Experiments were carried out to determine uptake and distribution of Cs-137, and total isotopes of Cs and K in plants of heather (Calluna vulgaris) growing at two levels of CsCl: 0.03 and 0.3 mM. Levels of Cs and K were determined in soil and in parts of plants: roots, stem, leaves and flowers. Also calculated were: (i) transfer factor of Cs and K from soil to parts of plant and (ii) discrimination of K by Cs during the transport of Cs from roots to aboveground parts of plants, expressed as K/Cs discrimination factor. The results confirmed that heather plants are hyper-accumulators of cesium, because the accumulation of Cs in shoot was much greater than in roots. The K level in heather did not change at Cs concentrations as high as 8-fold Cs level in this plant. Heather plants seem to be relatively resistant to cesium toxicity at 0.3 mM of CsCl; the effect of exposure to CsCl at this concentration was exerted only on roots, without affecting leaves and flowers. These results supply new information on the interactions between Cs and K nutrition in plants; they also point to a possible role of heather in redistribution of the radiocesium pollution in the forest ecosystem
CITATION STYLE
Rose, J. M., Bricker, S. B., Deonarine, S., Ferreira, J. G., Getchis, T., Grant, J., … Yarish, C. (2015). Nutrient Bioextraction. In Encyclopedia of Sustainability Science and Technology (pp. 1–33). Springer New York. https://doi.org/10.1007/978-1-4939-2493-6_944-1
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