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

第一作者： Lu, Yuting

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

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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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