Light-dependent phosphate uptake of a submersed macrophyte Myriophyllum spicatum L.
文献类型：期刊论文
| 作者 | Zhang, Meng1,2; Cao, Te1; Ni, Leyi1; Xie, Ping1; Zhu, Guorong1; Zhong, Aiwen1; Xu, Jun1; Fu, Hui1 |
| 刊名 | AQUATIC BOTANY
 |
| 出版日期 | 2011-05-01 |
| 卷号 | 94期号:4页码:151-157 |
| 关键词 | Submersed macrophyte Myriophyllum spicatum Phosphate absorption Phosphate adsorption |
| ISSN号 | 0304-3770 |
| 通讯作者 | Cao, T, Chinese Acad Sci, Inst Hydrobiol, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol, 7th Donghu S Rd, Wuhan 430072, Hubei, Peoples R China ; caote@ihb.ac.cn ; nily@ihb.ac.cn |
| 中文摘要 | The uptake kinetics of phosphate (Pi) by Myriophyllum spicatum was determined from adsorption and absorption under light and dark conditions. Pi uptake was light dependent and showed saturation following the Michaelis-Menten relation (in light: V = 16.91 x [Pi](1.335 + [Pi]), R-2 = 0.90, p < 0.001; in the dark: V = 5.13 x [Pi](0.351 + [Pi]). R-2 = 0.77, p < 0.001). Around 77% of the loss of Pi in the water column was absorbed into the tissue of M. spicatum, and only 23% was adsorbed on the surface of the plant shoots. Our study shows that M. spicatum shoots have a much higher affinity (in light: 3.9 mu mol g(-1) dw h(-1) mu M-1; in the dark: 3.7 mu mol g(-1) dw h(-1) mu M-1) and V-max (maximum uptake rate, shoot light) for Pi uptake than many other aquatic macrophytes (in light: 0.002-0.23 mu mol g(-1) dw h(-1) mu M-1; in the dark: 0.002-0.19 mu mol g(-1) dw h(-1) mu M-1), which may provide a competitive advantage over other macrophytes across a wide range of Pi concentrations. (C) 2011 Elsevier B.V. All rights reserved. |
| 英文摘要 | The uptake kinetics of phosphate (Pi) by Myriophyllum spicatum was determined from adsorption and absorption under light and dark conditions. Pi uptake was light dependent and showed saturation following the Michaelis-Menten relation (in light: V = 16.91 x [Pi](1.335 + [Pi]), R(2) = 0.90, p < 0.001; in the dark: V = 5.13 x [Pi](0.351 + [Pi]). R(2) = 0.77, p < 0.001). Around 77% of the loss of Pi in the water column was absorbed into the tissue of M. spicatum, and only 23% was adsorbed on the surface of the plant shoots. Our study shows that M. spicatum shoots have a much higher affinity (in light: 3.9 mu mol g(-1) dw h(-1) mu M(-1); in the dark: 3.7 mu mol g(-1) dw h(-1) mu M(-1)) and V(max) (maximum uptake rate, shoot light) for Pi uptake than many other aquatic macrophytes (in light: 0.002-0.23 mu mol g(-1) dw h(-1) mu M(-1); in the dark: 0.002-0.19 mu mol g(-1) dw h(-1) mu M(-1)), which may provide a competitive advantage over other macrophytes across a wide range of Pi concentrations. (C) 2011 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 学科主题 | Plant Sciences; Marine & Freshwater Biology |
| 类目[WOS] | Plant Sciences ; Marine & Freshwater Biology |
| 研究领域[WOS] | Plant Sciences ; Marine & Freshwater Biology |
| 关键词[WOS] | SEAGRASS THALASSIA-TESTUDINUM ; EELGRASS ZOSTERA-MARINA ; EURASIAN WATERMILFOIL ; HYDRILLA-VERTICILLATA ; UPTAKE KINETICS ; YANGTZE-RIVER ; PHOSPHORUS ; ROOTS ; NITROGEN ; LEAVES |
| 收录类别 | SCI |
| 资助信息 | National High Technology Research and Development Program of China [2008ZX07106-2, 2008ZX07101-013, 2008ZX07526-008] |
| 语种 | 英语 |
| WOS记录号 | WOS:000290502100001 |
| 公开日期 | 2011-06-29 |
| 源URL | [http://ir.ihb.ac.cn/handle/342005/15582]  |
| 专题 | 水生生物研究所_淡水生态学研究中心_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Hydrobiol, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China 2.Jiangxi Acad Environm Sci, Nanchang 330029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Meng,Cao, Te,Ni, Leyi,et al. Light-dependent phosphate uptake of a submersed macrophyte Myriophyllum spicatum L.[J]. AQUATIC BOTANY,2011,94(4):151-157. |
| APA | Zhang, Meng.,Cao, Te.,Ni, Leyi.,Xie, Ping.,Zhu, Guorong.,...&Fu, Hui.(2011).Light-dependent phosphate uptake of a submersed macrophyte Myriophyllum spicatum L..AQUATIC BOTANY,94(4),151-157. |
| MLA | Zhang, Meng,et al."Light-dependent phosphate uptake of a submersed macrophyte Myriophyllum spicatum L.".AQUATIC BOTANY 94.4(2011):151-157. |
入库方式： OAI收割
来源：水生生物研究所
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