Marine Biology

, Volume 54, Issue 3, pp 195–199

Mechanisms of copper tolerance in the marine fouling alga Ectocarpus siliculosus — Evidence for an exclusion mechanism

  • A. Hall
  • A. H. Fielding
  • M. Butler
Article

DOI: 10.1007/BF00395780

Cite this article as:
Hall, A., Fielding, A.H. & Butler, M. Mar. Biol. (1979) 54: 195. doi:10.1007/BF00395780

Abstract

Copper-tolerant strains of the marine fouling alga Ectocarpus siliculosus (Dillw) Lyngb. have been recorded. The mechanisms of tolerance which may operate in a copper-tolerant strain were investigated by comparing the growth characteristics, copper content and extracellular organic production of tolerant and non-tolerant strains. Growth was measured by a wet-weight method. The copper content of dryashed cells was measured spectrophotometrically using tetraethylthiuram disulphide. The extracellular material is ultra-violet absorbing, and the production was measured by recording absorption at 265 nm. Evidence suggests that an exclusion mechanism is operating in the tolerant strain under investigation. The extracellular material, the cell wall or an associated organism make little or no contribution no this exclusion. Membrane and intracellular changes are believed to account for the tolerance in this strain of E. siliculosus.

Copyright information

© Springer-Verlag 1979

Authors and Affiliations

  • A. Hall
    • 1
  • A. H. Fielding
    • 1
  • M. Butler
    • 1
  1. 1.Manchester PolytechnicDepartment of Biological SciencesManchesterEngland
  2. 2.Department of BotanyUniversity of SheffieldSheffieldEngland

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