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Stable isotope fractionation during uptake and translocation of cadmium by tolerant Ricinus communis and hyperaccumulator Solanum nigrum as influenced by EDTA
Rongfei Wei;  Qingjun Guo;  Guirui Yu;  Jing Kong;  Siliang Li;  Zhaoliang Song;  Jian Hu;  Liyan Tian;  Xiaokun Han;  Chukwunonso Peter Okoli
2018
发表期刊Environmental Pollution
卷号236页码:634-644
摘要

The isotopic fractionation could contribute to understanding the Cd accumulation mechanisms in plant species. However, there are few of systematical investigations with regards to the Cd isotope fractionation in hyperaccumulator plants. The Cd tolerant Ricinus communis and hyperaccumulator Solanum nigrum were cultivated in nutrient solutions with varying Cd and EDTA concentrations. Cd isotope ratios were determined in the solution, root, stem and leaf. The two investigated plants were systematically enriched in light isotopes relative to their solutions (Delta Cd-114/110(plant-solution)= -0.64 parts per thousand to -0.29 parts per thousand for R. communis and -0.84 parts per thousand to -031 parts per thousand for S. nigrum). Cd isotopes were markedly fractionated among the plant tissues. For both plant species, an enrichment in light Cd isotopes from solution to root was noted, followed by a slight depletion in light Cd isotopes from root to shoot. Noticeably, the chelation process has caused lighter Cd isotope enrichment in the root of R. communis and S. nigrum. Further, the good fits between Delta Cd-114/110(root-plant) and In F-root (or between Delta Cd-114/110(shoot-plant) and In F-shoot) indicate that Cd isotopic signatures can be used to study Cd transportation during the metabolic process of plants. This study suggests that knowledge of the Cd isotope ratios could also provide new tool for identifying the Cd-avoiding crop cultivars.

关键词Cd isotope Fractionation ricinus Communis solanum Nigrum edta
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.gyig.ac.cn/handle/42920512-1/8734
专题环境地球化学国家重点实验室
作者单位1.Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
2.College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
3.Institute of Surface-Earth System Science, Tianjin University, Tianjin, China
4.Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, China
5.Federal University Ndufu-Allike Ikwo, Ebonyi State, Nigeria
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GB/T 7714
Rongfei Wei;Qingjun Guo;Guirui Yu;Jing Kong;Siliang Li;Zhaoliang Song;Jian Hu;Liyan Tian;Xiaokun Han;Chukwunonso Peter Okoli. Stable isotope fractionation during uptake and translocation of cadmium by tolerant Ricinus communis and hyperaccumulator Solanum nigrum as influenced by EDTA[J]. Environmental Pollution,2018,236:634-644.
APA Rongfei Wei;Qingjun Guo;Guirui Yu;Jing Kong;Siliang Li;Zhaoliang Song;Jian Hu;Liyan Tian;Xiaokun Han;Chukwunonso Peter Okoli.(2018).Stable isotope fractionation during uptake and translocation of cadmium by tolerant Ricinus communis and hyperaccumulator Solanum nigrum as influenced by EDTA.Environmental Pollution,236,634-644.
MLA Rongfei Wei;Qingjun Guo;Guirui Yu;Jing Kong;Siliang Li;Zhaoliang Song;Jian Hu;Liyan Tian;Xiaokun Han;Chukwunonso Peter Okoli."Stable isotope fractionation during uptake and translocation of cadmium by tolerant Ricinus communis and hyperaccumulator Solanum nigrum as influenced by EDTA".Environmental Pollution 236(2018):634-644.
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