Toxicity of single-walled carbon nanotubes on green microalga Chromochloris zofingiensis

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	Toxicity of single-walled carbon nanotubes on green microalga Chromochloris zofingiensis
	Wang Yan; Yang Kaijing
刊名	CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
	2013-03-01
卷号	31 期号:2 页码:306-311
关键词	Carbon Nanotubes Pigmentation Cell Growth Chromochloris Zofingiensis
ISSN号	0254-4059
通讯作者	Wang, Y (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China. ywang@yic.ac.cn
产权排序	[Wang Yan; Yang Kaijing] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China
文献子类	Article
英文摘要	Nanoparticles, or particles in size of 1-100 nm, are extensively used in the world in different applications. For instance, single-walled carbon nanotubes (SWCNTs) are commonly used in consumer products, such as biosensors, drug and vaccine delivery transporters, and novel biomaterials. Although nanoparticles do not cause safety concerns to consumers who use nanoparticle-containing products, these small particles are potentially harmful for workers who produce them in factories or in cases of discharge to aquatic ecosystems. SWCNTs do not have a natural analogue, so the effects on health of their disposal remain largely unknown. In this study, we evaluated the effects of SWCNTs on a population of the green microalga Chromochloris zofingiensis and the profile and production of pigments and fatty acids. The alga was incubated with SWCNTs for 6 days in 0 (control), 40, 80, 160, or 320 mg/L concentrations. SWCNTs showed both positive and negative effects on the growth of C. zofingiensis, with a biomass enhancement at low levels (40-160 mg/L) but inhibition at high levels (320 mg/L). By contrast, a decreased accumulation of fatty acids and pigments of C. zofingiensis was observed over the range of the tested concentrations. These results indicate that the markers on the inhibitive toxicity of SWCNTs are increasingly sensitive in the following order: biomass and fatty acids < primary carotenoids < chlorophylls < secondary carotenoids. C. zofingiensis is a suitable microalga for evaluating the ecotoxicological hazards of SWCNTs, especially in terms of pigmentation response.; Nanoparticles, or particles in size of 1-100 nm, are extensively used in the world in different applications. For instance, single-walled carbon nanotubes (SWCNTs) are commonly used in consumer products, such as biosensors, drug and vaccine delivery transporters, and novel biomaterials. Although nanoparticles do not cause safety concerns to consumers who use nanoparticle-containing products, these small particles are potentially harmful for workers who produce them in factories or in cases of discharge to aquatic ecosystems. SWCNTs do not have a natural analogue, so the effects on health of their disposal remain largely unknown. In this study, we evaluated the effects of SWCNTs on a population of the green microalga Chromochloris zofingiensis and the profile and production of pigments and fatty acids. The alga was incubated with SWCNTs for 6 days in 0 (control), 40, 80, 160, or 320 mg/L concentrations. SWCNTs showed both positive and negative effects on the growth of C. zofingiensis, with a biomass enhancement at low levels (40-160 mg/L) but inhibition at high levels (320 mg/L). By contrast, a decreased accumulation of fatty acids and pigments of C. zofingiensis was observed over the range of the tested concentrations. These results indicate that the markers on the inhibitive toxicity of SWCNTs are increasingly sensitive in the following order: biomass and fatty acids < primary carotenoids < chlorophylls < secondary carotenoids. C. zofingiensis is a suitable microalga for evaluating the ecotoxicological hazards of SWCNTs, especially in terms of pigmentation response.
学科主题	Limnology ; Oceanography
URL标识	查看原文
WOS关键词	BACTERIUM AZOSPIRILLUM-BRASILENSE ; CHLORELLA-ZOFINGIENSIS ; POPULATION-SIZE ; ORGANIC-MATTER ; ALGINATE BEADS ; STRESS ; GROWTH ; ASTAXANTHIN ; VULGARIS ; NITROGEN
WOS研究方向	Marine & Freshwater Biology ; Oceanography
语种	英语
WOS记录号	WOS:000316018300006
资助机构	National Natural Science Foundation of China [50904051]; Science and Technology Planning Project of Yantai, China [2010247]; Open Fund of Shandong Oriental Ocean Sci-Tech Co., Ltd. [200803]
公开日期	2013-08-14
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/6473]
专题	烟台海岸带研究所_海岸带生物学与生物资源利用所重点实验室
作者单位	Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China
推荐引用方式 GB/T 7714	Wang Yan,Yang Kaijing. Toxicity of single-walled carbon nanotubes on green microalga Chromochloris zofingiensis[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2013,31(2):306-311.
APA	Wang Yan,&Yang Kaijing.(2013).Toxicity of single-walled carbon nanotubes on green microalga Chromochloris zofingiensis.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,31(2),306-311.
MLA	Wang Yan,et al."Toxicity of single-walled carbon nanotubes on green microalga Chromochloris zofingiensis".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 31.2(2013):306-311.