Germination and early plant development of ten plant species exposed to titanium dioxide and cerium oxide nanoparticles

Environmental Toxicology and Chemistry
Christian P AndersenPaul T Rygiewicz

Abstract

Ten agronomic plant species were exposed to different concentrations of nano-titanium dioxide (nTiO2 ) or nano-cerium oxide (nCeO2 ) (0 μg/mL, 250 μg/mL, 500 μg/mL, and 1000 μg/mL) to examine potential effects on germination and early seedling development. The authors modified a standard test protocol developed for soluble chemicals (OPPTS 850.4200) to determine if such an approach might be useful for screening engineered nanomaterials (ENMs) and whether there were differences in response across a range of commercially important plant species to 2 common metal oxide ENMs. Eight of 10 species responded to nTiO2 , and 5 species responded to nCeO2 . Overall, it appeared that early root growth may be a more sensitive indicator of potential effects from ENM exposure than germination. The observed effects did not always relate to the exposure concentration, indicating that mass-based concentration may not fully explain the developmental effects of these 2 ENMs. The results suggest that nTiO2 and nCeO2 have different effects on early plant growth of agronomic species, with unknown effects at later stages of the life cycle. In addition, standard germination tests, which are commonly used for toxicity screening of new materials, may not...Continue Reading

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Citations

Mar 17, 2017·Plant Physiology and Biochemistry : PPB·Sanam NazaralianMaria Greger
Feb 27, 2017·Environmental Pollution·Guohua WangZhiyong Zhang
Dec 3, 2016·Plant Physiology and Biochemistry : PPB·Saeed AminiSeyyedeh-Sanam Kazemi-Shahandashti
May 24, 2016·Environmental Toxicology and Chemistry·Laxminath TumburuJay R Reichman
Feb 9, 2017·Nanoscale Research Letters·Khwaja Salahuddin Siddiqi, Azamal Husen
May 11, 2017·Frontiers in Plant Science·Shiheng LyuDongming Pan
May 29, 2020·IET Nanobiotechnology·Somya Ranjan Dash, Chanakya Nath Kundu
May 30, 2020·Bulletin of Environmental Contamination and Toxicology·Jinxing LiTingqiang Li
Jul 29, 2020·Environmental Science and Pollution Research International·Ali Daryabeigi ZandAzar Vaezi Heir
Nov 20, 2020·Environmental Science and Pollution Research International·Deep Shikha, Prasoon Kumar Singh
Dec 6, 2020·Nanomaterials·Haleema Saleem, Syed Javaid Zaidi
May 4, 2016·Plant Physiology and Biochemistry : PPB·Wenchao DuHongyan Guo
Jun 21, 2021·Ecotoxicology and Environmental Safety·Ved PrakashShivesh Sharma

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