IHEP OpenIR  > 北京同步辐射装置
Comparative toxicity of rod-shaped nano-CeO2 and nano-CePO4 to lettuce
BSRF用户
2021
Source PublicationMETALLOMICS
ISSN1756-5901
EISSN1756-591X
Volume13Issue:7Pages:mfab033
SubtypeArticle
AbstractThe influence of morphology on the biological effects of nanomaterials (NMs) has not been well understood. In the present study, we compared the phytotoxicity of rod-shaped nano-cerium dioxide (R-CeO2) and nano-cerium phosphate (R-CePO4) to lettuce plants. The results showed that R-CeO2 significantly inhibited the root elongation of lettuce, induced oxidative damages, and caused cell death, while R-CePO4 was nontoxic to lettuce. The different distribution and speciation of Ce in plant tissues were determined by transmission electron microscopy (TEM) and X-ray absorption near edge spectroscopy (XANES) combined with linear combination fitting (LCF). The results showed that in the R-CeO2 group, part of Ce was transformed from Ce(IV) to Ce(III), while only Ce(III) was present in the R-CePO4 group. When interacting with plants, R-CeO2 is easier to be dissolved and transformed than R-CePO4, which might be the reason for their different phytotoxicity. Although both are Ce-based NMs and have the same morphology, the toxicity of R-CeO2 seems to come from the released Ce3+ ions rather than its shape. This research emphasizes the importance of chemical composition and reactivity of NMs to their toxicological effects.
DOI10.1093/mtomcs/mfab033
Indexed BySCI
Language英语
WOS Research AreaBiochemistry & Molecular Biology
WOS SubjectBiochemistry & Molecular Biology
WOS IDWOS:000697155100001
ItemNoBSRF00919
beamline1W1B
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/293687
Collection北京同步辐射装置
Recommended Citation
GB/T 7714
BSRF用户. Comparative toxicity of rod-shaped nano-CeO2 and nano-CePO4 to lettuce[J]. METALLOMICS,2021,13(7):mfab033.
APA BSRF用户.(2021).Comparative toxicity of rod-shaped nano-CeO2 and nano-CePO4 to lettuce.METALLOMICS,13(7),mfab033.
MLA BSRF用户."Comparative toxicity of rod-shaped nano-CeO2 and nano-CePO4 to lettuce".METALLOMICS 13.7(2021):mfab033.
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