Transformation of hydroxylated and methoxylated 2,2′,4,4′,5-brominated diphenyl ether (BDE-99) in plants

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• 作者：Lili Pan¹ ; ² ; ^{lilypan2717@163.com} ; Jianteng Sun¹ ; ² ; Xiaodan Wu³ ; Zi Wei³ ; Lizhong Zhu¹ ; ² ; ^{zlz@zju.edu.cn}
• 关键词：OH-PBDEs ; MeO-PBDEs ; Biotransformation ; Plant
• 刊名：Journal of Environmental Sciences
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：49
• 期：Complete
• 页码：197-202
• 全文大小：487 K
• 卷排序：49

文摘

The occurrence and fate of hydroxylated polybrominated diphenyl ethers (OH-PBDEs) and methoxylated polybrominated diphenyl ethers (MeO-PBDEs) have received significant attention. However, there is limited information on the metabolism relationship between OH-pentaBDEs and MeO-pentaBDEs that were frequently detected with relatively high concentrations in the environment. In this study, the biotransformation between OH-BDE-99 and MeO-BDE-99 was investigated in rice, wheat, and soybean plants. All the three plants can metabolize OH-BDE-99 to corresponding homologous methoxylated metabolites, while the transformation from MeO-BDE-99 to OH-BDE-99 could only be found in soybean. The conversion of parent compounds was the highest in soybean, followed by wheat and rice. Transformation products were found mainly in the roots, with few metabolites being translocated to the shoots and solution after exposure. The results of this study provide valuable information for a better understanding of the accumulation and transformation of OH-PBDEs and MeO-PBDEs in different plants.