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Effects of rare earth oxide nanoparticles on root elongation of plants
Ma YH(马宇辉); KUANG LINGLIN; He X(何潇); Bai W(白伟); Ding YY(丁雅韵); Zhang ZY(张智勇); Zhao YL(赵宇亮); Chai ZF(柴之芳); Ma, YH; Kuang, LL; He, X; Bai, W; Ding, YY; Zhang, ZY; Zhao, YL; Chai, ZF
Source PublicationCHEMOSPHERE
Corresponding AuthorZhang, ZY (reprint author), Chinese Acad Sci, Inst High Energy Phys, Key Lab Nucl Analyt Tech, Key Lab Bioenvironm Effects Nanomat & Nanosafety, POB 918, Beijing 100049, Peoples R China.
AbstractThe phytotoxicity of four rare earth oxide nanoparticles, nano-CeO2, nano-La2O3, nano-Gd2O3 and nano-Yb2O3 on seven higher plant species (radish, rape, tomato, lettuce, wheat, cabbage, and cucumber) were investigated in the present study by means of root elongation experiments. Their effects on root growth varied greatly between different nanoparticles and plant species. A suspension of 2000 mg L-1 nano-CeO2 had no effect on the root elongation of six plants, except lettuce. On the contrary, 2000 mg L-1 suspensions of nano-La2O3, nano-Gd2O3 and nano-Yb2O3 severely inhibited the root elongation of all the seven species. Inhibitory effects of nano-La2O3, nano-Gd2O3, and nano-Yb2O3 also differed in the different growth process of plants. For wheat, the inhibition mainly took place during the seed incubation process, while lettuce and rape were inhibited on both seed soaking and incubation process. The fifty percent inhibitory concentrations (IC50) for rape were about 40 mg L-1 of nanO-La2O3, 20 mg L-1 of nano-Gd2O3, and 70 mg L-1 of nano-Yb2O3, respectively. In the concentration ranges used in this study, the RE3+ ion released from the nanoparticles had negligible effects on the root elongation. These results are helpful in understanding phytotoxicity of rare earth oxide nanoparticles. (C) 2009 Elsevier Ltd. All rights reserved.
KeywordRare earth oxide Nanoparticles Phytotoxicity Root elongation Toxicity effects
Subject AreaEnvironmental Sciences & Ecology
Indexed BySCI ; ADS
WOS SubjectEnvironmental Sciences
WOS IDWOS:000274222900009
ADS Bibcode2010Chmsp..78..273M
ADS URLhttps://ui.adsabs.harvard.edu/abs/2010Chmsp..78..273M
ADS CITATIONShttps://ui.adsabs.harvard.edu/abs/2010Chmsp..78..273M/citations
Citation statistics
Cited Times:53 [ADS]
Document Type期刊论文
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GB/T 7714
Ma YH,KUANG LINGLIN,He X,et al. Effects of rare earth oxide nanoparticles on root elongation of plants[J]. CHEMOSPHERE,2010,78(3):#REF!.
APA 马宇辉.,KUANG LINGLIN.,何潇.,白伟.,丁雅韵.,...&Chai, ZF.(2010).Effects of rare earth oxide nanoparticles on root elongation of plants.CHEMOSPHERE,78(3),#REF!.
MLA 马宇辉,et al."Effects of rare earth oxide nanoparticles on root elongation of plants".CHEMOSPHERE 78.3(2010):#REF!.
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