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 (Cr2O 2−7 , 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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Acknowledgements
The Hungarian Ministry of Education awarded a Széchenyi István scholarship to I.P. T.E. was a grantee of the Bolyai János Scholarship. MJP and IP thank the ERASMUS EEC programme for promoting exchange between staff members and students between the University of Debrecen and the Université Libre de Bruxelles.
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Hegedűs, N., Emri, T., Szilágyi, J. et al. Effect of heavy metals on the glutathione status in different ectomycorrhizal Paxillus involutus strains. World J Microbiol Biotechnol 23, 1339–1343 (2007). https://doi.org/10.1007/s11274-007-9368-9
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DOI: https://doi.org/10.1007/s11274-007-9368-9