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Phytotoxicity of ZnO nanoparticles and the released Zn(II) ion to corn (Zea mays L.) and cucumber (Cucumis sativus L.) during germination.
Environ Sci Pollut Res Int. 2015 Jul; 22(14):11109-17.ES

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 principal factor that achieved avoidance from toxicity on germination, seed coats of corn were found to mitigate the toxicity of ZnO NPs on root elongation and prevent approximately half of the Zn from entering into root and endosperm.

Authors+Show Affiliations

Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

25794580

Citation

Zhang, Ruichang, et al. "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, vol. 22, no. 14, 2015, pp. 11109-17.
Zhang R, Zhang H, Tu C, et al. Phytotoxicity of ZnO nanoparticles and the released Zn(II) ion to corn (Zea mays L.) and cucumber (Cucumis sativus L.) during germination. Environ Sci Pollut Res Int. 2015;22(14):11109-17.
Zhang, R., Zhang, H., Tu, C., Hu, X., Li, L., Luo, Y., & Christie, P. (2015). 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, 22(14), 11109-17. https://doi.org/10.1007/s11356-015-4325-x
Zhang R, et al. Phytotoxicity of ZnO Nanoparticles and the Released Zn(II) Ion to Corn (Zea Mays L.) and Cucumber (Cucumis Sativus L.) During Germination. Environ Sci Pollut Res Int. 2015;22(14):11109-17. PubMed PMID: 25794580.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Phytotoxicity of ZnO nanoparticles and the released Zn(II) ion to corn (Zea mays L.) and cucumber (Cucumis sativus L.) during germination. AU - Zhang,Ruichang, AU - Zhang,Haibo, AU - Tu,Chen, AU - Hu,Xuefeng, AU - Li,Lianzhen, AU - Luo,Yongming, AU - Christie,Peter, Y1 - 2015/03/22/ PY - 2014/10/24/received PY - 2015/03/05/accepted PY - 2015/3/22/entrez PY - 2015/3/22/pubmed PY - 2016/2/16/medline SP - 11109 EP - 17 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 22 IS - 14 N2 - 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 principal factor that achieved avoidance from toxicity on germination, seed coats of corn were found to mitigate the toxicity of ZnO NPs on root elongation and prevent approximately half of the Zn from entering into root and endosperm. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/25794580/Phytotoxicity_of_ZnO_nanoparticles_and_the_released_Zn_II__ion_to_corn__Zea_mays_L___and_cucumber__Cucumis_sativus_L___during_germination_ L2 - https://dx.doi.org/10.1007/s11356-015-4325-x DB - PRIME DP - Unbound Medicine ER -