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In situ mass spectrometry imaging reveals pesticide residues and key metabolic pathways throughout the entire cowpea growth process

文献类型： 外文期刊

作者： Jiang, Shufan 1 ; Lin, Jingling 1 ; Zhang, Rui 1 ; Wu, Qiong 1 ; Li, Hongxing 1 ; Zhang, Qun 1 ; Wang, Mingyue 1 ; Dai, Longjun 7 ; Xie, Defang 1 ; Zhang, Yue 1 ; Zhang, Xinzhong 5 ; Han, Bingjun 1 ;

作者机构： 1.Chinese Acad Trop Agr Sci, Anal & Test Ctr, Haikou 571101, Hainan, Peoples R China

2.Minist Agr & Rural Affairs, Key Lab Qual & Safety Control Subtrop Fruit & Vege, Haikou 571101, Hainan, Peoples R China

3.Hainan Prov Key Lab Qual & Safety Trop Fruits & Ve, Haikou 571101, Hainan, Peoples R China

4.Key Lab Nutr Qual & Hlth Benefits Trop Agr Prod Ha, Haikou 571101, Hainan, Peoples R China

5.Chinese Acad Agr Sci, Tea Res Inst, Hangzhou 310008, Peoples R China

6.Tianjin Agr Univ, Coll Hort & Landscape, Tianjin 300392, Peoples R China

7.Chinese Acad Trop Agr Sci, Rubber Res Inst, Haikou 571101, Hainan, Peoples R China

关键词： Cowpea; Pesticide residue; In situ mass spectrometry imaging; Metabolism; Growth process

期刊名称：JOURNAL OF HAZARDOUS MATERIALS （ 影响因子：12.2； 五年影响因子：11.9 ）

ISSN： 0304-3894

年卷期： 2024 年 472 卷

页码：

收录情况： SCI

摘要： Cowpea plants, renowned for their high edibility, pose a significant risk of pesticide residue contamination. Elucidating the behavior of pesticide residues and their key metabolic pathways is critical for ensuring cowpea safety and human health. This study investigated the migration of pesticide residues and their key metabolic pathways in pods throughout the growth process of cowpea plants via in situ mass spectrometry. To this end, four pesticides--including systemic (thiram), and nonsystemic (fluopyram, pyriproxyfen, and cyromazine) pesticides--were selected. The results indicate the direct upward and downward transmission of pesticides in cowpea stems and pods. Systemic pesticides gradually migrate to the core of cowpea plants, whereas nonsystemic pesticides remain on the surface of cowpea peels. The migration rate is influenced by the cowpea maturity, logarithmic octanol-water partition coefficient (log Kow) value, and molecular weight of the pesticide. Further, 20 types of key metabolites related to glycolysis, tricarboxylic acid cycle, and flavonoid synthesis were found in cowpea pods after pesticide treatment. These findings afford insights into improving cowpea quality and ensuring the safe use of pesticides.

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