Algae sequester heavy metals via synthesis of phytochelatin complexes

Walter Gekeler, Erwin Grill, Ernst Ludwig Winnacker, Meinhart H. Zenk

Research output: Contribution to journalArticlepeer-review

317 Scopus citations

Abstract

A Cd-binding complex was isolated from Chlorella fusca and has been shown to be composed of phytochelating peptides, (γ-Glu-Cys)n-Gly, n=2-5. Members of six of the ten classes of Phycophyta revealed phytochelatin synthesis after exposure to cadmium ions. Phytochelatin was also induced by ions of lead, zinc, silver, copper and mercury. These experiments uneqiovocally demonstrated that algae sequester heavy metals by an identical mechanism as higher plants, namely via complexation to phytochelatins.

Original languageEnglish
Pages (from-to)197-202
Number of pages6
JournalArchives of Microbiology
Volume150
Issue number2
DOIs
StatePublished - Jun 1988
Externally publishedYes

Keywords

  • Algae
  • Chlorella fusca
  • Glutathione
  • Heavy metal
  • Inducible Cd-binding complex
  • Metallothionein
  • Phytochelatin
  • Sulfide

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