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Uptake, accumulation, translocation and transformation of seneciphylline (Sp) and seneciphylline-N-oxide (SpNO) by Camellia sinensis L

文献类型： 外文期刊

作者： Lu, Yuting 1 ; Han, Haolei 2 ; Jiang, Changling 1 ; Liu, Hongxia 1 ; Wang, Ziqi 3 ; Chai, Yunfeng 1 ; Zhang, Xiangchun 1 ; Qiu, Jing 2 ; Chen, Hongping 1 ;

作者机构： 1.Chinese Acad Agr Sci, Tea Res Inst, Hangzhou 310008, Peoples R China

2.Chinese Acad Agr Sci, Inst Qual Stand & Testing Technol Agroprod, Beijing 10081, Peoples R China

3.Zhejiang Univ Technol, Coll Chem Engn, Hangzhou 310014, Peoples R China

4.Minist Agr, Key Lab Tea Qual & Safety & Risk Assessment, Hangzhou 310008, Peoples R China

5.Minist Agr & Rural Affairs, Key Lab Tea Qual & Safety Control, Hangzhou 310008, Peoples R China

6.Chinese Acad Agr Sci, Grad Sch, Beijing 100081, Peoples R China

关键词： Pyrrolizidine alkaloids; Hydroponic; Soil; Subcellular distribution; Tea plants

期刊名称：ENVIRONMENT INTERNATIONAL （ 影响因子：10.3； 五年影响因子：11.1 ）

ISSN： 0160-4120

年卷期： 2024 年 188 卷

页码：

收录情况： SCI

摘要： Pyrrolizidine alkaloids (PAs) and their N-oxide (PANOs), as emerging environmental pollutants and chemical hazards in food, have become the focus of global attention. PAs/PANOs enter crops from soil and reach edible parts, but knowledge about their uptake and transport behavior in crops is currently limited. In this study, we chose tea ( Camellia sinensis L.) as a representative crop and Sp/SpNO as typical PAs/PANOs to analyze their root uptake and transport mechanism. Tea roots efficiently absorbed Sp/SpNO, utilizing both passive and active transmembrane pathways. Sp predominantly concentrated in roots and SpNO efficiently translocated to aboveground parts. The prevalence of SpNO in cell-soluble fractions facilitated its translocation from roots to stems and leaves. In soil experiment, tea plants exhibited weaker capabilities for the uptake and transport of Sp/SpNO compared to hydroponic conditions, likely due to the swift degradation of these compounds in the soil. Moreover, a noteworthy interconversion between Sp and SpNO in tea plants indicated a preference for reducing SpNO to Sp. These findings represent a significant stride in understanding the accumulation and movement mechanisms of Sp/SpNO in tea plants. The insights garnered from this study are pivotal for evaluating the associated risks of PAs/PANOs and formulating effective control strategies.

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