Skip to main content
PMC home page
Plant Physiology logoLink to Plant Physiology
. 1969 Aug;44(8):1182–1186. doi: 10.1104/pp.44.8.1182

Magnesium Uptake by Soybeans

J E Leggett a, W A Gilbert a,1
PMCID: PMC396236  PMID: 16657186

Abstract

Magnesium contents of soybean (Glycine max) roots increase and the K and Ca contents decrease with increased MgCl2 concentrations in ambient solutions. The Mg uptake is inhibited when both Ca and K are present in the solution, but not by K or Ca alone. Chloride uptake, which is very low from the MgCl2 solution, is greatly enhanced by the presence of K. The selectivity against Mg imparted by K + Ca appears to be at an external barrier for cation uptake as shown by its dependence on the presence of Ca in the external solution. The Ca content of roots is influenced only slightly by changes in external Ca concentrations from 10−4 to 10−2m, but that of shoots is greatly enhanced as the Ca concentration is increased or the K concentration is decreased. These effects on Ca contents are explained as arising from transport to the shoot without involvement of vacuoles of root cells.

Full text

PDF
1185

Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Barber D. A., Koontz H. V. Uptake of Dinitrophenol & its Effect on Transpiration & Calcium Accumulation in Barley Seedlings. Plant Physiol. 1963 Jan;38(1):60–65. doi: 10.1104/pp.38.1.60. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. Collander R. SELECTIVE ABSORPTION OF CATIONS BY HIGHER PLANTS. Plant Physiol. 1941 Oct;16(4):691–720. doi: 10.1104/pp.16.4.691. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Epstein E. The essential role of calcium in selective cation transport by plant cells. Plant Physiol. 1961 Jul;36(4):437–444. doi: 10.1104/pp.36.4.437. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Jacobson L., Moore D. P., Hannapel R. J. Role of Calcium in Absorption of Monovalent Cations. Plant Physiol. 1960 May;35(3):352–358. doi: 10.1104/pp.35.3.352. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Leggett J. E., Galloway R. A., Gauch H. G. Calcium Activation of Orthophosphate Absorption by Barley Roots. Plant Physiol. 1965 Sep;40(5):897–902. doi: 10.1104/pp.40.5.897. [DOI] [PMC free article] [PubMed] [Google Scholar]
  6. Leggett J. E., Gilbert W. A. Localization of the ca-mediated apparent ion selectivity in the cross sectional volume of soybean roots. Plant Physiol. 1967 Dec;42(12):1658–1664. doi: 10.1104/pp.42.12.1658. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. Moore D. P., Jacobson L., Overstreet R. Uptake of calcium by excised barley roots. Plant Physiol. 1961 Jan;36(1):53–57. doi: 10.1104/pp.36.1.53. [DOI] [PMC free article] [PubMed] [Google Scholar]
  8. Moore D. P., Mason B. J., Maas E. V. Accumulation of Calcium in Exudate of Individual Barley Roots. Plant Physiol. 1965 Jul;40(4):641–644. doi: 10.1104/pp.40.4.641. [DOI] [PMC free article] [PubMed] [Google Scholar]
  9. Moore D. P., Overstreet R., Jacobson L. Uptake of magnesium & its interaction with calcium in excised barley roots. Plant Physiol. 1961 May;36(3):290–295. doi: 10.1104/pp.36.3.290. [DOI] [PMC free article] [PubMed] [Google Scholar]
  10. Viets F. G. CALCIUM AND OTHER POLYVALENT CATIONS AS ACCELERATORS OF ION ACCUMULATION BY EXCISED BARLEY ROOTS. Plant Physiol. 1944 Jul;19(3):466–480. doi: 10.1104/pp.19.3.466. [DOI] [PMC free article] [PubMed] [Google Scholar]

Articles from Plant Physiology are provided here courtesy of Oxford University Press

RESOURCES