Summary
The species- and metal-specific translocation of cadmium and mercury from the substrate to the fruiting bodies of six higher fungi has been investigated.
Species Specific Translocation. The six species differed greatly in their ability to translocate cadmium and mercury. The highest translocation rates displayed Pleurotus flabellatus: 75.0% of the applied cadmium and 38.5% of the mercury could be recovered from the fruiting bodies. High translocation rates were also found with Pleurotus ostreatus (19.3 and 38.5% for cadmium and mercury, respectively). This compares with only 1.27% of cadmium and 8.42% of mercury in Agaricus bisporus or 3.71% of cadmium and 3.63% of mercury in Pleurotus sajor caju.
For Agaricus bisporus it was shown that there was proportionality of translocation over a 1∶10 concentration range.
Translocation in Consecutive Crops. In four out of six species there was a tendency towards higher heavy metal contents in later crops, when calculated on the basis of μg/g of dry fruiting body.
Metal Specific Translocation. In four out of six species (Agaricus bisporus, Pleurotus ostreatus, Flammulina velutipes and Agrocybe aegerita) more mercury than cadmium was translocated into the fruiting bodies, the Cd/Hg ratios being 6.6, 2.0, 5.6, and 3.2, respectively. In Pleurotus sajor caju the ratio was about 1. Only in Pleurotus flabellatus more cadmium than mercury was found in the fruiting bodies (Cd/Hg ratio 0.65).
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Brunnert, H., Zadražil, F. The translocation of mercury and cadmium into the fruiting bodies of six higher fungi. European J. Appl. Microbiol. Biotechnol. 17, 358–364 (1983). https://doi.org/10.1007/BF00499504
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DOI: https://doi.org/10.1007/BF00499504