Abstract
Abstract Myo‐inositol (MI) regulates stress adaptation in plants. The objective of this study was to investigate effects of foliar MI application on improving drought tolerance associated with osmotic adjustment (OA), photosynthesis, and antioxidant defense in creeping bentgrass ( Agrostis stolonifera L.). Both MI‐pretreated (1 mM) and untreated plants were subjected to drought stress or well‐watered conditions for 12 d in growth chambers. Results showed that exogenous MI application protected plants from drought damage by improving OA and water use efficiency, and this contributed to better water status in creeping bentgrass. Interestingly, the foliar spray of MI promoted the accumulation of water‐soluble carbohydrates but decreased drought‐induced free proline in leaves. The MI‐pretreated plants exhibited significantly greater chlorophyll (Chl) content, photochemical efficiency (Fv/Fm), performance index on an absorption basis (PIABS), and net photosynthetic rate (Pn) than untreated plants in response to drought stress. Foliar application of MI decreased superoxide anion radical, H 2 O 2 , and malondialdehyde contents and electrolyte leakage but increased superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), and ascorbate peroxidase (APX) activities and gene expression in leaves under drought stress. This study indicates that MI‐induced drought tolerance was involved in the maintenance of better water relation associated with increases in OA and water use efficiency, the decline in Chl loss for photosynthetic maintenance, and improvement in antioxidant enzymes activity and gene expression contributing to less oxidative damage under drought stress. It is worth further investigating stress‐defensive proteins and metabolites induced by MI in turfgrass or other plant species under drought stress or other abiotic stresses.
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Claims 9
Claim · model-written summary
MI improved osmotic adjustment and water use efficiency, contributing to better water status.
- Taxon
- creeping bentgrass
Agrostis stoloniferae0 - Treatment
- exogenous MI applicatione0
- Outcome
- OA and water use efficiencye0
- Direction
- improvinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenous MI application protected plants from drought damage by improving OA and water use efficiency, and this contributed to better water status in creeping bentgrass”
Claim · model-written summary
MI promoted water-soluble carbohydrate accumulation in leaves.
- Taxon
- creeping bentgrassAgrostis stoloniferat0
- Treatment
- foliar spray of MIe0
- Outcome
- accumulation of water‐soluble carbohydratese0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliar spray of MI promoted the accumulation of water‐soluble carbohydrates but decreased drought‐induced free proline in leaves”
t0“Myo‐inositol enhances drought tolerance in creeping bentgrass through alteration of osmotic adjustment, photosynthesis, and antioxidant defense”
Claim · model-written summary
MI reduced drought-induced leaf free proline.
- Taxon
- creeping bentgrassAgrostis stoloniferat0
- Treatment
- foliar spray of MIe0
- Outcome
- drought‐induced free prolinee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliar spray of MI promoted the accumulation of water‐soluble carbohydrates but decreased drought‐induced free proline in leaves”
t0“Myo‐inositol enhances drought tolerance in creeping bentgrass through alteration of osmotic adjustment, photosynthesis, and antioxidant defense”
Claim · model-written summary
MI pretreatment increased chlorophyll content and photochemical efficiency under drought.
- Taxon
- creeping bentgrassAgrostis stoloniferat0
- Treatment
- MI‐pretreatede0
- Outcome
- chlorophyll (Chl) content, photochemical efficiency (Fv/Fm)e0
- Direction
- greatere0
- Comparator
- untreated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MI‐pretreated plants exhibited significantly greater chlorophyll (Chl) content, photochemical efficiency (Fv/Fm), performance index on an absorption basis (PIABS), and net photosynthetic rate (Pn) than untreated plants in response to drought stress”
t0“Myo‐inositol enhances drought tolerance in creeping bentgrass through alteration of osmotic adjustment, photosynthesis, and antioxidant defense”
Claim · model-written summary
MI pretreatment increased performance index and photosynthetic rate under drought.
- Taxon
- creeping bentgrassAgrostis stoloniferat0
- Treatment
- MI‐pretreatede0
- Outcome
- performance index on an absorption basis (PIABS), and net photosynthetic rate (Pn)e0
- Direction
- greatere0
- Comparator
- untreated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MI‐pretreated plants exhibited significantly greater chlorophyll (Chl) content, photochemical efficiency (Fv/Fm), performance index on an absorption basis (PIABS), and net photosynthetic rate (Pn) than untreated plants in response to drought stress”
t0“Myo‐inositol enhances drought tolerance in creeping bentgrass through alteration of osmotic adjustment, photosynthesis, and antioxidant defense”
Claim · model-written summary
MI decreased superoxide anion radical, hydrogen peroxide and malondialdehyde contents under drought.
- Taxon
- creeping bentgrassAgrostis stoloniferat0
- Treatment
- Foliar application of MIe0
- Outcome
- superoxide anion radical, H 2 O 2 , and malondialdehyde contentse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar application of MI decreased superoxide anion radical, H 2 O 2 , and malondialdehyde contents and electrolyte leakage but increased superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), and ascorbate peroxidase (APX) activities and gene expression in leaves under drought stress”
t0“Myo‐inositol enhances drought tolerance in creeping bentgrass through alteration of osmotic adjustment, photosynthesis, and antioxidant defense”
Claim · model-written summary
MI decreased electrolyte leakage under drought.
- Taxon
- creeping bentgrassAgrostis stoloniferat0
- Treatment
- Foliar application of MIe0
- Outcome
- electrolyte leakagee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar application of MI decreased superoxide anion radical, H 2 O 2 , and malondialdehyde contents and electrolyte leakage but increased superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), and ascorbate peroxidase (APX) activities and gene expression in leaves under drought stress”
t0“Myo‐inositol enhances drought tolerance in creeping bentgrass through alteration of osmotic adjustment, photosynthesis, and antioxidant defense”
Claim · model-written summary
MI increased SOD, CAT and POD activities under drought.
- Taxon
- creeping bentgrassAgrostis stoloniferat0
- Treatment
- MIe2
- Outcome
- superoxide dismutase (SOD), catalase (CAT), peroxidase (POD)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), and ascorbate peroxidase (APX) activities and gene expression in leaves under drought stress”
t0“Myo‐inositol enhances drought tolerance in creeping bentgrass through alteration of osmotic adjustment, photosynthesis, and antioxidant defense”
e2“exogenous MI application”
Claim · model-written summary
MI increased APX activity and antioxidant gene expression under drought.
- Taxon
- creeping bentgrassAgrostis stoloniferat0
- Treatment
- MIe2
- Outcome
- ascorbate peroxidase (APX) activities and gene expressione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), and ascorbate peroxidase (APX) activities and gene expression in leaves under drought stress”
t0“Myo‐inositol enhances drought tolerance in creeping bentgrass through alteration of osmotic adjustment, photosynthesis, and antioxidant defense”
e2“exogenous MI application”
The same questions in other papers
application · quality: sugar starch · Agrostis stolonifera (creeping bent grass)Results agree
1 paper in the same direction as this paper
- positive
application · physiology: oxidative · Agrostis stolonifera (creeping bent 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.