Claim · model-written summary
The lack of a simple relation between xyloglucan molecular mass and elongation rate indicates that wall loosening must also involve other wall factors.
- Taxon
- Pea
Lathyrus oleraceust0 - Outcome
- elongation ratee0
- Qualifier
- loosening must also involve other wall factorse0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pea”
e0“the lack of a simple relation between xyloglucan Mr and elongation rate indicates that loosening must also involve other wall factors”
Title
Lawrence D. Talbott; Peter M. Ray 2016
Other claims from this paper (8)
- Intervention effect IAA caused a two- to threefold decline in the peak molecular mass of xyloglucan relative to minus-auxin controls within 0.5 hour.
- Intervention effect IAA caused an even larger decrease in the peak molecular mass of concurrently biosynthesized xyloglucan, beginning only after 1 hour.
- Intervention effect IAA did not appreciably affect the molecular mass distributions of pectic polyuronides or hemicellulosic arabinose/galactose polysaccharides within 1.5 hours.
- Intervention effect After epicotyl segments were cut, the peak polyuronide molecular mass increased and later decreased.
- Intervention effect Xyloglucan underwent IAA-independent changes in its molecular mass distribution after segments were cut.
- Observation The peak molecular mass of newly deposited xyloglucan increased from about 9 to about 30 kilodaltons within 0.5 hour of deposition.
- Intervention effect A step increase in turgor raised the peak molecular mass of previously deposited xyloglucan about 10-fold within 0.5 hour, but not that of the other major polymers.
- Mechanism The turgor-induced upshift in xyloglucan molecular mass may be a feedback mechanism that decreases wall extensibility when wall extension rate suddenly increases.