Copper changes the yield and cadmium/zinc accumulation and cellular distribution in the cadmium/zinc hyperaccumulator Sedum plumbizincicola
Li, Zhu1,2; Wu, Longhua1; Hu, Pengjie1; Luo, Yongming1,3; Christie, Peter4
发表期刊JOURNAL OF HAZARDOUS MATERIALS
ISSN0304-3894
2013-10-15
卷号261页码:332-341
关键词Metal Toxicity Interactions Hyperaccumulation Translocation Mu-sxrf
产权排序[Li, Zhu; Wu, Longhua; Hu, Pengjie; Luo, Yongming] Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China; [Li, Zhu] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Luo, Yongming] Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China; [Christie, Peter] Agri Food & Biosci Inst, Agri Environm Branch, Belfast BT9 5PX, Antrim, North Ireland
通讯作者Wu, LH (reprint author), Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China. lhwu@issas.ac.cn
英文摘要Non-accumulated metals in mixed metal contaminated soils may affect hyperaccumulator growth and metal accumulation and thus remediation efficiency. Two hydroponics experiments were conducted to investigate the effects of copper (Cu) on cadmium (Cd) and zinc (Zn) accumulation by the Cd/Zn hyperaccumulator Sedum plumbizincicola, Cu toxicity and plant detoxification using chemical sequential extraction of metals, sub-cellular separation, micro synchrotron radiation based X-ray fluorescence, and transmission electron microscopy. Compared with the control (0.31 mu M Cu), 5-50 mu M Cu had no significant effect on Cd/Zn accumulation, but Cu at 200 mu M induced root cell plasmolysis and disordered chloroplast structure. The plants held Cu in the roots and cell walls and complexed Cu in insoluble forms as their main detoxification mechanisms. Exposure to 200 mu M Cu for 4 days inhibited plant Cd uptake and translocation but did not affect Zn concentrations in roots and stems. Moreover, unloading of Cd and Zn from stem to leaf was restrained compared to control plants, perhaps due to Cu accumulation in leaf veins. Copper may thus interfere with root Cd uptake and restrain Cd/Zn unloading to the leaves. Further investigation of how Cu affects plant metal uptake may help elucidate the Cd/Zn hyper-accumulating mechanisms of S. plumbizincicola. (C) 2013 Elsevier BM. All rights reserved.; Non-accumulated metals in mixed metal contaminated soils may affect hyperaccumulator growth and metal accumulation and thus remediation efficiency. Two hydroponics experiments were conducted to investigate the effects of copper (Cu) on cadmium (Cd) and zinc (Zn) accumulation by the Cd/Zn hyperaccumulator Sedum plumbizincicola, Cu toxicity and plant detoxification using chemical sequential extraction of metals, sub-cellular separation, micro synchrotron radiation based X-ray fluorescence, and transmission electron microscopy. Compared with the control (0.31 mu M Cu), 5-50 mu M Cu had no significant effect on Cd/Zn accumulation, but Cu at 200 mu M induced root cell plasmolysis and disordered chloroplast structure. The plants held Cu in the roots and cell walls and complexed Cu in insoluble forms as their main detoxification mechanisms. Exposure to 200 mu M Cu for 4 days inhibited plant Cd uptake and translocation but did not affect Zn concentrations in roots and stems. Moreover, unloading of Cd and Zn from stem to leaf was restrained compared to control plants, perhaps due to Cu accumulation in leaf veins. Copper may thus interfere with root Cd uptake and restrain Cd/Zn unloading to the leaves. Further investigation of how Cu affects plant metal uptake may help elucidate the Cd/Zn hyper-accumulating mechanisms of S. plumbizincicola. (C) 2013 Elsevier BM. All rights reserved.
文章类型Article
资助机构National Natural Science Foundation of China [40930739, 41271326]; National High Technology Research and Development (863) Program of China [2012AA06A204]
收录类别SCI
语种英语
关键词[WOS]THLASPI-CAERULESCENS ; SUBCELLULAR-DISTRIBUTION ; PHYTOLACCA-AMERICANA ; METAL ACCUMULATION ; CHEMICAL FORM ; PLANTS ; ZINC ; ROOT ; CD ; PHYTOREMEDIATION
研究领域[WOS]Engineering ; Environmental Sciences & Ecology
WOS记录号WOS:000328177300039
引用统计
被引频次:29[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.yic.ac.cn/handle/133337/6942
专题中国科学院海岸带环境过程与生态修复重点实验室
作者单位1.Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China
4.Agri Food & Biosci Inst, Agri Environm Branch, Belfast BT9 5PX, Antrim, North Ireland
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Li, Zhu,Wu, Longhua,Hu, Pengjie,et al. Copper changes the yield and cadmium/zinc accumulation and cellular distribution in the cadmium/zinc hyperaccumulator Sedum plumbizincicola[J]. JOURNAL OF HAZARDOUS MATERIALS,2013,261:332-341.
APA Li, Zhu,Wu, Longhua,Hu, Pengjie,Luo, Yongming,&Christie, Peter.(2013).Copper changes the yield and cadmium/zinc accumulation and cellular distribution in the cadmium/zinc hyperaccumulator Sedum plumbizincicola.JOURNAL OF HAZARDOUS MATERIALS,261,332-341.
MLA Li, Zhu,et al."Copper changes the yield and cadmium/zinc accumulation and cellular distribution in the cadmium/zinc hyperaccumulator Sedum plumbizincicola".JOURNAL OF HAZARDOUS MATERIALS 261(2013):332-341.
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