Uptake and toxicity of nano-ZnO in the plant-feeding nematode, Xiphinema vuittenezi: the role of dissolved zinc and nanoparticle-specific effects

Zoltán Sávoly, Krisztina Hrács, Bernhard Pemmer, Christina Streli, Gyula Záray, Péter István Nagy

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Nanoparticulate ZnO is one of the most commonly applied nanomaterials. As ZnO is more soluble than many other oxide nanoparticles, its toxicity beyond the nanoparticle-specific effects can be attributed to the dissolved ionic zinc. The investigation of uptake and toxicity of nano-ZnO in the plant-feeding nematode, Xiphinema vuittenezi, which was used in previous studies as a biological model organism, was aimed. The establishment of the role of dissolved zinc and nanoparticle-specific effects in the toxicity was also the objective of our study. Zn uptake was found to be significantly higher for bulk and nano-ZnO than for ZnSO4 solution; however, treatments caused loss of potassium in the worms in a dissolved-zinc-dependent manner. The toxicity was the lowest for bulk ZnO, and it was very similar for nano-ZnO and ZnSO4 solution. Accordingly, the toxicity of ZnO nanoparticles is a combination of dissolved-zinc-caused toxicity and nanoparticle-specific effects.

Original languageEnglish
Pages (from-to)9669-9678
Number of pages10
JournalEnvironmental Science and Pollution Research
Volume23
Issue number10
DOIs
Publication statusPublished - May 1 2016

Keywords

  • Dissolved zinc
  • Nano-ZnO
  • Nanoparticles
  • Nematode
  • Soil pollution
  • Total reflection X-ray fluorescence
  • Toxicity

ASJC Scopus subject areas

  • Environmental Chemistry
  • Pollution
  • Health, Toxicology and Mutagenesis

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