Bioaccumulation of gold in macrofungi and ectomycorrhizae from the vicinity of the Mokrsko gold deposit, Czech Republic

0334653 - GLÚ 2010 RIV GB eng J - Journal Article
Borovička, Jan - Dunn, C. E. - Gryndler, Milan - Mihaljevič, M. - Jelínek, E. - Rohovec, Jan - Rohošková, M. - Řanda, Zdeněk
Bioaccumulation of gold in macrofungi and ectomycorrhizae from the vicinity of the Mokrsko gold deposit, Czech Republic.
[Bioakumulace zlata v houbách a ektomykorhizách z oblasti ložiska Mokrsko, Česká republika.]
Soil Biology and Biochemistry. Roč. 42, č. 1 (2010), s. 83-91. ISSN 0038-0717
R&D Projects: GA AV ČR IAA600480801
Institutional research plan: CEZ:AV0Z30130516; CEZ:AV0Z50200510; CEZ:AV0Z10480505
Keywords : bioaccumulation * Ectomycorrhiza * EDTA extraction * Fungi * gold * mobility
Subject RIV: EF - Botanics
Impact factor: 3.242, year: 2010

Samples of macrofungi collected in the vicinity of the Mokrsko gold deposit were analyzed for Au by INAA and ICP-MS. Ectomycorrhizal fungi yielded from 0.88 to 564 μg kg⁻¹ Au (dry weight) in 79 samples. Saprobic fungi (75 samples) from the same locations yielded significantly higher concentrations: 3–7739 μg kg−1 Au (dry weight), with the highest contents in Lycoperdon perlatum. These are the highest recorded concentrations of Au in naturally-occurring fungi/vascular plants. Concentrations of Au in ectomycorrhizae were approximately 4–10 times higher than those in fine roots. It appears that saprobic fungi, namely several terrestrial saprobes of the genera Agaricus and Lycoperdon, are more efficient than ectomycorrhizal fungi at taking up Au, probably assisted by other microbiota and/or by a range of naturally-occurring compounds that have yet to be identified. The present data demonstrate that macrofungi are involved in the biogeochemical cycling of Au.
Permanent Link: http://hdl.handle.net/11104/0179333