Comprehensive effects of thiamethoxam from contaminated soil on lettuce growth and metabolism

文献类型： 外文期刊

第一作者： Li, Li

作者： Li, Li;Yin, Shijie;Wang, Fuyun;Pan, Wei;Kang, Shanshan;Chen, Zenglong;Li, Li;Chen, Zenglong

作者机构：

关键词： Lettuce; Thiamethoxam; Growth; Metabolomics; Removal rate

期刊名称：ENVIRONMENTAL POLLUTION （ 影响因子：8.9； 五年影响因子：9.5 ）

ISSN： 0269-7491

年卷期： 2024 年 343 卷

页码：

收录情况： SCI

摘要： The second-generation neonicotinoid thiamethoxam, is prevalent in soils because of its extensive application and persistence. However, the comprehensive effects of thiamethoxam residue in soils on cultivated plants are still poorly understood. This study examined variations of growth state, physiological parameters, antioxidant activity, and metabolites in lettuce after thiamethoxam exposure; the removal effects of different washing procedures were also investigated. The results indicated that thiamethoxam in soils significantly increased the fresh weight, seedling height and chlorophyll content in lettuce, and also altered its lipid, carbohydrate, nucleotide and amino acids composition based on untargeted metabolomics. KEGG pathway analysis uncovered a disruption of lipid pathways in lettuce exposed to both low and high concentrations of thiamethoxam treatments. In addition, the terminal residues of thiamethoxam in lettuce were below the corresponding maximum residue limits stipulated for China. The thiamethoxam removal rates achieved by common washing procedures in lettuce ranged from 26.9% to 42.6%. This study thus promotes the understanding of the potential food safety risk caused by residual thiamethoxam in soils.

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