Accumulation and phytotoxicity of technical hexabromocyclododecane in maize
文献类型：期刊论文
| 作者 | Wu, Tong; Huang, Honglin; Zhang, Shuzhen |
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES
 |
| 出版日期 | 2016-04 |
| 卷号 | 42期号:0页码:97-104 |
| 关键词 | Technical hexabromocyclododecane (HBCD) Plant uptake Oxidative toxicity DNA damage |
| 英文摘要 | To investigate the accumulation and phytotoxicity of technical hexabromocyclododecane (HBCD) in maize, young seedlings were exposed to solutions of technical HBCD at different concentrations. The uptake kinetics showed that the HBCD concentration reached an apparent equilibrium within 96 hr, and the accumulation was much higher in roots than in shoots. HBCD accumulation in maize had a positive linear correlation with the exposure concentration. The accumulation of different diastereoisomers followed the order gamma-HBCD > beta-HBCD > alpha-HBCD. Compared with their proportions in the technical HBCD exposure solution, the diastereoisomer contribution increased for beta-HBCD and decreased for alpha-HBCD in both maize roots and shoots with exposure time, whereas the contribution of beta-HBCD increased in roots and decreased in shoots throughout the experimental period. These results suggest the diastereomer-specific accumulation and translocation of HBCD in maize. Inhibitory effects of HBCD on the early development of maize followed the order of germination rate > root biomass >= root elongation > shoot biomass >= shoot elongation. Hydroxyl radical (center dot OH) and histone H2AX phosphorylation (gamma-H2AX) were induced in maize by HBCD exposure, indicative of the generation of oxidative stress and DNA double-strand breaks in maize. An center dot OH scavenger inhibited the expression of gamma-H2AX foci in both maize roots and shoots, which suggests the involvement of center dot OH generation in the HBCD-induced DNA damage. The results of this study will offer useful information for a more comprehensive assessment of the environmental behavior and toxicity of technical HBCD. (C) 2015 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
| 收录类别 | SCI |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/35795]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Wu, Tong,Huang, Honglin,Zhang, Shuzhen. Accumulation and phytotoxicity of technical hexabromocyclododecane in maize[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2016,42(0):97-104. |
| APA | Wu, Tong,Huang, Honglin,&Zhang, Shuzhen.(2016).Accumulation and phytotoxicity of technical hexabromocyclododecane in maize.JOURNAL OF ENVIRONMENTAL SCIENCES,42(0),97-104. |
| MLA | Wu, Tong,et al."Accumulation and phytotoxicity of technical hexabromocyclododecane in maize".JOURNAL OF ENVIRONMENTAL SCIENCES 42.0(2016):97-104. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。