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Toxic interactions of metal ions (Cd 2+ , Pb 2+ , Zn 2+ and Sb 3− ) on in vitro biomass production of ectomycorrhizal fungi
Author(s) -
HARTLEY JEANETTE,
CAIRNEY JOHN W. G.,
SANDERS FRANCIS E.,
MEHARG ANDREW A.
Publication year - 1997
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1046/j.1469-8137.1997.00835.x
Subject(s) - zinc , metal , cadmium , chemistry , biomass (ecology) , toxicity , heavy metals , nuclear chemistry , environmental chemistry , biology , ecology , organic chemistry
summary A number of ectomycorrhizal (ECM) fungi, from sites uncontaminated by toxic metals, were investigated to determine their sensitivity to Cd 2+ , Pb +2 , Zn 2+ and Sb 3− , 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 Cd 2+ and Zn 2+ was recorded, while Pb 2+ and Sb 3− individually had little effect. The presence of Pb 2+ and Sb 3− in the media did however, amcliorate Cd 2+ and Zn 2+ toxicity in some circumstances. Interactions between Cd +2 and Zn +2 were investigated further over a range of concentrations. Zn 2+ was found to significantly ameliorate the toxicity of Cd 2+ to three of the four isolates tested. The influence of Zn 2+ varied between ECM species and with the concentrations of metals tested.