Nitrate facilitates cadmium uptake, transport and accumulation in the hyperaccumulator Sedum plumbizincicola
文献类型：期刊论文
| 作者 | Hu, Pengjie1; Yin, Yong-Gen2; Ishikawa, Satoru3; Suzui, Nobuo2; Kawachi, Naoki2; Fujimaki, Shu2; Igura, Masato3; Yuan, Cheng1; Huang, Jiexue1; Li, Zhu1 |
| 刊名 | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
 |
| 出版日期 | 2013-09-01 |
| 卷号 | 20期号:9页码:6306-6316 |
| 关键词 | Ammonium Cadmium Nitrate Positron-emitting tracer imaging system (PETIS) Sedum plumbizincicola Transport Uptake Xylem sap |
| ISSN号 | 0944-1344 |
| 其他题名 | Organochlorine Pesticides in the Atmosphere and Surface Water from the Equatorial Indian Ocean Enantiomeric Signatures, Sources, and Fate.pdf |
| 产权排序 | [Hu, Pengjie; Yuan, Cheng; Huang, Jiexue; Li, Zhu; Wu, Longhua] Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China; [Yin, Yong-Gen; Suzui, Nobuo; Kawachi, Naoki; Fujimaki, Shu] Japan Atom Energy Agcy, Gunma 3701292, Japan; [Ishikawa, Satoru; Igura, Masato; Makino, Tomoyuki] Natl Inst Agroenvironm Sci, Ibaraki 3058604, Japan; [Luo, Yongming] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China; [Christie, Peter] Agrifood & Biosci Inst, Agrienvironm 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 |
| 中文摘要 | The aims of this study are to investigate whether and how the nitrogen form (nitrate (NO3 (-)) versus ammonium (NH4 (+))) influences cadmium (Cd) uptake and translocation and subsequent Cd phytoextraction by the hyperaccumulator species Sedum plumbizincicola. Plants were grown hydroponically with N supplied as either NO3 (-) or NH4 (+). Short-term (36 h) Cd uptake and translocation were determined innovatively and quantitatively using a positron-emitting Cd-107 tracer and positron-emitting tracer imaging system. The results show that the rates of Cd uptake by roots and transport to the shoots in the NO3 (-) treatment were more rapid than in the NH4 (+) treatment. After uptake for 36 h, 5.6 (0.056 mu M) and 29.0 % (0.290 mu M) of total Cd in the solution was non-absorbable in the NO3 (-) and NH4 (+) treatments, respectively. The local velocity of Cd transport was approximately 1.5-fold higher in roots (3.30 cm h(-1)) and 3.7-fold higher in shoots (10.10 cm h(-1)) of NO3 (-)- than NH4 (+)-fed plants. Autoradiographic analysis of Cd-109 reveals that NO3 (-) nutrition enhanced Cd transportation from the main stem to branches and young leaves. Moreover, NO3 (-) treatment increased Cd, Ca and K concentrations but inhibited Fe and P in the xylem sap. In a 21-day hydroponic culture, shoot biomass and Cd concentration were 1.51 and 2.63 times higher in NO3 (-)- than in NH4 (+)-fed plants. We conclude that compared with NH4 (+), NO3 (-) promoted the major steps in the transport route followed by Cd from solution to shoots in S. plumbizincicola, namely its uptake by roots, xylem loading, root-to-shoot translocation in the xylem and uploading to the leaves. S. plumbizincicola prefers NO3 (-) nutrition to NH4 (+) for Cd phytoextraction. |
| 英文摘要 | The aims of this study are to investigate whether and how the nitrogen form (nitrate (NO3 (-)) versus ammonium (NH4 (+))) influences cadmium (Cd) uptake and translocation and subsequent Cd phytoextraction by the hyperaccumulator species Sedum plumbizincicola. Plants were grown hydroponically with N supplied as either NO3 (-) or NH4 (+). Short-term (36 h) Cd uptake and translocation were determined innovatively and quantitatively using a positron-emitting Cd-107 tracer and positron-emitting tracer imaging system. The results show that the rates of Cd uptake by roots and transport to the shoots in the NO3 (-) treatment were more rapid than in the NH4 (+) treatment. After uptake for 36 h, 5.6 (0.056 mu M) and 29.0 % (0.290 mu M) of total Cd in the solution was non-absorbable in the NO3 (-) and NH4 (+) treatments, respectively. The local velocity of Cd transport was approximately 1.5-fold higher in roots (3.30 cm h(-1)) and 3.7-fold higher in shoots (10.10 cm h(-1)) of NO3 (-)- than NH4 (+)-fed plants. Autoradiographic analysis of Cd-109 reveals that NO3 (-) nutrition enhanced Cd transportation from the main stem to branches and young leaves. Moreover, NO3 (-) treatment increased Cd, Ca and K concentrations but inhibited Fe and P in the xylem sap. In a 21-day hydroponic culture, shoot biomass and Cd concentration were 1.51 and 2.63 times higher in NO3 (-)- than in NH4 (+)-fed plants. We conclude that compared with NH4 (+), NO3 (-) promoted the major steps in the transport route followed by Cd from solution to shoots in S. plumbizincicola, namely its uptake by roots, xylem loading, root-to-shoot translocation in the xylem and uploading to the leaves. S. plumbizincicola prefers NO3 (-) nutrition to NH4 (+) for Cd phytoextraction. |
| 学科主题 | Environmental Sciences |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| 关键词[WOS] | TRACER IMAGING-SYSTEM ; THLASPI-CAERULESCENS ; ARABIDOPSIS-HALLERI ; NITROGEN FORM ; NOCCAEA CAERULESCENS ; METAL HOMEOSTASIS ; CD TRANSLOCATION ; ALFREDII HANCE ; ZINC UPTAKE ; XYLEM SAP |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China [40930739, 41201300, 41230858]; Strategic International Cooperative Program, Japanese Science and Technology Agency (JST); Japanese Society for the Promotion of Science [23380155] |
| 原文出处 | http://dx.doi.org/10.1007/s11356-013-1680-3 |
| 语种 | 英语 |
| WOS记录号 | WOS:000322155400040 |
| 公开日期 | 2014-07-08 |
| 源URL | [http://ir.yic.ac.cn/handle/133337/6957]  |
| 专题 | 烟台海岸带研究所_中科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.Japan Atom Energy Agcy, Gunma 3701292, Japan 3.Natl Inst Agroenvironm Sci, Ibaraki 3058604, Japan 4.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China 5.Agrifood & Biosci Inst, Agrienvironm Branch, Belfast BT9 5PX, Antrim, North Ireland |
| 推荐引用方式 GB/T 7714 | Hu, Pengjie,Yin, Yong-Gen,Ishikawa, Satoru,et al. Nitrate facilitates cadmium uptake, transport and accumulation in the hyperaccumulator Sedum plumbizincicola[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2013,20(9):6306-6316. |
| APA | Hu, Pengjie.,Yin, Yong-Gen.,Ishikawa, Satoru.,Suzui, Nobuo.,Kawachi, Naoki.,...&Wu, Longhua.(2013).Nitrate facilitates cadmium uptake, transport and accumulation in the hyperaccumulator Sedum plumbizincicola.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,20(9),6306-6316. |
| MLA | Hu, Pengjie,et al."Nitrate facilitates cadmium uptake, transport and accumulation in the hyperaccumulator Sedum plumbizincicola".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 20.9(2013):6306-6316. |
入库方式： OAI收割
来源：烟台海岸带研究所
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