Similar research was undertaken on the toxicology of nanoparticles on Arabidopsis thaliana, with the results showing that nano-ZnO at 400 mgL-1 could inhibit
germination [16]. Evidences that ENPs penetrate into plant cell were also reported, with or without showing
adverse effects [17-19].
Overall, the current phytotoxicity profile of nanoparticles is highly speculative and preliminary, the
effects of their unique characteristics are poorly understood and more studies on toxicity are required
especially on commercial food crop.