Effect of heavy metals on the glutathione status in different ectomycorrhizal Paxillus involutus strains |
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| Authors: | Nikoletta Hegedűs Tamás Emri Judit Szilágyi Zsolt Karányi István Nagy Michel J. Penninckx István Pócsi |
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| Affiliation: | (1) Department of Microbial Biotechnology and Cell Biology, Faculty of Science, University of Debrecen, P.O. Box 63, 4010 Debrecen, Hungary;(2) First Department of Medicine, Faculty of Medicine, University of Debrecen, P.O. Box 19, 4012 Debrecen, Hungary;(3) Department of Inorganic and Analytical Chemistry, Faculty of Science, University of Debrecen, P.O. Box 21, 4010 Debrecen, Hungary;(4) Laboratoire de Physiologie et Ecologie Microbienne, Université Libre de Bruxelles, c/o Institut Pasteur, 642 Rue Engeland, 1180 Brussels, Belgium |
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| Abstract: | The glutathione (GSH) status and heavy metal tolerance were investigated in four Paxillus involutus strains isolated from different heavy-metal-polluted and non-polluted regions of Europe. The heavy metal burden in the habitats did not affect significantly either the heavy metal (Cr2O72−, Cd2+, Hg2+, Pb2+, Zn2+, Cu2+) tolerance and accumulation or the GSH production of the strains tested. Exposures to heavy metals increased the intracellular GSH concentrations in 12 from 24 experimental arrangements (four strains exposed to six heavy metals) independently of the habitats of the strains. The importance of GSH in heavy metal tolerance (high MIC values, ability to accumulate heavy metals and to grow in the presence of heavy metals) was thus demonstrated in this ectomycorrhizal fungus. |
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| Keywords: | Bioremediation Ectomycorrhiza Glutathione Heavy metal Paxillus involutus |
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