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题名: SILVER NANOPARTICLES INDUCED ACCUMULATION OF REACTIVE OXYGEN SPECIES AND ALTERATION OF ANTIOXIDANT SYSTEMS IN THE AQUATIC PLANT SPIRODELA POLYRHIZA
作者: Jiang, Hong-Sheng1, 2, 5; Qiu, Xiao-Ni1, 2, 5; Li, Gen-Bao3; Li, Wei1, 4; Yin, Li-Yan1, 2
通讯作者: Yin, LY (reprint author), Chinese Acad Sci, Wuhan Bot Garden, Key Lab Aquat Bot & Watershed Ecol, Wuhan, Peoples R China.
关键词: Silver nanoparticles ; Aquatic plant ; Nanotoxicology ; Oxidative stress ; Ultrastructure
刊名: ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
发表日期: 2014-06-01
DOI: 10.1002/etc.2577
卷: 33, 期:6, 页:1398-1405
收录类别: SCI
文章类型: Article
部门归属: [Jiang, Hong-Sheng; Qiu, Xiao-Ni; Li, Wei; Yin, Li-Yan] Chinese Acad Sci, Wuhan Bot Garden, Key Lab Aquat Bot & Watershed Ecol, Wuhan, Peoples R China; [Jiang, Hong-Sheng; Qiu, Xiao-Ni; Yin, Li-Yan] Hainan Univ, Hainan Key Lab Sustainable Utilizat Trop Bioresou, Haikou, Peoples R China; [Li, Gen-Bao] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan, Peoples R China; [Li, Wei] Chinese Acad Sci, Wuhan Bot Garden, Hubei Key Lab Wetland Evolut & Ecol Restorat, Wuhan, Peoples R China; [Jiang, Hong-Sheng; Qiu, Xiao-Ni] Univ Chinese Acad Sci, Beijing, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: National Natural Science Foundation of China [31170481, 30700083]; Wuhan Chen Guang Project [201150431069]; Open Project of State Key Laboratory of Freshwater Ecology and Biotechnology [2013FB12]
类目[WOS]: Environmental Sciences ; Toxicology
研究领域[WOS]: Environmental Sciences & Ecology ; Toxicology
摘要: Silver nanoparticles (AgNPs) are widely used commercially because of their antibacterial properties. Oxidative stress is known to be involved in the toxicity of AgNPs to bacteria, animals, and algae. The authors used Spirodela polyrhiza to investigate whether AgNPs can induce oxidative stress in higher plants. Results showed that there was a dose-dependent increase in levels of reactive oxygen species, superoxide dismutase and peroxidase activity, and the antioxidant glutathione content in 6-nm AgNP treatments. Catalase activity and malondialdehyde content in 6-nm AgNP treatments was significantly higher than the control at silver concentrations of 5mgL(-1). Superoxide dismutase and catalase activity and antioxidant glutathione and malondialdehyde content were not significantly different at 10mgL(-1) of AgNPs (6nm and 20nm). Treatment with 20 mu gL(-1) Ag+ (the amount almost equal to 10mgL(-1) AgNPs released) did not change the reactive oxygen species level or antioxidant enzymes activity. Micron-sized Ag particles had no effect on S. polyrhiza. Transmission electron microscopy showed that, compared with the control, chloroplasts in S. polyrhiza treated with 6-nm and 20-nm AgNPs accumulated starch grains and had reduced intergranal thylakoids. These results clearly indicate that AgNPs are able to cause oxidative stress and affect the chloroplast structure and function of S. polyrhiza, and this effect was not caused by Ag+ released from particles. Environ Toxicol Chem 2014;33:1398-1405. (c) 2014 SETAC
英文摘要: Silver nanoparticles (AgNPs) are widely used commercially because of their antibacterial properties. Oxidative stress is known to be involved in the toxicity of AgNPs to bacteria, animals, and algae. The authors used Spirodela polyrhiza to investigate whether AgNPs can induce oxidative stress in higher plants. Results showed that there was a dose-dependent increase in levels of reactive oxygen species, superoxide dismutase and peroxidase activity, and the antioxidant glutathione content in 6-nm AgNP treatments. Catalase activity and malondialdehyde content in 6-nm AgNP treatments was significantly higher than the control at silver concentrations of 5mgL(-1). Superoxide dismutase and catalase activity and antioxidant glutathione and malondialdehyde content were not significantly different at 10mgL(-1) of AgNPs (6nm and 20nm). Treatment with 20 mu gL(-1) Ag+ (the amount almost equal to 10mgL(-1) AgNPs released) did not change the reactive oxygen species level or antioxidant enzymes activity. Micron-sized Ag particles had no effect on S. polyrhiza. Transmission electron microscopy showed that, compared with the control, chloroplasts in S. polyrhiza treated with 6-nm and 20-nm AgNPs accumulated starch grains and had reduced intergranal thylakoids. These results clearly indicate that AgNPs are able to cause oxidative stress and affect the chloroplast structure and function of S. polyrhiza, and this effect was not caused by Ag+ released from particles. Environ Toxicol Chem 2014;33:1398-1405. (c) 2014 SETAC
关键词[WOS]: OXIDATIVE STRESS ; GLUTATHIONE-REDUCTASE ; NANOSILVER TOXICITY ; LIPID-PEROXIDATION ; DAPHNIA-MAGNA ; CELLS ; VIABILITY ; EXPOSURE ; BACTERIA ; SIZE
语种: 英语
WOS记录号: WOS:000335936900020
ISSN号: 0730-7268
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/20063
Appears in Collections:水环境工程研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Aquat Bot & Watershed Ecol, Wuhan, Peoples R China
2.Hainan Univ, Hainan Key Lab Sustainable Utilizat Trop Bioresou, Haikou, Peoples R China
3.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan, Peoples R China
4.Chinese Acad Sci, Wuhan Bot Garden, Hubei Key Lab Wetland Evolut & Ecol Restorat, Wuhan, Peoples R China
5.Univ Chinese Acad Sci, Beijing, Peoples R China

Recommended Citation:
Jiang, Hong-Sheng; Qiu, Xiao-Ni; Li, Gen-Bao; Li, Wei; Yin, Li-Yan.SILVER NANOPARTICLES INDUCED ACCUMULATION OF REACTIVE OXYGEN SPECIES AND ALTERATION OF ANTIOXIDANT SYSTEMS IN THE AQUATIC PLANT SPIRODELA POLYRHIZA,ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY,2014,33(6):1398-1405
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