Journal
WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY
Volume 20, Issue 4, Pages 427-430Publisher
SPRINGER
DOI: 10.1023/B:WIBI.0000033067.64061.f3
Keywords
ectomycorrhizal fungi; heavy metal accumulation; mycorrhization; plant protection; recultivation
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The results of analyses conducted to determine contents of Cd(II) and Pb(II) in mushrooms of mycorrhizal fungi and selected parts of birches growing in an industrial desert surrounding a nonferrous works are presented in this study. The fruiting bodies of fungi accumulated several times higher contents (up to 80 mug g(-1) dry weight) of Cd(II) compared to those found in the soil (20 mug g(-1) dry weight). In contrast, the mushroom contents of Pb(II) were only slightly increased (up to 895 mug g(-1) dry weight) than those present in the soil (500 mug g(-1) dry weight). However, fivefold higher concentrations of the metals were found in the mycorrhizal roots. Comparing the distribution of the metals analysed, the protective role of the ectomycorrhizae in relation to the host tree was indicated. Mycorrhizal fungi persistently fixed heavy metals, forming an efficient biological barrier that reduced movement of the metals in birch tissues.
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