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	Fractionation of Stable Cadmium Isotopes in the Cadmium Tolerant Ricinus communis and Hyperaccumulator Solanum nigrum
	Wei R. F.; Guo, Q. J.; Wen, H. J.; Liu, C. Q.; Yang, J. X.; Peters, M.; Hu, J.; Zhu, G. X.; Zhang, H. Z.; Tian, L. Y.
	2016
关键词	higher-plants precise determination primary productivity cd-hyperaccumulator river sediments zinc isotopes lead isotopes alpine plants accumulation soil
英文摘要	Cadmium (Cd) isotopes provide new insights into Cd uptake, transport and storage mechanisms in plants. Therefore, the present study adopted the Cd-tolerant Ricinus communis and Cd-hyperaccumulator Solanum nigrum, which were cultured under controlled conditions in a nutrient solution with variable Cd supply, to test the isotopic fractionation of Cd during plant uptake. The Cd isotope compositions of nutrient solutions and organs of the plants were measured by multiple collector inductively coupled plasma mass spectrometry (MC-ICPMS). The mass balance of Cd isotope yields isotope fractionations between plant and Cd source (delta Cd-114/110(organs-solution)) of -0.70% to -0.22% in Ricinus communis and -0.51% to -0.33% in Solanum nigrum. Moreover, Cd isotope fractionation during Cd transport from stem to leaf differs between the Cd-tolerant and -hyperaccumulator species. Based on these results, the processes (diffusion, adsorption, uptake or complexation), which may induce Cd isotope fractionation in plants, have been discussed. Overall, the present study indicates potential applications of Cd isotopes for investigating plant physiology.
出处	Scientific Reports
卷	6
语种	英语
ISSN号	2045-2322
DOI标识	10.1038/srep24309
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/42810]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Wei R. F.,Guo, Q. J.,Wen, H. J.,et al. Fractionation of Stable Cadmium Isotopes in the Cadmium Tolerant Ricinus communis and Hyperaccumulator Solanum nigrum. 2016.

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