Počet záznamů: 1  

Uranium uptake by hydroponically cultivated crop plants

  1. 1.
    0370666 - UEB-Q 2012 RIV GB eng J - Článek v odborném periodiku
    Soudek, Petr - Petrová, Šárka - Benešová, Dagmar - Dvořáková, Marcela - Vaněk, Tomáš
    Uranium uptake by hydroponically cultivated crop plants.
    Journal of Environmental Radioactivity. Roč. 102, č. 6 (2011), s. 598-604. ISSN 0265-931X
    Grant CEP: GA MŠk OC09082; GA MŠk 2B06187; GA MŠk 2B08058
    Výzkumný záměr: CEZ:AV0Z50380511
    Klíčová slova: Uranium * Uptake * Sinapis alba
    Kód oboru RIV: DK - Kontaminace a dekontamin. půdy vč. pesticidů
    Impakt faktor: 1.339, rok: 2011

    Twenty different plant species were tested in hydroponic solution supplemented by 0.1 mM or 0.5 mM uranium concentration. The uranium accumulation of these plants varied from 0.16 mg/g DW to 0.011 mg/g DW. The highest uranium uptake was determined for Zea mays and the lowest for Arabidopsis thaliana. The amount of accumulated uranium was strongly influenced by uranium concentration in the cultivation medium. Autoradiography showed that uranium is mainly localized in the root system of the plants tested. Additional experiments demonstrated the possibility of influencing the uranium uptake from the cultivation medium by amendments. Tartaric acid was able to increase uranium uptake by Brassica oleracea and Sinapis alba up to 2.8 times or 1.9 times, respectively. Phosphate deficiency increased uranium uptake up to 4.5 times or 3.9 times, respectively, by Brassica oleracea and S. alba. In the case of deficiency of iron or presence of cadmium ions we did not find any increase in uranium accumulation.
    Trvalý link: http://hdl.handle.net/11104/0204394