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Uptake, translocation and subcellular distribution of pesticides in Chinese cabbage (Brassica rapa var. chinensis)

文献类型： 外文期刊

作者： Wang, Wenfeng 1 ; Wan, Qun 1 ; Li, Yixin 1 ; Xu, Wenjun 1 ; Yu, Xiangyang 1 ;

作者机构： 1.Minist Sci & Technol, Jiangsu Key Lab Food Qual & Safety, State Key Lab Cultivat Base, 50 Zhongling St, Nanjing 210014, Jiangsu, Peoples R China

2.Jiangsu Acad Agr Sci, Inst Food Qual & Safety, 50 Zhongling St, Nanjing 210014, Jiangsu, Peoples R China

关键词： Pesticides; Plant uptake; Transfer; Subcellular distribution; Chinese cabbage

期刊名称：ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY （ 影响因子：6.291； 五年影响因子：6.393 ）

ISSN： 0147-6513

年卷期： 2019 年 183 卷

页码：

收录情况： SCI

摘要： The extensive application of pesticides in agricultural activities has raised increasing concerns on crop contamination by pesticide residues. Vegetables seem more susceptible to pesticide contamination given the high intensive application of pesticides during their entire growth, while information about transfer and cell diffusion characteristics of pesticides in vegetables is currently insufficient. Here, we investigated the uptake, translocation and subcellular distribution behaviors of four commonly used pesticides in Chinese cabbage (Brassica rapa var. chinensis) under laboratory hydroponic conditions. Root uptake of pesticides followed the order of > avermectin > thiamethoxam > spirotetramat. Thiamethoxam was more readily to be translocated from vegetable root to shoot, while spirotetramat, fenbuconazole and avermectin preferentially accumulated in vegetable root. Cell soluble components were the dominant storage compartment for thiamethoxam. The majority of spirotetramat, fenbuconazole and avermectin were partitioned into the cell walls. Hopefully, results of this study would extend the current knowledge of pesticide bioconcentration behavior in food-crops and assist in properly evaluating the threats of pesticide residues to human health via food chain.

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