Localization of Zinc and Cadmium in Thlaspi caerulescens (Brassicaceae), a Metallophyte that can Hyperaccumulate both Metals

M. D. Vázquez, J. Barceló, Ch Poschenrieder, J. Mádico, P. Hatton, A. J.M. Baker, G. H. Cope

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179 Citations (Scopus)

Abstract

The compartmentation of Zn and Cd in roots of Thlaspi caerulescens J. & C. Presl, a metallophyte that hyperaccumulates both metals, was investigated by means of EDAX. Two methods for sample preparation, Na2S-fixation and freeze-substitution, were compared. Na2S-fixation was not suitable for preventing the loss of metal ions from the samples. According to our results from freeze-substituted samples, Cd accumulated mainly in the apoplast and, to a lesser extent, in vacuoles, whereas Zn was principally found in vacuoles and, to a lesser extent, in cell walls. © 1992, Gustav Fischer Verlag, Stuttgart. All rights reserved.
Original languageEnglish
Pages (from-to)350-355
JournalJournal of Plant Physiology
Volume140
Issue number3
DOIs
Publication statusPublished - 1 Jan 1992

Keywords

  • cadmium
  • chemical fixation
  • freeze-substitution
  • metal hyperaccumulator
  • Thlaspi caerulescens
  • X-ray microanalysis
  • zinc

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