title: Transformation of hydroxylated and methoxylated 2,2',4,4',5-brominated diphenyl ether (BDE-99) in plants.
abstract: 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.
authors.affiliation: Department of Environmental Science, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China. Electronic address: lilypan2717@163.com.
authors.forename: Lili
authors.initials: L
authors.lastname: Pan
authors.affiliation: Department of Environmental Science, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China.
authors.forename: Jianteng
authors.initials: J
authors.lastname: Sun
authors.affiliation: Analysis and Measurement Center, Zhejiang University, Hangzhou 310058, China.
authors.forename: Xiaodan
authors.initials: X
authors.lastname: Wu
authors.affiliation: Analysis and Measurement Center, Zhejiang University, Hangzhou 310058, China.
authors.forename: Zi
authors.initials: Z
authors.lastname: Wei
authors.affiliation: Department of Environmental Science, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China. Electronic address: zlz@zju.edu.cn.
authors.forename: Lizhong
authors.initials: L
authors.lastname: Zhu
mesh_terms: D001711:Biotransformation; D004784:Environmental Monitoring; D055768:Halogenated Diphenyl Ethers / Q000032:analysis / Q000378:metabolism*; D006900:Hydroxylation; D010944:Plants / Q000737:chemistry / Q000378:metabolism*; D012989:Soil Pollutants / Q000032:analysis / Q000378:metabolism*
chemical_list: C477694:2,2',4,4',5-brominated diphenyl ether; D055768:Halogenated Diphenyl Ethers; D012989:Soil Pollutants
keywords: Biotransformation; MeO-PBDEs; OH-PBDEs; Plant