Journal article
Sulfate metabolites of 4-monochlorobiphenyl in whole poplar plants
Environmental science & technology, Vol.47(1), pp.557-562
01/02/2013
DOI: 10.1021/es303807f
PMCID: PMC3565590
PMID: 23215248
Abstract
4-Monochlorobiphenyl (PCB3) has been proven to be transformed into hydroxylated metabolites of PCB3 (OH-PCB3s) in whole poplar plants in our previous work. However, hydroxylated metabolites of PCBs, including OH-PCB3s, as the substrates of sulfotransferases have not been studied in many organisms including plants in vivo. Poplar (Populus deltoides × nigra, DN34) was used to investigate the further metabolism from OH-PCB3s to PCB3 sulfates because it is a model plant and one that is frequently utilized in phytoremediation. Results showed poplar plants could metabolize PCB3 into PCB3 sulfates during 25 day exposures. Three sulfate metabolites, including 2'-PCB3 sulfate, 3'-PCB3 sulfate, and 4'-PCB3 sulfate, were identified in poplar roots and their concentrations increased in the roots from day 10 to day 25. The major products were 2'-PCB3 sulfate and 4'-PCB3 sulfate. However, the concentrations of PCB3 sulfates were much lower than those of OH-PCB3s in the roots, suggesting the sequential transformation of these hydroxylated PCB3 metabolites into PCB3 sulfates in whole poplars. In addition, 2'-PCB3 sulfate or 4'-PCB3 sulfate was also found in the bottom wood samples indicating some translocation or metabolism in woody tissue. Results suggested that OH-PCB3s were the substrates of sulfotransferases which catalyzed the formation of PCB3 sulfates in the metabolic pathway of PCB3.
Details
- Title: Subtitle
- Sulfate metabolites of 4-monochlorobiphenyl in whole poplar plants
- Creators
- Guangshu Zhai - Department of Civil and Environmental Engineering and IIHR Hydroscience and Engineering, The University of Iowa, Iowa City, Iowa 52242, United States. zhai-guangshu@uiowa.eduHans-Joachim LehmlerJerald L Schnoor
- Resource Type
- Journal article
- Publication Details
- Environmental science & technology, Vol.47(1), pp.557-562
- DOI
- 10.1021/es303807f
- PMID
- 23215248
- PMCID
- PMC3565590
- NLM abbreviation
- Environ Sci Technol
- ISSN
- 1520-5851
- eISSN
- 1520-5851
- Publisher
- United States
- Grant note
- P42 ES013661 / NIEHS NIH HHS P42ES013661 / NIEHS NIH HHS P30 ES005605 / NIEHS NIH HHS
- Language
- English
- Date published
- 01/02/2013
- Academic Unit
- Civil and Environmental Engineering; Occupational and Environmental Health; Iowa Neuroscience Institute; Iowa Superfund Research Program
- Record Identifier
- 9983991988302771
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