Abstract
Pretreatment of excised roots of Hordeum vulgare, Zea mays, and Glycine max with various salt solutions affected their subsequent rate of phosphorus absorption from 2 × 10−5m KH2PO4. The rate of absorption was greatest for roots pretreated with trivalent cations, intermediate with divalent cations and lowest with monovalent cations. It appeared that the pretreatment involved a rapid exchange reaction at the root surface which was reversible. A 1 min pretreatment was effective for more than 20 min. The acceleration of phosphorus uptake by roots produced by polyvalent cations may be due partly or entirely to a greater reduction in the electrical potential at the root surface or within the pores of the negatively charged cell wall by polyvalent cations than by monovalent cations.
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Selected References
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- Biddulph O., Woodbridge C. G. THE UPTAKE OF PHOSPHORUS BY BEAN PLANTS WITH PARTICULAR REFERENCE TO THE EFFECTS OF IRON. Plant Physiol. 1952 Jul;27(3):431–444. doi: 10.1104/pp.27.3.431. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Randall P. J., Vose P. B. Effect of Aluminum on Uptake & Translocation of Phosphorus by Perennial Ryegrass. Plant Physiol. 1963 Jul;38(4):403–409. doi: 10.1104/pp.38.4.403. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Tanada T. Effects of Ultraviolet Radiation and Calcium and Their Interaction on Salt Absorption by Excised Mung Bean Roots. Plant Physiol. 1955 May;30(3):221–225. doi: 10.1104/pp.30.3.221. [DOI] [PMC free article] [PubMed] [Google Scholar]