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Open AccessArticle

Inter-Taxa Differences in Iodine Uptake by Plants: Implications for Food Quality and Contamination

by Eleni Siasou and Neil Willey *,†
Centre for Research in Bioscience, Faculty of Health and Applied Sciences, University of the West of England, Coldharbour Lane, Frenchay, Bristol BS16 1QY, UK
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editor: Gareth J. Norton
Agronomy 2015, 5(4), 537-554; https://doi.org/10.3390/agronomy5040537
Received: 22 July 2015 / Revised: 12 October 2015 / Accepted: 4 November 2015 / Published: 9 November 2015
(This article belongs to the Special Issue Accumulation and Distribution of Elements in Crop Plants)
Although iodine is not essential for plants, they take it up readily and, in foodchains, are significant sources of iodine for organisms with an essential requirement for it. During several nuclear accidents radioiodine has been an important component of releases of radioactivity and has caused serious contamination of foodchains. Differences in iodine uptake by different plant taxa are, therefore, important to nutritional and radioecological studies. Using techniques we have developed for a range of other elements, we analyzed inter-taxa differences in radioiodine uptake by 103 plant species and between varieties of two species, and analyzed them using a recent, phylogenetically-informed, taxonomy. The results show that there are significant differences in uptake above and below the species level. There are significant differences between Monocots and Eudicots in iodine uptake, and, in particular, hierarchical ANOVA revealed significant differences between Genera within Families. These analyses of the taxonomic origin of differences in plant uptake of iodine can help the prediction of crop contamination with radioiodine and the management of stable iodine in crops for nutritional purposes. View Full-Text
Keywords: iodine; radioiodine; radioecology; angiosperm phylogeny; soil-to-plant transfer; foodchains iodine; radioiodine; radioecology; angiosperm phylogeny; soil-to-plant transfer; foodchains
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Siasou, E.; Willey, N. Inter-Taxa Differences in Iodine Uptake by Plants: Implications for Food Quality and Contamination. Agronomy 2015, 5, 537-554.

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