Uptake, Translocation, and Biotransformation of Neonicotinoid Imidaclothiz in Hydroponic Vegetables: Implications for Potential Intake Risks
文献类型： 外文期刊
作者： Tao, Yan 1 ; Jia, Chunhong 1 ; Jing, Junjie 1 ; Zhao, Mingyu 3 ; Yu, Pingzhong 1 ; He, Min 1 ; Chen, Li 1 ; Zhao, Ercheng 1 ;
作者机构： 1.Beijing Acad Agr & Forestry Sci, Inst Plant & Environm Protect, Beijing 100097, Peoples R China
2.Beijing Key Lab Environm Friendly Management Dis, Beijing 100081, Peoples R China
3.Jiangxi Agr Univ, Coll Land Resources & Environm, Nanchang 330000, Jiangxi, Peoples R China
关键词： imidaclothiz; neonicotinoid; uptake; metabolism; Q TOF-MS
期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：4.192； 五年影响因子：4.289 ）
ISSN： 0021-8561
年卷期： 2021 年 69 卷 14 期
页码：
收录情况： SCI
摘要： Imidaclothiz is a novel and systemic neonicotinoid pesticide with excellent insecticidal efficacy. However, knowledge of its uptake, translocation, and biotransformation within plants is still largely unknown, restricting work on its accurate and comprehensive risk assessment. Here, we systematically investigated the behavior of imidaclothiz in three plant-water systems via hydroponic experiments. The results showed that imidaclothiz was readily taken up by plant roots and translocated upward, resulting in relative enrichment in leaves. The recoveries of imidaclothiz in plant-water systems decreased with increasing exposure time, and approximately 31.8-45.6% mass loss was measured at the end of exposure. Ultimately, imidaclothiz yielded five products in celery leaves, three products in lettuce leaves, and two products in radish leaves. Multiple metabolic reactions including hydroxylation, hydrolysis of nitrate ester, and methylation occurred within plants. This is the first report on the fate of imidaclothiz within plants and suggests increasing concerns about the risk assessment of imidaclothiz.
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