Abstract
A number of ectomycorrhizal (ECM) fungi, from sites uncontaminated by toxic metals, were investigated to determine their sensitivity to Cd2+, Pb2+, Zn2+ and Sb3-, measured as an inhibition of fungal biomass production. Isolates were grown in liquid media amended with the metals, individually (over a range of concentrations) and in combination (at single concentrations) to determine any significant interactions between the metals. Significant interspecific variation in sensitivity to Cd2+ and Zn2+ was recorded, while Pb2+ and Sb3- individually had little effect. The presence of Pb2+ and Sb3- in the media did however, ameliorate Cd2+ and Zn2+ toxicity in some circumstances. Interactions between Cd2+ and Zn2+ were investigated further over a range of concentrations. Zn2+ was found to significantly ameliorate the toxicity of Cd2+ to three of the four isolates tested. The influence of Zn2+ varied between ECM species and with the concentrations of metals tested.
Original language | English |
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Pages (from-to) | 551-562 |
Number of pages | 12 |
Journal | New Phytologist |
Volume | 137 |
Issue number | 3 |
Publication status | Published - Nov 1997 |
Keywords
- ectomycorrhizal fungi
- toxic metals
- interactions
- metal tolerance
- HOLCUS-LANATUS L
- PISOLITHUS-TINCTORIUS
- AXENIC GROWTH
- CADMIUM
- ZINC
- COPPER
- TOLERANCE
- SYSTEM
- NICKEL