Translocation and biotransformation of CuO nanoparticles in rice (Oryza sativa L.) plants

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	Translocation and biotransformation of CuO nanoparticles in rice (Oryza sativa L.) plants
	Peng, C; Duan, DC; Xu, C; Chen, YS; Sun, LJ; Zhang, H; Yuan, XF; Zheng, LR; Yang, YQ; Yang, JJ
刊名	ENVIRONMENTAL POLLUTION
	2015
卷号	197 页码:99—107
关键词	CERIUM OXIDE NANOPARTICLES SOYBEAN GLYCINE-MAX ZNO NANOPARTICLES ENGINEERED NANOMATERIALS ELSHOLTZIA-SPLENDENS TROPHIC TRANSFER CUCUMBER PLANTS ORGANIC-MATTER COPPER SPECIATION
英文摘要	Metal-based nanoparticles (MNPs) may be translocated and biochemically modified in vivo, which may influence the fate of MNPs in the environment. Here, synchrotron-based techniques were used to investigate the behavior of CuO NPs in rice plants exposed to 100 mg/L CuO NPs for 14 days. Micro X-ray fluorescence (mu-XRF) and micro X-ray absorption near edge structure (mu-XANES) analysis revealed that CuO NPs moved into the root epidermis, exodermis, and cortex, and they ultimately reached the endodermis but could not easily pass the Casparian strip; however, the formation of lateral roots provided a potential pathway for MNPs to enter the stele. Moreover, bulk-XANES data showed that CuO NPs were transported from the roots to the leaves, and that Cu (II) combined with cysteine, citrate, and phosphate ligands and was even reduced to Cu (I). CuO NPs and Cu-citrate were observed in the root cells using soft X-ray scanning transmission microscopy (STXM). (C) 2014 Elsevier Ltd. All rights reserved.
收录类别	SCI
语种	英语
公开日期	2015-12-24
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/24612]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
推荐引用方式 GB/T 7714	Peng, C,Duan, DC,Xu, C,et al. Translocation and biotransformation of CuO nanoparticles in rice (Oryza sativa L.) plants[J]. ENVIRONMENTAL POLLUTION,2015,197:99—107.
APA	Peng, C.,Duan, DC.,Xu, C.,Chen, YS.,Sun, LJ.,...&Shi, JY.(2015).Translocation and biotransformation of CuO nanoparticles in rice (Oryza sativa L.) plants.ENVIRONMENTAL POLLUTION,197,99—107.
MLA	Peng, C,et al."Translocation and biotransformation of CuO nanoparticles in rice (Oryza sativa L.) plants".ENVIRONMENTAL POLLUTION 197(2015):99—107.