Effect of α‐tocopherol on growth, membrane‐bound adenosine triphosphatase activity of the roots, membrane fluidity and potassium uptake in rice plants

Otto G. Tànczos, L. Erdei, L. Vígh, Baukje Kuipers, Pieter J C Kuiper

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6 Citations (Scopus)

Abstract

The effect of application of α‐tocopherol on the physiology of young rice seedlings (Oryza sativa L. cv. Dunghan Shali) was studied. Application of α‐tocopherol resulted in a growth stimulation of the shoots of 17.5% at the suboptimal 13°/8°C day/night temperature. Growth stimulation was accompanied by stimulation of K+‐uptake of the roots and by stimulation of the Ca2+‐stimulated ATPase activity of the microsomal fraction of the root cell membranes at low temperature in such a way that the non‐linearity (‘broken curve’) of the Arrhenius plot of control plants of this chilling‐sensitive species was absent and replaced by a linear relation, as in chillingresistant species. Application of α‐tocopherol also resulted in increased membrane fluidity, and the data are explained as a structural disordering effect of α‐tocopherol on the cell membranes of the rice seedlings.

Original languageEnglish
Pages (from-to)289-295
Number of pages7
JournalPhysiologia Plantarum
Volume55
Issue number3
DOIs
Publication statusPublished - 1982

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Keywords

  • ATPase
  • ESR
  • K uptake
  • low temperature

ASJC Scopus subject areas

  • Physiology
  • Genetics
  • Plant Science
  • Cell Biology

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