Journal
SOIL BIOLOGY & BIOCHEMISTRY
Volume 42, Issue 1, Pages 83-91Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.soilbio.2009.10.003
Keywords
Fungi; Ectomycorrhiza; Bioaccumulation; Gold; Mobility; EDTA extraction
Categories
Funding
- Grant Agency of the Charles University, Prague [IAA600480801]
- The Grant Agency of the Academy of Sciences of the Czech Republic [AVOZ30130516, IRP AV0Z10480505, IRP AV0Z50200510]
- [GAUK 247/2606/B-GEO/Prf]
- [MSM 0021620855]
- [MSM 6046070901]
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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 mu g kg(-1) Au (dry weight) in 79 samples. Saprobic fungi (75 samples) from the same locations yielded significantly higher concentrations: 3-7739 mu g 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. (C) 2009 Elsevier Ltd. All rights reserved.
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