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

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

Abstract

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.

• Journal Article Type: Article
• Publication Date: Sep 1, 2010
• Deposit Date: Nov 1, 2010
• Journal: Journal of Environmental Radioactivity
• Print ISSN: 0265-931X
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 101
• Issue: 9
• Pages: 757-766
• DOI: https://doi.org/10.1016/j.jenvrad.2010.04.019
• Keywords: technetium, phylogeny, soil-to-plant transfer
• Public URL: https://uwe-repository.worktribe.com/output/976028
• Publisher URL: http://dx.doi.org/10.1016/j.jenvrad.2010.04.019
• Contract Date: Nov 15, 2016