alexa Phase I xenobiotic metabolic systems in plants.
Environmental Sciences

Environmental Sciences

Journal of Petroleum & Environmental Biotechnology

Author(s): Komives T, Gullner G

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Abstract Phytoremediation uses living higher plants for the removal and biochemical decomposition of environmental pollutants. In this paper Phase I metabolic pathways in the biotransformation reactions of organic pollutants in plants are reviewed. These reactions result in the introduction of functional groups in the xenobiotic molecule or the exposure of preexisting functional groups and lead to the formation of more polar, more water-soluble, chemically more reactive and sometimes biologically more active derivatives. Phase I type reactions are most important in the phytoremediation of hydrophobic, chemically stable organic pollutants, such as polycyclic aromatic hydrocarbons and (poly)chlorinated aliphatic and aromatic hydrocarbons. Although Phase I reactions involve a wide range of chemical transformations from hydrolysis to reduction, oxidative processes catalyzed by cytochrome P450 containing monooxygenases are the most important. Transgenic plants with tailored Phase I enzymatic activities may play major roles in the removal of environmentally stable organic pollutants from contaminated fields.
This article was published in Z Naturforsch C and referenced in Journal of Petroleum & Environmental Biotechnology

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