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Advances in the Agro-Environment Migration of Organic Chemical Pollutants and Their Biotransformation in Crops
Summary
This review examined the migration and biotransformation of organic chemical pollutants across agricultural environments including soil, water, and crops, covering how agrochemicals, pharmaceuticals, and industrial chemicals enter food chains. The authors synthesize mechanisms of pollutant uptake by crops and identify key research gaps for protecting food safety.
Global production, consumption and emission of various chemicals continue to rise, despite growing evidence of their harmful effects on environmental quality, food safety and human health. Agronomy, a nature-dependent industry, is considered to be extremely sensitive to chemical pollution. Hence, it is of great importance for food safety and human health to study the migration and biotransformation of chemical pollutants among agricultural elements, such as soil, water and crops. Thus, this review focused on typical organic pollutants (TOPs) in the agro-environment, such as pesticides, antibiotics and persistent organic pollutants (POPs), firstly describing their sources and the current state. Then, we further elucidated the mechanism and influence factors of the TOP-based uptake, translocation and biotransformation of TOPs in crops, including the apoplastic and symplastic pathway, enzyme-assisted nontarget resistance and the physicochemical properties of different TOPs. In addition, future insight into the identification of detoxified genes and lower-toxic metabolism of TOPs was presented in this review, which provides valuable information for breeding agro-products with lower chemical contaminants. In a nutshell, our review discussed comprehensive research progress on TOPs’ fates and offered theoretical guidance for pollution control and ecological risk assessment in agroecosystems.
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