, Volume 346, Issue 1–3, pp 77–84 | Cite as

Effects of cadmium, copper, and zinc on growth and thiol content of aquatic hyphomycetes

  • Jürgen Miersch
  • Felix Bärlocher
  • Ina Bruns


The effects of cadmium, copper, and zinc on the growth of ten strains ofaquatic hyphomycetes were investigated. On a solid medium, Cd and Cu reducedradial growth of most strains by 50% at concentrations between150–400 µM; in a liquid medium, the strains were more sensitive.The inhibitory effects of zinc were much less severe. Two isolates(Articulospora tetracladia and Tetracladium marchalianum) from a copper-minestream were more resistant against copper than conspecific strains from anon-polluted stream. Heliscus lugdunensis and Varicosporium elodeaeresponded to Cd exposure, but not to Cu or Zn exposure, by increasedsynthesis of SH-containing compounds. Glutathione levels showed a unimodalresponse to increasing Cd and Zn exposure. With copper, glutathionedecreased at intermediate levels of contamination. In the presence of Cd, H. lugdunensis synthesized several unknown sulfur-rich substances that wereabsent or produced at reduced rates in control cultures.

aquatic hyphomycetes heavy metals sulfur-rich compounds metallothioneins 


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Copyright information

© Kluwer Academic Publishers 1997

Authors and Affiliations

  • Jürgen Miersch
    • 1
  • Felix Bärlocher
    • 2
  • Ina Bruns
    • 1
  1. 1.Institute of BiochemistryMartin-Luther-University Halle-WittenbergHalle/S.Germany
  2. 2.Biology DepartmentMount Allison UniversitySackvilleCanada

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