Abstract
Abstract Elevated CO 2 concentration affects plant responses to drought, but its effects on poststress recovery for perennial grass species with different growth habits are unclear. The objective was to determine how stoloniferous and bunch‐type grass species may exhibit differential responses to elevated CO 2 concentration during drought stress and postdrought recovery upon rewatering due to different growth characteristics. Stoloniferous creeping bentgrass ( Agrostis stolonifera L.) ‘Penncross’ and bunch‐type tall fescue [ Schedonorus arundinaceus (Schreb.) Dumort] ‘Sitka’ were grown at ambient CO 2 (400 μl L −1 ) or elevated CO 2 concentration (800 μl L −1 ) repeated in four growth chambers for 28 d, subsequently subjected to either irrigation (control) or drought stress (irrigation completely withheld) for 28 d, and then rewatered for 18 d. During drought stress, both species exposed to elevated CO 2 maintained higher turf quality, leaf water content, and membrane stability than plants at ambient CO 2 . Elevated CO 2 caused significant increases in the viability of stolon–node meristematic tissues in creeping bentgrass under drought stress and rapid regeneration of daughter plants during rewatering, as shown by increased shoot biomass and percent turfgrass cover. Elevated CO 2 had no significant effects on the viability of crowns with meristematic tissues in tall fescue during drought nor shoot biomass or percent turfgrass cover during rewatering. The stoloniferous grass species was more responsive to elevated CO 2 compared to bunch‐type species for poststress recovery, as creeping bentgrass rapidly regrew and recovered from drought damages. Such information is of great importance for making appropriate turfgrass selections and breeding improvements in growth habits in areas with prolonged drought and the anticipated rising CO 2 levels.
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Claims 8
Claim · model-written summary
Elevated CO2 maintained higher turf quality, leaf water content and membrane stability in both grasses under drought.
- Taxon
- creeping bentgrass
Agrostis stoloniferat0 - Treatment
- elevated CO 2e0
- Outcome
- turf quality, leaf water content, and membrane stabilitye0
- Direction
- highere0
- Qualifier
- During drought stresse0
- Comparator
- ambient CO 2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During drought stress, both species exposed to elevated CO 2 maintained higher turf quality, leaf water content, and membrane stability than plants at ambient CO 2 .”
t0“creeping bentgrass ( Agrostis stolonifera L.)”
Claim · model-written summary
Elevated CO2 maintained higher turf quality, leaf water content and membrane stability in tall fescue under drought.
- Taxon
- tall fescue
Lolium arundinaceumt0 - Treatment
- elevated CO 2e0
- Outcome
- turf quality, leaf water content, and membrane stabilitye0
- Direction
- highere0
- Qualifier
- During drought stresse0
- Comparator
- ambient CO 2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During drought stress, both species exposed to elevated CO 2 maintained higher turf quality, leaf water content, and membrane stability than plants at ambient CO 2 .”
t0“tall fescue [ Schedonorus arundinaceus (Schreb.) Dumort]”
Claim · model-written summary
Elevated CO2 significantly increased stolon-node meristem viability in drought-stressed creeping bentgrass.
- Taxon
- creeping bentgrassAgrostis stoloniferae0
- Treatment
- Elevated CO 2e0
- Outcome
- viability of stolon–node meristematic tissuese0
- Direction
- increasese0
- Qualifier
- under drought stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Elevated CO 2 caused significant increases in the viability of stolon–node meristematic tissues in creeping bentgrass under drought stress”
Claim · model-written summary
Elevated CO2 increased shoot biomass during creeping bentgrass rewatering.
- Taxon
- creeping bentgrassAgrostis stoloniferae0
- Treatment
- Elevated CO 2e0
- Outcome
- shoot biomasse0
- Direction
- increasede0
- Qualifier
- during rewateringe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Elevated CO 2 caused significant increases in the viability of stolon–node meristematic tissues in creeping bentgrass under drought stress and rapid regeneration of daughter plants during rewatering, as shown by increased shoot biomass and percent turfgrass cover.”
Claim · model-written summary
Elevated CO2 increased turfgrass cover during creeping bentgrass rewatering.
- Taxon
- creeping bentgrassAgrostis stoloniferae0
- Treatment
- Elevated CO 2e0
- Outcome
- percent turfgrass covere0
- Direction
- increasede0
- Qualifier
- during rewateringe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Elevated CO 2 caused significant increases in the viability of stolon–node meristematic tissues in creeping bentgrass under drought stress and rapid regeneration of daughter plants during rewatering, as shown by increased shoot biomass and percent turfgrass cover.”
Claim · model-written summary
Elevated CO2 had no significant effect on crown meristem viability in drought-stressed tall fescue.
- Taxon
- tall fescueLolium arundinaceume0
- Treatment
- Elevated CO 2e0
- Outcome
- viability of crowns with meristematic tissuese0
- Direction
- no significant effectse0
- Qualifier
- during droughte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Elevated CO 2 had no significant effects on the viability of crowns with meristematic tissues in tall fescue during drought”
Claim · model-written summary
Elevated CO2 had no significant effect on tall fescue shoot biomass during rewatering.
- Taxon
- tall fescueLolium arundinaceume0
- Treatment
- Elevated CO 2e0
- Outcome
- shoot biomasse0
- Direction
- no significant effectse0
- Qualifier
- during rewateringe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Elevated CO 2 had no significant effects on the viability of crowns with meristematic tissues in tall fescue during drought nor shoot biomass or percent turfgrass cover during rewatering.”
Claim · model-written summary
Elevated CO2 had no significant effect on tall fescue cover during rewatering.
- Taxon
- tall fescueLolium arundinaceume0
- Treatment
- Elevated CO 2e0
- Outcome
- percent turfgrass covere0
- Direction
- no significant effectse0
- Qualifier
- during rewateringe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Elevated CO 2 had no significant effects on the viability of crowns with meristematic tissues in tall fescue during drought nor shoot biomass or percent turfgrass cover during rewatering.”
The same questions in other papers
co2 · growth · Lolium arundinaceum (tall fescue)Results differ
2 papers in the same direction as this paper · 6 in the opposite direction
- negative
- positive
- positive
5 papers more in this group
See all 9 papers →co2 · growth · Agrostis stolonifera (creeping bent grass)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- positive
- positive
- negative
co2 · physiology: water · Lolium arundinaceum (tall fescue)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- 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.