Phytotoxicity of ZnO nanoparticles and the released Zn(II) ion to corn (Zea mays L.) and cucumber (Cucumis sativus L.) during germination

Environmental Science and Pollution Research International
Ruichang ZhangPeter Christie

Abstract

Toxicity of engineered nanoparticles on organisms is of concern worldwide due to their extensive use and unique properties. The impacts of ZnO nanoparticles (ZnO NPs) on seed germination and root elongation of corn (Zea mays L.) and cucumber (Cucumis sativus L.) were investigated in this study. The role of seed coats of corn in the mitigation toxicity of nanoparticles was also evaluated. ZnO NPs (1,000 mg L(-1)) reduced root length of corn and cucumber by 17 % (p < 0.05) and 51 % (p < 0.05), respectively, but exhibited no effects on germination. In comparison with Zn(2+), toxicity of ZnO NPs on the root elongation of corn could be attributed to the nanoparticulate ZnO, while released Zn ion from ZnO could solely contribute to the inhibition of root elongation of cucumber. Zn uptake in corn exposed to ZnO NPs during germination was much higher than that in corn exposed to Zn(2+), whereas Zn uptake in cucumber was significantly correlated with soluble Zn in suspension. It could be inferred that Zn was taken up by corn and cucumber mainly in the form of ZnO NPs and soluble Zn, respectively. Transmission electron microscope confirmed the uptake of ZnO NPs into root of corn. Although isolation of the seed coats might not be the prin...Continue Reading

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Citations

Feb 3, 2016·Journal of Hazardous Materials·Anan WangPeter Christie
Mar 21, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Muhammad Arslan AhmadYuesuo Yang
Jun 12, 2019·Environmental Science and Pollution Research International·Wei ZhangHui Zeng
Apr 9, 2020·International Journal of Environmental Research and Public Health·Wei ZhangHui Zeng
Jun 5, 2020·Environmental Science and Pollution Research International·Wei WangZhiwen Cui
Sep 22, 2018·Environmental Science and Pollution Research International·Mohamed S Youssef, Rabab M Elamawi
May 4, 2016·Plant Physiology and Biochemistry : PPB·Wenchao DuHongyan Guo
Jul 22, 2018·Environmental Pollution·Venkata L Reddy PullaguralaJorge L Gardea-Torresdey
Jan 6, 2021·Ecotoxicology and Environmental Safety·Roshanak TarrahiAlireza Khataee
May 28, 2021·Environmental Science and Pollution Research International·Mohamed Salah SheteiwyTianow Wu
Jun 15, 2021·Frontiers in Plant Science·Sunny AhmarKi-Hung Jung
Nov 14, 2018·Journal of Agricultural and Food Chemistry·Zeinah Elhaj Baddar, Jason M Unrine
May 26, 2018·Journal of Agricultural and Food Chemistry·Nádia M DuranHudson W Pereira de Carvalho

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