Claim · model-written summary
In tall fescue, only 9% of osmotic adjustment could be attributed to sucrose accumulation.
- Taxon
- tall fescue
Lolium arundinaceume0 - Compound
- sucrosee0
- Outcome
- OAe0
- Value
- 9%e0
Not reportedMaterialGeneOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In tall fescue, only 9% of OA could be attributed to accumulation of sucrose, with fructose and glucose unresponsive to water stress”
Title
Physiological responses of sorghum and six forage grasses to water deficits
David Barker Lincoln (University of Nebraska) 1990
Other claims from this paper (16)
- Observation Osmotic adjustment occurred in all five forage grasses measured in study one.
- Observation Osmotic adjustment was greater in C4 than in C3 forage grasses.
- Observation C3 grasses appear stress resistant because they had more elastic cell walls (low modulus of cell wall elasticity).
- Observation In study two, tall fescue had lower leaf water potential than sorghum.
- Observation In study two, tall fescue had lower full turgor osmotic potential than sorghum.
- Observation In study two, tall fescue had greater osmotic adjustment than sorghum.
- Observation Fructose, glucose and sucrose were significant contributors to leaf osmotic potential at approximately equal levels (26%) in sorghum and tall fescue.
- Observation In sorghum, 30.9% (and in some cases more) of observed osmotic adjustment could be attributed to sugar accumulation.
- Intervention effect In tall fescue, fructose and glucose were unresponsive to water stress.
- Observation Osmotic adjustment was observed for all six sorghum lines in study three.
- Observation Osmotic adjustment was greatest for the sorghum lines Redlan and DK46.
- Observation In the greenhouse, increases in fructose, glucose and sucrose accounted for an average 30.5% of measured osmotic adjustment in the sorghum lines.
- Observation Sorghum lines varied in their pattern of sugar accumulation: 4104 and DK46 as fructose and glucose accumulators, Redlan, 121-18-2 and RS610 as sucrose accumulators, and N94B accumulating all three sugars.
- Observation The contribution of sugars to osmotic adjustment was least for sorghum line DK46.
- Intervention effect Large increases in leaf proline with water stress occurred in the greenhouse but rarely in the field, in all three studies.
- Observation Even dramatic increases in proline content were insufficient to influence osmotic potential.