Dual Mechanisms of Ion Uptake in Relation to Vacuolation in Corn Roots
Open Access
- 1 May 1966
- journal article
- research article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 41 (5) , 863-870
- https://doi.org/10.1104/pp.41.5.863
Abstract
Absorption isotherms for chloride and rubidium ions have been determined through a wide concentration range for nonvacuolate root tips, and for vacuolate subapical sections of corn root. In the range 0 to 0.5 mm, chloride absorption is hyperbolic with concentration in both tips and proximal sections. At high concentrations, 1 to 50 mm, a second multiple-hyperbolic isotherm for chloride is noted in vacuolate tissue, while the isotherm for nonvacuolate tips rises exponentially. A linear to exponentially rising isotherm is taken to signify diffusive permeation.This publication has 12 references indexed in Scilit:
- CARRIER-MEDIATED CATION TRANSPORT IN BARLEY ROOTS: KINETIC EVIDENCE FOR A SPECTRUM OF ACTIVE SITESProceedings of the National Academy of Sciences, 1965
- Effects of Ca Upon Metabolic and Nonmetabolic Uptake of Na and Rb by Root Segments of Zea maysPlant Physiology, 1965
- Ferricyanide-Mediated Transport of Chloride by Anaerobic Corn RootsPlant Physiology, 1964
- Ion transport kinetics in plant tissue: Complexity of the chloride absorption isothermBiochemical and Biophysical Research Communications, 1964
- RESOLUTION OF DUAL MECHANISMS OF POTASSIUM ABSORPTION BY BARLEY ROOTSProceedings of the National Academy of Sciences, 1963
- The essential role of calcium in selective cation transport by plant cellsPlant Physiology, 1961
- Metabolic and Non-Metabolic Uptake of Sodium in Roots of Zea MaysPlant Physiology, 1960
- Multiple Site Uptake of Individual Cations by Roots as Affected by Hydrogen Ion.Plant Physiology, 1958
- The Kinetics of Potassium Accumulation by Corn Roots as a Function of Cell Maturity.Plant Physiology, 1957
- A KINETIC STUDY OF THE ABSORPTION OF ALKALI CATIONS BY BARLEY ROOTSPlant Physiology, 1952