Plant and Soil

, Volume 145, Issue 2, pp 237–243

The effects of cadmium and the cadmium-zinc interaction on the axenic growth of ectomycorrhizal fungi

  • Jan V. Colpaert
  • Jozef A. Van Assche
Article

DOI: 10.1007/BF00010352

Cite this article as:
Colpaert, J.V. & Van Assche, J.A. Plant Soil (1992) 145: 237. doi:10.1007/BF00010352

Abstract

Eleven strains of ectomycorrhizal fungi belonging to seven species have been cultured on a cadmium-contaminated growth medium in order to determine their in vitro cadmium tolerance. Four strains were collected from a zinc and cadmium-polluted soil. Radial growth rate was a sensitive parameter to detect Cd toxicity. A wide differential response to Cd was obtained between the individual species. A clear relation between Cd tolerance and site origin of the isolates did not exist, although such a relationship was found when strains are compared within one species. Cd-sensitive and Cd-tolerant strains of Suillus bovinus were studied in more detail. Two isolates were grown on media with combinations of two non-toxic zinc concentrations and three cadmium levels. Adding a higher Zn concentration to the medium resulted in a reduction of the toxic effect of Cd. This antagonistic effect also resulted in a lowered Cd concentration in the mycelium.

Key words

cadmium tolerance cadmium toxicity ectomycorrhizal fungi zinc 

Copyright information

© Kluwer Academic Publishers 1992

Authors and Affiliations

  • Jan V. Colpaert
    • 1
  • Jozef A. Van Assche
    • 1
  1. 1.Laboratory of Plant EcologyKatholieke Universiteit LeuvenLeuvenBelgium

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