当前位置: X-MOL 学术Environ. Pollut. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Comprehensive effects of thiamethoxam from contaminated soil on lettuce growth and metabolism
Environmental Pollution ( IF 7.6 ) Pub Date : 2023-12-21 , DOI: 10.1016/j.envpol.2023.123186
Li Li 1 , Shijie Yin 1 , Shanshan Kang 2 , Zenglong Chen 2 , Fuyun Wang 1 , Wei Pan 1
Affiliation  

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.

中文翻译:


污染土壤噻虫嗪对生菜生长和代谢的综合影响



第二代新烟碱类噻虫嗪因其广泛的应用和持久性而在土壤中普遍存在。然而,土壤中噻虫嗪残留对栽培植物的综合影响仍知之甚少。本研究考察了噻虫嗪暴露后生菜的生长状态、生理参数、抗氧化活性和代谢物的变化;还研究了不同洗涤程序的去除效果。结果表明,土壤中的噻虫嗪显着增加了生菜的鲜重、苗高和叶绿素含量,并且基于非靶向代谢组学还改变了其脂质、碳水化合物、核苷酸和氨基酸组成。 KEGG 通路分析揭示了暴露于低浓度和高浓度噻虫嗪处理的生菜中脂质通路的破坏。此外,生菜中噻虫嗪的末端残留量均低于我国规定的相应最高残留限量。通过普通的生菜清洗程序,噻虫嗪的去除率在 26.9% 至 42.6% 之间。因此,这项研究促进了对土壤中残留噻虫嗪造成的潜在食品安全风险的了解。
更新日期:2023-12-21
down
wechat
bug