IRT1 and ZIP2 were involved in exogenous hydrogen-rich water-reduced cadmium accumulation in Brassica chinensis and Arabidopsis thaliana
文献类型： 外文期刊
作者： Wu, Xue 1 ; Su, Nana 1 ; Yue, Xiaomeng 1 ; Fang, Bo 1 ; Zou, Jianwen 3 ; Chen, Yahua 1 ; Shen, Zhenguo 1 ; Cui, Jin 1 ;
作者机构： 1.Nanjing Agr Univ, Coll Life Sci, Nanjing 210095, Peoples R China
2.Jiangsu Acad Agr Sci, Inst Agr Facil & Equipment, Agr Minist Key Lab Agr Engn Middle & Lower Reache, Nanjing, Peoples R China
3.Nanjing Agr Univ, Coll Resources & Environm Sci, Nanjing, Peoples R China
关键词： Cd; HRW; BcIRT1; BcZIP2; Ion absorption
期刊名称：JOURNAL OF HAZARDOUS MATERIALS （ 影响因子：10.588； 五年影响因子：10.129 ）
ISSN： 0304-3894
年卷期： 2021 年 407 卷
页码：
收录情况： SCI
摘要： The results of Cd (cadmium) concentration, Cd2+ fluorescent staining, NMT (non-invasive micro-test technology) analysis of Cd absorption revealed the remarkably positive role of HRW in reducing Cd uptake by root of pak choi seedlings. BcIRT1 (iron-regulated transporter 1) and BcZIP2 (zinc-regulated transporter protein 2) are the main Cd transporters in pak choi, but their roles in the process of HRW-reduced Cd uptake is still far from being answered. In this study, we specifically verified the function of IRT1 and ZIP2 in HRW-reduced Cd absorption in pak choi and Arabidopsis thaliana. Heterologous and homologous expression in Arabidopsis thaliana displayed that Cd concentrations in wild-type (Col-0) and transgenic A. thaliana of IRT1 and ZIP2 were significantly reduced by HRW, except for irt1- and zip2-mutant. NMT detection showed that HRW not only decreased Cd2+ influx in root of WT and transgenic lines, but also enhanced the competition between Zn and Cd. Taken together, the HRW-induced reduction of Cd accumulation in plants may be result from depressing the expression of BcIRT1 and BcZIP2 and affecting the preference of BcIRT1 and BcZIP2 in ion uptake.
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