YIC-IR  > 中科院海岸带环境过程与生态修复重点实验室
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
2013-10-15
Source PublicationJOURNAL OF HAZARDOUS MATERIALS
ISSN0304-3894
Volume261Pages:332-341
Contribution Rank[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
AbstractNon-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.
Corresponding AuthorWu, 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
KeywordMetal Toxicity Interactions Hyperaccumulation Translocation Mu-sxrf
Subject AreaEngineering, Environmental ; Engineering, Civil ; Environmental Sciences
Funding OrganizationNational Natural Science Foundation of China [40930739, 41271326]; National High Technology Research and Development (863) Program of China [2012AA06A204]
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Indexed BySCI
WOS KeywordTHLASPI-CAERULESCENS ; SUBCELLULAR-DISTRIBUTION ; PHYTOLACCA-AMERICANA ; METAL ACCUMULATION ; CHEMICAL FORM ; PLANTS ; ZINC ; ROOT ; CD ; PHYTOREMEDIATION
SubtypeArticle
Language英语
Funding Project中国科学院海岸带环境过程与生态修复重点实验室
WOS Research AreaEngineering ; Environmental Sciences & Ecology
WOS IDWOS:000328177300039
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Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/6942
Collection中科院海岸带环境过程与生态修复重点实验室
Affiliation1.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
Recommended Citation
GB/T 7714
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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