Claim · model-written summary
Root permeability is sensitive to temperature, oxygen and salinity, suggesting living tissue contributes much of radial flow resistance.
Not reportedTaxonMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValue
Verbatim
e0“It is sensitive to environmental conditions such as temperature, oxygen and salinity; this suggests that a major part of the resistance lies in living material in the ‘radial-flow pathway’”
Title
Water movement through root systems
E. I. Newman Philosophical transactions of the Royal Society of London. Series B, Biological sciences 1976. doi:10.1098/rstb.1976.0025
Other claims from this paper (6)
- Mechanism Root resistance can cause aboveground water deficits even in moist soil.
- Observation Root permeability per surface area varies among species and root parts.
- Observation Calculations based on maize roots predict the symplasm as the most likely radial water pathway.
- Mechanism The free-space/endodermis route is unlikely because cell wall material has low permeability.
- Observation Experimental evidence also favors the symplasm pathway.
- Observation Xylem longitudinal flow usually offers much less resistance than radial flow.