Journal ArticleDOI
The active transport of ions in plant cells.
TLDR
The present review indicates the existence of similar ion transports in higher plant cells, but it does not present a complete review of the experimental work on higher plants, and tries to assess progress towards understanding the mechanisms involved.Abstract:
In a recent review of the transport of salts and water across multicellular secretory tissues in animals (Keynes, 1969), a summary was given of the various types of active transport of ions necessary to explain the experimental observations in a very wide range of tissues, and five basic types of ion pump were discussed The question of whether plants and animals have any common mechanisms for the transport of salts and water was specifically excluded The original aim of the present review was to survey the types of ion pump found in plant cells and tissues, and to compare these with those found in animals Its aims narrowed very considerably in writing It now reviews ion transport processes in giant algal cells, and tries to assess progress towards understanding the mechanisms involved It indicates the existence of similar ion transports in higher plant cells, but it does not present a complete review of the experimental work on higher plantsread more
Citations
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Book ChapterDOI
The effects of anions on PPi-dependent proton transport in tonoplast vesicles from oat roots.
Andrew J. Pope,Roger A. Leigh +1 more
TL;DR: It is thought that anions move trough selective channels in the tonoplast in response to the Air generated by ATPase, causing dissipation of the ΔΨ and thus an increase in ΔpH, as expected from the chemiosmotic hypothesis.
Book ChapterDOI
Basic Biophysics of Transport
TL;DR: In this article, the authors show that the distance, x, diffused, the diffusion coefficient, D, and the time, t, are related by x 2 ~ Dt.
Potassium Chloride in the Motor Tissue of Stylidium
TL;DR: In this paper, it is suggested that the fast movement and the subsequent slow resetting movement are brought about by changes in turgor pressure in the anterior cells, with the principal osmoticum being KCl.
Book ChapterDOI
Transport in Giant Plant Cells Freshwater Cells
TL;DR: There are reasonable indications that the ion transport processes identified in giant algal cells can be observed also in higher plant cells under suitable experimental conditions, and are likely to form a part of the range of normal activities of such cells.
LightSensitivity of22Na, 86Rb, and42KAbsorption by Different Tissues ofBeanLeaves1
TL;DR: Autoradiographs of22Na-loaded bean leafslices showed that most of thetracer was Concentrated invascular tissue, while Rubidium-86 wasuniformly distributed inslices that had beenincubated in light or indarkness.
References
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Journal ArticleDOI
Coupling of Phosphorylation to Electron and Hydrogen Transfer by a Chemi-Osmotic type of Mechanism
TL;DR: Coupling of Phosphorylation to Electron and Hydrogen Transfer by a Chemi-Osmotic type of Mechanism is described.
Journal ArticleDOI
Chemiosmotic coupling in oxidative and photosynthetic phosphorylation
TL;DR: The end result of the coupling between the flows through the o/r and h/d pathways in oxidative phosphorylation in mitochondria is that, for the equivalent of each pair of electrons traversing the respiratory chain, up to 3 anhydro-bond equivalents may normally traverse the h/D pathway from adenosine diphosphate plus inorganic phosphate (ADP +Pi) to water.
Journal ArticleDOI
The Distinction by Means of Tracers Between Active Transport and Diffusion
TL;DR: It is shown that for a free ion diffusing through a membrane the ratio between the flux in one direction and the simultaneous flux in the opposite direction is independent of the structure of the membrane.
Journal ArticleDOI
The concepts of membrane flow and membrane vesiculation as mechanisms for active transport and ion pumping.
TL;DR: The hypothesis that membrane flow may be an important part of a type of active transport mechanism carrying particles, including ions, along, within, into, and out of cells is introduced.
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