The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Impact of Surface Charge on Cerium Oxide Nanoparticle Uptake and Translocation by Wheat (Triticum aestivum)
Abstract
Nanoparticle (NP) physiochemical properties, including surface charge, affect cellular uptake, translocation, and tissue localization. To evaluate the influence of surface charge on NP uptake by plants, wheat seedlings were hydroponically exposed to 20 mg/L of ∼4 nm CeO 2 NPs functionalized with positively charged, negatively charged, and neutral dextran coatings. Fresh, hydrated roots and leaves were analyzed at various time points over 34 h using fluorescence X-ray absorption near-edge spectroscopy to provide laterally resolved spatial distribution and speciation of Ce. A 15–20% reduction from Ce(IV) to Ce(III) was observed in both roots and leaves, independent of NP surface charge. Because of its higher affinity with negatively charged cell walls, CeO 2 (+) NPs adhered to the plant roots the strongest. After 34 h, CeO 2 (−), and CeO 2 (0) NP exposed plants had higher Ce leaf concentrations than the plants exposed to CeO 2 (+) NPs. Whereas Ce was found mostly in the leaf veins of the CeO 2 (−) NP exposed plant, Ce was found in clusters in the nonvascular leaf tissue of the CeO 2 (0) NP exposed plant. These results provide important information for understanding mechanisms responsible for plant uptake, transformation, and translocation of NPs, and suggest that NP coatings can be designed to target NPs to specific parts of plants.
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Gräfe, M., Donner, E., Collins, R. N., & Lombi, E. (2014) · Analytica Chimica Acta · doi:10.1016/j.aca.2014.02.044 · Cited by 186
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Wu, H., Tito, N., & Giraldo, J. P. (2017) · ACS Nano · doi:10.1021/acsnano.7b05723 · Cited by 533
Nanoparticles in Plants: Uptake, Transport and Physiological Activity in Leaf and Root
Wang, X., Xie, H., Wang, P., & Yin, H. (2023) · Materials · doi:10.3390/ma16083097 · Cited by 518
Xu, Y., Ou, Q., van der Hoek, J. P., Liu, G., & Lompe, K. M. (2024) · Environmental Science & Technology · doi:10.1021/acs.est.3c07035 · Cited by 325
Metadata
- Authors
- Spielman-Sun, E., Lombi, E., Donner, E., Howard, D., Unrine, J. M., & Lowry, G. V.
- Venue
- Environmental Science & Technology
- Publisher
- American Chemical Society (ACS)
- Published
- 2017-06-16
- Volume
- 51
- Issue
- 13
- Pages
- 7361-7368
- ISSN
- 0013-936X (ISSN-L)
- 1520-5851
- OpenAlex
- W2621251745
- Cited by
- 190
- References
- 1
- FWCI
- 6.66
- Type
- journal article
- Language
- en
- Open access
- closed
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