Influence of Speciation of Thorium on Toxic Effects to Green Algae Chlorella pyrenoidosa

doi:10.3390/ijms18040795

	Influence of Speciation of Thorium on Toxic Effects to Green Algae Chlorella pyrenoidosa
	Wang DQ(王东琪); Lan T(兰图); Zhang P(张鹏); He X(何潇); Ding YY(丁雅韵); Ma YH(马宇辉); Peng, C; Zhang, ZH; Zhang, ZY; Wang, DQ
刊名	INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
	2017
卷号	18 期号:4 页码:795
关键词	thorium speciation toxicity green algae Chlorella pyrenoidosa
ISSN号	1422-0067
DOI	10.3390/ijms18040795
文献子类	Article
英文摘要	Thorium (Th) is a natural radioactive element present in the environment and has the potential to be used as a nuclear fuel. Relatively little is known about the influence and toxicity of Th in the environment. In the present study, the toxicity of Th to the green algae Chlorella pyrenoidosa (C. pyrenoidosa) was evaluated by algal growth inhibition, biochemical assays and morphologic observations. In the cultural medium (OECD TG 201), Th(NO3)(4) was transformed to amorphous precipitation of Th(OH)(4) due to hydrolysis. Th was toxic to C. pyrenoidosa, with a 96 h half maximum effective concentration (EC50) of 10.4 mu M. Scanning electron microscopy shows that Th-containing aggregates were attached onto the surface of the algal cells, and transmission electron microscopy indicates the internalization of nano-sized Th precipitates and ultrastructural alterations of the algal cells. The heteroagglomeration between Th(OH)(4) precipitation and alga cells and enhanced oxidative stress might play important roles in the toxicity of Th. To our knowledge, this is the first report of the toxicity of Th to algae with its chemical species in the exposure medium. This finding provides useful information on understanding the fate and toxicity of Th in the aquatic environment.
WOS关键词	CARBON NANOTUBES ; WATER ; NANOPARTICLES ; GROWTH ; CERIUM ; STATE ; SIZE
WOS研究方向	Biochemistry & Molecular Biology ; Chemistry
语种	英语
WOS记录号	WOS:000402639400119
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/285213]
专题	高能物理研究所_多学科研究中心高能物理研究所_实验物理中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Wang DQ,Lan T,Zhang P,et al. Influence of Speciation of Thorium on Toxic Effects to Green Algae Chlorella pyrenoidosa[J]. INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES,2017,18(4):795.
APA	王东琪.,兰图.,张鹏.,何潇.,丁雅韵.,...&张智勇.(2017).Influence of Speciation of Thorium on Toxic Effects to Green Algae Chlorella pyrenoidosa.INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES,18(4),795.
MLA	王东琪,et al."Influence of Speciation of Thorium on Toxic Effects to Green Algae Chlorella pyrenoidosa".INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES 18.4(2017):795.