These concentrations were comparable with the
concentrations of uranium in hydroponically grown plants, Arabidopsis
halleri, determined by Viehweger and Geipel (2010) (25–300 μg/g
DW in shoots, 0.5–3 mg/g DW in the roots). Exceptionally high
concentrations were found in the roots of plants grown without
phosphate supplementation. Plants were able to accumulate up to 40
times more uranium in the roots, 15 times more in the stems and 2
times more in the leaves compared to plants grown in the presence of
phosphate. This corresponds with the findings of other authors (Ebbs
et al., 1998; Mkandawire et al., 2007).