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Expression in A. thaliana and cellular localization reveal involvement of BjNRAMP1 in cadmium uptake

文献类型： 外文期刊

作者： Li, Ting 1 ; Li, Yicun 1 ; Wang, Jiaqi 1 ; Peng, Jiashi 1 ; Liu, Lili 1 ; Deng, Lichao 2 ; Zhang, Dawei 1 ; Yan, Mingli 2 ;

作者机构： 1.Hunan Univ Sci & Technol, Sch Life & Hlth Sci, Hunan Key Lab Econ Crops Genet Improvement & Integ, Xiangtan, Peoples R China

2.Hunan Acad Agr Sci, Crop Res Inst, Hunan Res Ctr Heterosis Utilizat Rapeseed, Changsha, Peoples R China

3.Ningyuan First Middle Sch, Yongzhou, Peoples R China

关键词： Brassica juncea; cadmium; cellular localization; manganese; uptake

期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：5.6； 五年影响因子：6.8 ）

ISSN： 1664-462X

年卷期： 2023 年 14 卷

页码：

收录情况： SCI

摘要： Although Brassica juncea has demonstrated potential as a hyperaccumulator crop, it was not entirely clear how cadmium (Cd) accumulates in plants. Here, we found that BjNRAMP1 (Natural Resistance-Associated Macrophage Protein 1) plays a crucial role in the accumulation of Cd and manganese (Mn) through its expression in yeast and Arabidopsis thaliana. The high concentration of Cd exposure could induce the expression of BjNRAMP1. The ectopic expression of BjNRAMP1 in yeast led to higher accumulation of Cd and Mn compared to the vector control. BjNARAMP1 was localized to the plasma membrane and expressed in the vascular system of roots, leaves, and flowers. The overexpression of BjNRAMP1 in A. thaliana resulted in an increased accumulation of Cd in both roots and shoots, which inhibited the normal growth of transgenic lines. Moreover, Mn uptake in roots was activated by the increase in Cd stress. Together, our results indicated that BjNRAMP1 significantly contributes to the uptake of Mn and Cd in B. juncea.

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