Responses of ramie(Boehmeria nivea L.)to increasing rare earth element(REE)concentrations in a hydroponic system

作     者：Chang Liu Wenshen Liu Hermine Huot Yiming Yang Meina Guo Jean Louis Morel Yetao Tang Rongliang Qiu Chang Liu;Wenshen Liu;Hermine Huot;Yiming Yang;Meina Guo;Jean Louis Morel;Yetao Tang;Rongliang Qiu

作者机构：School of Environmental Science and EngineeringSun Yat-sen UniversityGuangzhou 510275China Laboratoire Sols et EnvironnementINRAE-Universitéde Lorraine54505Vandceuvre-les-NancyFrance Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation TechnologyGuangzhou 510275China Guangdong Provincial Engineering Research Center for Heavy Metal Contaminated Soil RemediationSun Yat-sen UniversityGuangzhou 510275China 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2022年第40卷第5期

页      面：840-846,I0006页

核心收录：

学科分类：07[理学] 09[农学] 0903[农学-农业资源与环境] 0713[理学-生态学] 

基　　金：Project supported by the Key R&D Program of Jiangxi Province(20192ACB70016) the National Natural Science Foundation of China(41771343) the 111 Project(B18060) the Sino-French Cai Yuanpei Programme(38896SC) 

主　　题：Phytoremediation Ramie Rare earth elements Fractionation Molybdenum Phosphorus 

摘      要：A number of studies have focused on the effects of rare earth elements(REEs) on crop plants,while little attention has been paid on how tolerant plant species respond to increasing mixed REE *** this study,ramie(Boehmeria nivea L.) was exposed to a series of REE concentrations prepared with equimolar mixtures of 16 REEs(i.e.0,1.6,8,16,80,160,400,800 μmol/L) in order to explore REE accumulation and fractionation characteristics in ramie and the responses of this plant to mixed *** show that ramie root and shoot biomasses are unaffected under lower REE concentrations(1.6-80 μmol/L),while the growth of ramie and the uptake of nutrients especially Ca and Mn are largely inhibited under higher REE concentrations(160-800 μmol/L).The P and Mo concentrations in the roots increase with the increasing REE concentrations in the solution,suggestive of an involvement of P and Mo in dealing with the high concentrations of REEs in this *** preferential uptake of Ce and heavy REEs(HREEs) and the preferential transport of HREEs within the plant lead to a positive Ce anomaly and a HREE enrichment in ramie *** study suggests that ramie could be a good candidate for the phyto re mediation of heavily REE-contaminated soils(e.g.,REE mine tailings in southern China).Our results also shed light on points of taking into account phytoremediation management strategies of REEcontaminated soils(e.g.,P and Mo fertilization).