP curve increased.”
t0“Bermudagrass”
Claim · model-written summary
Combined stress regulated photosynthesis-related genes in bermudagrass.
- Taxon
- BermudagrassCynodon dactylont0
- Treatment
- combined stresse0
- Gene
- photosynthesis-related genese0
- Outcome
- photosynthesis-related genes were regulatede0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Furthermore, under the combined stress, the photosynthesis-related genes were regulated.”
t0“Bermudagrass”
Claim · model-written summary
Salinity inhibited bermudagrass photosynthetic ability more than shade.
- Taxon
- bermudagrassCynodon dactylone0
- Treatment
- Salinity stresse0
- Outcome
- photosynthetic abilitye0
- Direction
- inhibitede0
- Comparator
- shade stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity stress inhibited the photosynthetic ability of bermudagrass more than shade stress, while the combined stress exhibited a considerably better photosynthetic ability.”
Claim · model-written summary
Combined stress yielded considerably better bermudagrass photosynthetic ability.
- Taxon
- bermudagrassCynodon dactylone0
- Treatment
- combined stresse0
- Outcome
- photosynthetic abilitye0
- Direction
- bettere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity stress inhibited the photosynthetic ability of bermudagrass more than shade stress, while the combined stress exhibited a considerably better photosynthetic ability.”
The same questions in other papers
salinity · physiology: photosynthesis · Cynodon dactylon (Bermuda grass)Positive and negative results
1 in the opposite direction
- positive
shade · physiology: photosynthesis · Cynodon dactylon (Bermuda grass)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- positive
salinity · physiology: oxidative · Cynodon dactylon (Bermuda grass)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- negative
salinity · growth · Cynodon dactylon (Bermuda grass)Positive and negative results
7 papers in the same direction as this paper · 6 in the opposite direction
- positive
- positive
- positive
10 papers more in this group
See all 14 papers →salinity · physiology: water · Cynodon dactylon (Bermuda grass)Results agree
2 papers in the same direction as this paper
- negative
- negative
shade · physiology: pigments · Cynodon dactylon (Bermuda grass)Results agree
2 papers in the same direction as this paper
- 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.