Toxicological effects of pure and amine-functionalized ZnO nanorods on Daphnia magna and Lactuca sativa

Abstract

Exposure to ZnO NRs can cause acute and chronic effects on D. magna and it was possible to visualize the internalization of ZnO NRs in the organisms. Effects on the germination, development, and morphology of L. sativa were also observed.

A critical review on the toxicity regulation and ecological risks of zinc oxide nanoparticles to plants

“…64 Similarly, after ZnO NP treatment, a bunch of dense particle deposits were found in the cellular matrix of root cells that exhibited obvious disintegration and structural deformation, 73 and severely disrupted the physiological structure and state of root tissues. 74 Exposure to ZnO NPs equally inhibits the normal growth of stems, leaves and cells, not only by reducing photosynthetic pigments and biomass in seedlings 59 but also by perturbing the biochemical processes of growth factors in cells. Different concentrations of ZnO NPs reduced the fresh weight of Oryza sativa L. shoot tissues by 16.9-48.5%, 59 and Fagopyrum esculentum biomass significantly by 7.7-26.4%, and incrementally raised the bioaccumulation of Zn with the increase in concentrations.…”

“…64 Similarly, after ZnO NP treatment, a bunch of dense particle deposits were found in the cellular matrix of root cells that exhibited obvious disintegration and structural deformation, 73 and severely disrupted the physiological structure and state of root tissues. 74…”

Reducing Gut Dissolution of Zinc Oxide Nanoparticles by Secondary Microplastics with Consequent Impacts on Barnacle Larvae

“…Though in vitro dissolution of n ZnO to Zn ions can occur, the observed bioeffects of n ZnO on zooplankton cannot be solely attributed to the in vitro dissolved Zn, whereas n ZnO also plays a role. , For example, the ingestion of particulate n ZnO contributed a larger fraction (69%) to the overall toxicity compared to dissolved Zn, with n ZnO predominatedly accumulating in the gut tract . Subsequent gut injury caused by n ZnO can be attributed to both mechanical friction exerted by n ZnO and in vivo dissolved Zn …”