Accumulation and fractionation of rare earth elements (REEs) in the naturally grown Phytolacca americana L. in southern China
2018
Yuan, Ming | Liu, Chang | Liu, Wen-Shen | Guo, Mei-Na | Morel, Jean-Louis | Huot, Hermine | Yu, Hong-Jie | Tang, Ye-Tao | Qiu, Rong-Liang | Sch Environm Sci & Engn ; Sun Yat-sen University [Guangzhou] (SYSU) | Laboratoire Sols et Environnement (LSE) ; Institut National de la Recherche Agronomique (INRA)-Université de Lorraine (UL) | Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology (GPKLEPCRT) | National Natural Science Foundation of China (NSFC) Grant No. 41225004, No. 41371315 ; Science and Technology Planning Project of Guangdong Province Grant No. 2016A020221013 ; Fundamental Research Funds for the Central Universities Grant No. 15lgjc36 and Science and Technology Transfer Program of SYSU
The widespread use of rare earth elements (REEs) has resulted in problems for soil and human health. Phytolacca americana L. is a herbaceous plant widely distributed in Dingnan county of Jiangxi province, China, which is a REE mining region (ion absorption rare earth mine) and the soil has high levels of REEs.An investigation of REE content of P. americana growing naturally in Dingnan county was conducted. REE concentrations in the roots, stems, and leaves of P. americana and in their rhizospheric soils were determined. Results showed that plant REEs concentrations varied among the sampling sites and can reach 1040 mg/kg in the leaves. Plant REEs concentrations decreased in the order of leaf > root > stem and all tissues were characterized by a light REE enrichment and a heavy REE depletion. However, P. americana exhibited preferential accumulation of light REEs during the absorption process (from soil to root) and preferential accumulation of heavy REEs during the translocation process (from stem to leaf).The ability of P. americana to accumulate high REEs in the shoot makes it a potential candidate for understanding the absorption mechanisms of REEs and for the phytoremediation of REEs contaminated soil.
Mostrar más [+] Menos [-]Palabras clave de AGROVOC
Información bibliográfica
Este registro bibliográfico ha sido proporcionado por Institut national de la recherche agronomique