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A phylogenetic effect on strontium concentrations in angiosperms

Willey, Neil; Fawcett, Kathy

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Authors

Neil Willey Neil.Willey@uwe.ac.uk
Professor in Env Plant Physiology

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Kathy Fawcett Kathy.Fawcett@uwe.ac.uk
Senior Lecturer in Science Communication



Abstract

A Residual Maximum Likelihood (REML) procedure was used to compile Sr concentrations in 103 plant species from experiments with Sr concentrations in 66 plant species from the literature. There were 14 species in common between experiments and the literature. The REML procedure loge-transformed data and removed absolute differences in Sr concentrations arising from soil factors and exposure times to estimate mean relative Sr concentrations for 155 species. One hundred and forty-two species formed a group with a normal frequency distribution in mean relative Sr concentration. A nested hierarchical analysis of variance (ANOVA) based on the most recent molecular phylogeny of the angiosperms showed that plant species do not behave independently for Sr concentration but that there is a significant phylogenetic effect on mean relative Sr concentrations. Concentrations of Sr in non-Eudicots were significantly less than in Eudicots and there were significant effects on Sr concentrations in the dataset down the phylogenetic hierarchy to the family level. Of the orders in the dataset the Cucurbitales, Lamiales, Saxifragales and Ranunculales had particularly high Sr concentrations and the Liliales, Poales, Myrtales and Fabales particularly low Sr concentrations. Mean relative Sr concentrations in 60 plant species correlated with those reported elsewhere for Ca in the same species, and the frequency distribution and some phylogenetic effects on Sr concentration in plants were similar to those reported for Ca. This analysis of mean relative Sr concentrations in 155 plant species across the angiosperm phylogeny might be helpful for modelling 90Sr in food chains, predicting radiological doses to flora, and selecting species for phytomonitoring and phytoremediation of 90Sr. © 2005.

Citation

Willey, N., & Fawcett, K. (2006). A phylogenetic effect on strontium concentrations in angiosperms. Environmental and Experimental Botany, 57(3), 258-269. https://doi.org/10.1016/j.envexpbot.2005.06.005

Journal Article Type Article
Publication Date Oct 1, 2006
Deposit Date Apr 4, 2013
Publicly Available Date Feb 20, 2016
Journal Environmental and Experimental Botany
Print ISSN 0098-8472
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 57
Issue 3
Pages 258-269
DOI https://doi.org/10.1016/j.envexpbot.2005.06.005
Keywords strontium, phylogeny, radioecology, calcium, phytoremediation
Public URL https://uwe-repository.worktribe.com/output/1049124

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