A model for cation content of plants based on surface potentials and surface charge densities of plant membranes

A. Bérczi, Ian M. Møller, Zoltán Oláh, Tomas Lundborg, L. Erdei

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The model presented takes into account the interaction between the negatively charged membranes and macromolecules and the cations. A central postulate is that a constant average surface charge density (σ) as well as a constant average surface potential (Ψ) is conserved under different ionic conditions. The model makes it possible to predict the size of σ and Ψ from measurements of Na, K, Mg and Ca content in plant tissues of the same age but grown under two different ionic conditions (e.g. high and low K+). Assumptions were made about the relative amounts of free and bound Ca2+ and σ and Ψ were calculated from values in the literature. In all cases σ (and Ψ) are predicted to be higher for shoot (−29 to −96 mC m−2) than for root membranes (−14 to −27 mC m−2). In most cases the predicted σ falls within the range determined experimentally for biological membranes.

Original languageEnglish
Pages (from-to)529-534
Number of pages6
JournalPhysiologia Plantarum
Volume61
Issue number4
DOIs
Publication statusPublished - 1984

Fingerprint

plant density
Cations
cations
Membranes
plant tissues
calcium
shoots

Keywords

  • Anions
  • Ca
  • cations
  • K
  • Mg
  • Na

ASJC Scopus subject areas

  • Physiology
  • Genetics
  • Plant Science
  • Cell Biology

Cite this

A model for cation content of plants based on surface potentials and surface charge densities of plant membranes. / Bérczi, A.; Møller, Ian M.; Oláh, Zoltán; Lundborg, Tomas; Erdei, L.

In: Physiologia Plantarum, Vol. 61, No. 4, 1984, p. 529-534.

Research output: Contribution to journalArticle

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