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The effects of plant traits and phylogeny on soil-to-plant transfer of 99Tc

McEwen, A.; Tang, S.; Hicks, S.; Willey, Neil


A. McEwen

S. Tang

S. Hicks

Neil Willey
Professor in Env Plant Physiology


Assessments of the behaviour of 99Tc in terrestrial environments necessitate predicting soil-to-plant transfer. An experiment with 116 plant taxa showed that 99Tc transfer to plants was positively related to plant dry weight but negatively related to % dry matter and age at exposure. Activities of 99Tc analysed by hierarchical ANOVA coded with an angiosperm phylogeny revealed significant effects, with 55% of the variance between species explained at the Ordinal level and above. Monocots had significantly lower transfer of 99Tc than Eudicots, within which Caryophyllales > Solanales > Malvales > Brassicales > Asterales > Fabales. There was a significant phylogenetic signal in soil-to-plant transfer of 99Tc. This phylogenetic signal is used to suggest that, for example, a nominal Tc Transfer Factor of 5 could be adjusted to 2.3 for Monocots and 5.3 for Eudicots. © 2010 Elsevier Ltd.


Hicks, S., McEwen, A., Tang, S., Willey, N. J., & Willey, N. (2010). The effects of plant traits and phylogeny on soil-to-plant transfer of 99Tc. Journal of Environmental Radioactivity, 101(9), 757-766.

Journal Article Type Article
Publication Date Sep 1, 2010
Journal Journal of Environmental Radioactivity
Print ISSN 0265-931X
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 101
Issue 9
Pages 757-766
Keywords technetium, phylogeny, soil-to-plant transfer
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