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DOI10.3390/nano11040921
Synchrotron radiation spectroscopy and transmission electron microscopy techniques to evaluate tio2 nps incorporation; speciation; and impact on root cells ultrastructure of pisum sativum l. Plants
Muccifora S.; Castillo-Michel H.; Barbieri F.; Bellani L.; Castiglione M.R.; Spanò C.; Pradas Del Real A.E.; Giorgetti L.; Tassi E.L.
发表日期2021
ISSN20794991
卷号11期号:4
英文摘要Biosolids (Bs) for use in agriculture are an important way for introducing and transferring TiO2 nanoparticles (NPs) to plants and food chain. Roots of Pisum sativum L. plants grown in Bs-amended soils spiked with TiO2 800 mg/kg as rutile NPs, anatase NPs, mixture of both NPs and submicron particles (SMPs) were investigated by Transmission Electron Microscopy (TEM), synchrotron radiation based micro X-ray Fluorescence and micro X-ray Absorption Near-Edge Structure (µXRF/µXANES) and Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES). TEM analysis showed damages in cells ultrastructure of all treated samples, although a more evident effect was observed with single anatase or rutile NPs treatments. Micro-XRF and TEM evidenced the presence of nano and SMPs mainly in the cortex cells near the rhizodermis. Micro-XRF/micro-XANES analysis revealed anatase, rutile, and ilmenite as the main TiO2 polymorphs in the original soil and Bs, and the preferential anatase uptake by the roots. For all treatments Ti concentration in the roots increased by 38–56%, however plants translocation factor (TF) increased mostly with NPs treatment (261–315%) and less with SMPs (about 85%), with respect to control. In addition, all samples showed a limited transfer of TiO2 to the shoots (very low TF value). These findings evidenced a potential toxicity of TiO2 NPs present in Bs and accumulating in soil, suggesting the necessity of appropriate regulations for the occurrence of NPs in Bs used in agriculture. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
英文关键词Agricultural soil; Anatase nanoparticles; Cell ultrastructure; Crystalline phase; Micro-XANES; Micro-XRF; Pea roots; Rutile nanoparticles; TEM; Titanium dioxide nanoparticles
来源期刊Nanomaterials
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/177205
作者单位Department of Life Sciences, University of Siena, Via A. Moro 2, Siena, 53100, Italy; European Synchrotron Radiation Facility, Beamline ID21, 71 Av. Rue des Martyrs, Grenoble, 38000, France; Institute of Agricultural Biology and Biotechnology, National Research Council, Via Moruzzi 1, Pisa, 56124, Italy; Department of Biology, University of Pisa, Via Ghini 13, Pisa, 56126, Italy; Research Institute on Terrestrial Ecosystems, National Research Council, Via Moruzzi 1, Pisa, 56124, Italy
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Muccifora S.,Castillo-Michel H.,Barbieri F.,et al. Synchrotron radiation spectroscopy and transmission electron microscopy techniques to evaluate tio2 nps incorporation; speciation; and impact on root cells ultrastructure of pisum sativum l. Plants[J],2021,11(4).
APA Muccifora S..,Castillo-Michel H..,Barbieri F..,Bellani L..,Castiglione M.R..,...&Tassi E.L..(2021).Synchrotron radiation spectroscopy and transmission electron microscopy techniques to evaluate tio2 nps incorporation; speciation; and impact on root cells ultrastructure of pisum sativum l. Plants.Nanomaterials,11(4).
MLA Muccifora S.,et al."Synchrotron radiation spectroscopy and transmission electron microscopy techniques to evaluate tio2 nps incorporation; speciation; and impact on root cells ultrastructure of pisum sativum l. Plants".Nanomaterials 11.4(2021).
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