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Origin of the different phytotoxicity and biotransformation of cerium and lanthanum oxide nanoparticles in cucumber
Ma YH(马宇辉); 张鹏(多); Zhang ZY(张智勇); He X(何潇); Li YY(李媛媛); Zhang J(张静); Zheng LR(郑黎荣); Zhao YL(赵宇亮); Chai ZF(柴之芳); Ma, YH; Zhang, P; Zhang, ZY; He, X; Li, YY; Zhang, J; Zheng, LR; Chu, SQ; Yang, K; Zhao, YL; Chai, ZF
2015
发表期刊NANOTOXICOLOGY
卷号9期号:2页码:262-270
通讯作者马宇辉 ; 张鹏(多)
摘要To investigate how the physicochemical properties of nanoparticles (NPs) affect their biological and toxicological effects, we evaluated the phytotoxicity of CeO2 and La2O3 NPs to cucumber (Cucumis sativus) plants and tried to clarify the relation between physicochemical properties of NPs and their behaviors. CeO2 NPs had no phytotoxicity to cucumber at all tested concentrations, while La2O3 NPs showed significant inhibition on root elongation (>= 2 mg/L), shoot elongation (at 2000 mg/L), root biomass (>= 2 mg/L), and shoot biomass (>= 20 mg/L), as well as induced more reactive oxygen species and cell death in roots (2000 mg/L). The different distribution and speciation of Ce and La in plants were determined by synchrotron-based micro X-ray fluorescence microscopy and X-ray absorption spectroscopy. In the aerial parts, all of La was combined with phosphate or carboxylic group, while a fraction of Ce was changed to Ce(III)-carboxyl complexes, implying that La2O3 acted as its ionic form, while CeO2 displayed the behavior of particles or particle-ion mixtures. The higher dissolution of La2O3 than CeO2 NPs might be the reason for their significant difference in phytotoxicity and transporting behaviors in cucumbers. To our knowledge, this is the first detailed study of the relation between the level of dissolution of NPs and their behaviors in plant systems.
文章类型Article
关键词Biotransformation CeO2 and La2O3 NPs dissolution phytotoxicity plants
学科领域Science & Technology - Other Topics; Toxicology
DOI10.3109/17435390.2014.921344
收录类别SCI ; CA
WOS类目Nanoscience & Nanotechnology ; Toxicology
WOS记录号WOS:000351947700014
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被引频次:24[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228381
专题院士
多学科研究中心
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Ma YH,Zhang P,Zhang ZY,et al. Origin of the different phytotoxicity and biotransformation of cerium and lanthanum oxide nanoparticles in cucumber[J]. NANOTOXICOLOGY,2015,9(2):262-270.
APA 马宇辉.,张鹏.,张智勇.,何潇.,李媛媛.,...&Chai, ZF.(2015).Origin of the different phytotoxicity and biotransformation of cerium and lanthanum oxide nanoparticles in cucumber.NANOTOXICOLOGY,9(2),262-270.
MLA 马宇辉,et al."Origin of the different phytotoxicity and biotransformation of cerium and lanthanum oxide nanoparticles in cucumber".NANOTOXICOLOGY 9.2(2015):262-270.
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