Zinc oxide nanoparticles-mediated changes in ultrastructure and macromolecules of pomegranate callus cells

Zinc Oxide Nanoparticles Induce Changes in the Antioxidant Systems and Macromolecules in the Solanum nigrum Callus

“…This change in the intensity of peaks might reveal that ZnO NPs changed the composition of fatty acids. In line with this result, Radi et al (2018) showed that ZnO NPs did not induce a noticeable shift at this peak.…”

“…In this research, the accumulated Zn in the S. nigrum callus by the increase in levels of ZnO NPs was insignificantly correlated with the DW of callus, while it was significantly correlated with LOX activity that could confirm the tolerance of S. nigrum to the toxicity of ZnO NPs. An increase in Zn accumulation was also reported during the stress of ZnO NPs on the pomegranate callus (Radi et al, 2018).…”

“…The obtained data showed that exposure of the callus to ZnO NPs increased the transmittance area and intensity, and this increase could indicate that additional O-H groups were formed to chelate Zn. It was earlier reported that the low concentration (10mg L -1 ) of ZnO NPs led to a positive shift and high intensity of this band in pomegranate calli, whereas the high concentration (150mg L -1 ) caused the opposite effect (Radi et al, 2018).…”

“…The acid digested sample (1:3:1 ratio of 60% HClO 4 , concentrated HNO 3 and H 2 SO 4 ) was analyzed for K using flame photometer Carl Zeiss; for Zn using atomic absorption spectrophotometry (Buck model 210 Vgp, USA) (Radi et al, 2018), while P was determined using the technique of Woods & Mellon (1941).…”

“…In contrast, growth suppression is a common phenomenon in the case of Zn toxicity (Collins & Zinc, 1981). The reduction in calli growth may additionally result from changes in the ultrastructure of the cells (Radi et al, 2018) or the arrest of cellular division (Ghosh et al, 2016).…”