Abstract
Abstract Creeping bentgrass ( Agrostis stolonifera ) is sensitive to supra‐optimal temperature, which makes summer bentgrass decline (SBD) a main conundrum troubling turf manager. Diethyl aminoethyl hexanoate (DA‐6) is an artificial and bioactive plant growth regulator affecting tolerance to various abiotic stresses. It is commercially available for field application due to multiple advantages such as low cost, environmentally friendly compound, and sustainable effect. However, the positive effect and mechanism of DA‐6‐mediated heat tolerance in cool‐season grass species and SBD are not yet been explored. Objectives of the study were to screen the optimal dose of DA‐6 for improvement in thermotolerance and to investigate roles of DA‐6 in regulating photosynthesis, osmotic balance, and antioxidant homeostasis in two creeping bentgrass cultivars (heat‐tolerant 13 M and heat‐sensitive Seaside II) in controlled heat condition. Summer heat tolerance induced by the DA‐6 was further evaluated for 2 years under field conditions in a subtropical zone. Results demonstrated that the optimal dose of DA‐6 was screened as 0.1 mM based on analyses of chlorophyll content, photochemical efficiency, and cell membrane stability under heat stress. Foliar application of DA‐6 significantly alleviated heat‐induced leaf senescence by improving photosynthetic performance, accumulation of sugars (sucrose, fructose, and glucose) for osmotic homeostasis, and total antioxidant capacity for reactive oxygen species scavenging in the two cultivars. A 2‐year field test was further carried out to demonstrate that turf quality of the two cultivars was significantly improved after being treated by foliar DA‐6 during hot summer months in 2020 and 2021. Current findings suggested that DA‐6‐mediated thermo‐resistant mechanism was associated with photosynthesis, osmotic adjustment, and antioxidant in cool‐season grass species. Foliar application of DA‐6 could be a cheap, effective, and environmentally friendly strategy to alleviate SBD.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 6
Claim · model-written summary
The optimal DA-6 dose for heat tolerance of creeping bentgrass was 0.1 mM.
- Taxon
- creeping bentgrass
Agrostis stoloniferat0 - Treatment
- DA‐6e1
- Outcome
- optimal dosee1
- Value
- 0.1 mMe1
- Qualifier
- under heat stresse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“heat damage to creeping bentgrass”
e1“the optimal dose of DA‐6 was screened as 0.1 mM based on analyses of chlorophyll content, photochemical efficiency, and cell membrane stability under heat stress”
Claim · model-written summary
Foliar DA-6 significantly alleviated heat-induced leaf senescence in creeping bentgrass.
- Taxon
- creeping bentgrassAgrostis stoloniferat0
- Treatment
- Foliar application of DA‐6e2
- Outcome
- leaf senescencee2
- Direction
- alleviatede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“heat damage to creeping bentgrass”
e2“Foliar application of DA‐6 significantly alleviated heat‐induced leaf senescence by improving photosynthetic performance”
Claim · model-written summary
Foliar DA-6 improved photosynthetic performance of creeping bentgrass under heat.
- Taxon
- creeping bentgrassAgrostis stoloniferat0
- Treatment
- Foliar application of DA‐6e2
- Outcome
- photosynthetic performancee2
- Direction
- improvinge2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“heat damage to creeping bentgrass”
e2“Foliar application of DA‐6 significantly alleviated heat‐induced leaf senescence by improving photosynthetic performance”
Claim · model-written summary
Foliar DA-6 increased sugar accumulation for osmotic homeostasis in creeping bentgrass under heat.
- Taxon
- creeping bentgrassAgrostis stoloniferat0
- Treatment
- Foliar application of DA‐6e2
- Outcome
- accumulation of sugarse3
- Direction
- increaseinferrede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“heat damage to creeping bentgrass”
e2“Foliar application of DA‐6 significantly alleviated heat‐induced leaf senescence by improving photosynthetic performance”
e3“accumulation of sugars (sucrose, fructose, and glucose) for osmotic homeostasis”
Claim · model-written summary
Foliar DA-6 increased total antioxidant capacity for reactive oxygen species scavenging in both creeping bentgrass cultivars under heat.
- Taxon
- creeping bentgrassAgrostis stoloniferat0
- Treatment
- Foliar application of DA‐6e2
- Outcome
- total antioxidant capacitye4
- Direction
- increaseinferrede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“heat damage to creeping bentgrass”
e2“Foliar application of DA‐6 significantly alleviated heat‐induced leaf senescence by improving photosynthetic performance”
e4“total antioxidant capacity for reactive oxygen species scavenging in the two cultivars”
Claim · model-written summary
Foliar DA-6 significantly improved turf quality of both creeping bentgrass cultivars in hot summer months of 2020 and 2021 in field conditions.
- Taxon
- creeping bentgrassAgrostis stoloniferat0
- Treatment
- foliar DA‐6e5
- Outcome
- turf qualitye5
- Direction
- improvede5
- Qualifier
- in 2020 and 2021e5
- Setting
- field conditions in a subtropical zonee6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“heat damage to creeping bentgrass”
e5“turf quality of the two cultivars was significantly improved after being treated by foliar DA‐6 during hot summer months in 2020 and 2021”
e6“under field conditions in a subtropical zone”
The same questions in other papers
application · molecular: metabolites · Agrostis stolonifera (creeping bent grass)Results agree
1 paper in the same direction as this paper
- positive
application · quality: postharvest · Agrostis stolonifera (creeping bent grass)Results agree
2 papers in the same direction as this paper
- positive
- positive
application · quality: general · 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 →application · physiology: photosynthesis · 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.