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

作者：Savoly Zoltan; Hracs Krisztina; Pemmer Bernhard; Streli Christina; Zaray Gyula; Nagy Peter Istvan

来源：Environmental Science and Pollution Research, 2016, 23(10): 9669-9678.

DOI：10.1007/s11356-015-5983-4

• Nanoparticles
• Nano-ZnO
• Nematode
• Toxicity
• Total reflection X-rayfluorescence
• Dissolvedzinc
• Soil pollution

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.

• 出版日期2016-5