Phytotoxicity of Y2O3 nanoparticles and Y3+ ions on rice seedlings under hydroponic culture

doi:10.1016/j.chemosphere.2020.127943

	Phytotoxicity of Y2O3 nanoparticles and Y3+ ions on rice seedlings under hydroponic culture
	Zhao, Xiaohong 3; Zhang, Wenshan 1,3; He, Yuejun 2; Wang, Lingqing 1; Li, Wei 3; Yang, Liwei 3; Xing, Guohua 3
刊名	CHEMOSPHERE
	2021
卷号	263 页码:11
关键词	Y2O3 NPs Y3+ ion Uptake Phytotoxicity Rice seedling
ISSN号	0045-6535
DOI	10.1016/j.chemosphere.2020.127943
通讯作者	Wang, Lingqing(wanglq@igsnrr.ac.cn)
英文摘要	Due to the characteristics of both rare earth elements (REEs) and nanoparticles (NPs), Y2O3 NPs have been widely used in the fields of medicine, military industry, and agriculture, especially in the areas of electricity, light, magnetism, and catalysis. Given this widespread use, it is inevitable that Y2O3 NPs and soluble Y3+ will enter bodies of water through the processes involved in their preparation, application, and disposal. We sought to investigate the toxicities of Y2O3 NPs and Y3+ ions on rice seedlings (Oryza sativa L.), as well as the uptake and distribution of Y2O3 NPs under hydroponic conditions. Our results indicated that Y2O3 NPs and released Y3+ had no significant effect on the germination rate of rice. However, high concentrations of Y2O3 NPs (50 and 100 mg/L) delayed seed germination. As for rice root elongation, low concentrations (1, 5, and 10 mg/L) of Y2O3 NPs had a positive effect. Notably, when Y2O3 NPs concentration reached 20 mg/L and higher, root elongation was significantly inhibited. According to the physiological and biochemical characteristics of rice seedlings under Y stress, Y2O3 NPs ranging from 20 to 100 mg/L significantly reduced chlorophyll contents and root activity. Using ICP-MS and TEM analyses, Y2O3 NPs and Y3+ were shown to be mainly absorbed and accumulated in the roots. With Y2O3 NPs exposure, the Y transport coefficient from the roots to the shoots of rice was 1.94-7.55%. Comparatively, Y3+ ions had an insignificant effect on plant growth, with the phytotoxicity of Y being mainly produced by Y2O3 NPs. (C) 2020 Elsevier Ltd. All rights reserved.
资助项目	National Key Research and Development Program of China[2018YFC1802800] ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP)[2019QZKK1003] ; Key Research and Development Program of Shaanxi[2020SF-403]
WOS关键词	RARE-EARTH-ELEMENTS ; OXIDE NANOPARTICLES ; LANTHANUM ; L. ; BIOTRANSFORMATION ; STRESS ; GROWTH ; CUO ; ZNO ; TOXICITY
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000595802200084
资助机构	National Key Research and Development Program of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Key Research and Development Program of Shaanxi
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/137817]
专题	中国科学院地理科学与资源研究所
通讯作者	Wang, Lingqing
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 2.North China Inst Aerosp Engn, Langfang 065000, Peoples R China 3.Changan Univ, Sch Civil Engn, Xian 710061, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Xiaohong,Zhang, Wenshan,He, Yuejun,et al. Phytotoxicity of Y2O3 nanoparticles and Y3+ ions on rice seedlings under hydroponic culture[J]. CHEMOSPHERE,2021,263:11.
APA	Zhao, Xiaohong.,Zhang, Wenshan.,He, Yuejun.,Wang, Lingqing.,Li, Wei.,...&Xing, Guohua.(2021).Phytotoxicity of Y2O3 nanoparticles and Y3+ ions on rice seedlings under hydroponic culture.CHEMOSPHERE,263,11.
MLA	Zhao, Xiaohong,et al."Phytotoxicity of Y2O3 nanoparticles and Y3+ ions on rice seedlings under hydroponic culture".CHEMOSPHERE 263(2021):11.