Bioavailability of nanoparticulate hematite to Arabidopsis thaliana

Yevgeniy Marusenko, Jessie Shipp, George A. Hamilton, Jennifer L L Morgan, Michael Keebaugh, Hansina Hill, Arnab Dutta, Xiaoding Zhuo, Nabin Upadhyay, James Hutchings, Pierre Herckes, Ariel Anbar, Everett Shock, Hilairy Hartnett

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

The environmental effects and bioavailability of nanoparticulate iron (Fe) to plants are currently unknown. Here, plant bioavailability of synthesized hematite Fe nanoparticles was evaluated using Arabidopsis thaliana (A. thaliana) as a model. Over 56-days of growing wild-type A. thaliana, the nanoparticle-Fe and no-Fe treatments had lower plant biomass, lower chlorophyll concentrations, and lower internal Fe concentrations than the Fe-treatment. Results for the no-Fe and nanoparticle-Fe treatments were consistently similar throughout the experiment. These results suggest that nanoparticles (mean diameter 40.9 nm, range 22.3-67.0 nm) were not taken up and therefore not bioavailable to A. thaliana. Over 14-days growing wild-type and transgenic (Type I/II proton pump overexpression) A. thaliana, the Type I plant grew more than the wild-type in the nanoparticle-Fe treatment, suggesting Type I plants cope better with Fe limitation; however, the nanoparticle-Fe and no-Fe treatments had similar growth for all plant types.

Original languageEnglish (US)
Pages (from-to)150-156
Number of pages7
JournalEnvironmental Pollution
Volume174
DOIs
StatePublished - Jan 7 2013

Keywords

  • Arabidopsis thaliana
  • Bioavailability
  • Iron limitation
  • Nanomaterials
  • Nanoparticles

ASJC Scopus subject areas

  • Toxicology
  • Pollution
  • Health, Toxicology and Mutagenesis

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