Growth and membrane permeability of two submersed macrophytes in response to ammonium enrichment
文献类型：期刊论文
| 作者 | Zhong, Aiwen; Cao, Te; Ni, Leyi; Xie, Ping |
| 刊名 | AQUATIC BIOLOGY
 |
| 出版日期 | 2013 |
| 卷号 | 19期号:1页码:55-64 |
| 关键词 | NH4+ stress Membrane permeability Cations Submersed macrophyte |
| ISSN号 | 1864-7790 |
| 通讯作者 | Cao, T (reprint author), Chinese Acad Sci, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, 7 Donghu South Rd, Wuhan 430072, Peoples R China. |
| 中文摘要 | Increased ammonium (NH4+) concentrations are reported to be an important cause of decline in submersed macrophytes in eutrophic lakes. In this study, a subacute experiment was conducted to examine the effects of various NH4+ concentrations on growth and membrane permeability of 2 submersed macrophytes, Myriophyllum spicatum and Ceratophyllum demersum. Apical shoots of the plants were incubated in modified Hoagland solution with 0.25, 0.5, 1, 2, 4, 8, 16, 32, 64 and 128 mg l(-1) NH4+-N for 4 d. The plants were then collected for examination of cell membrane permeability and the solutions were used to determine the concentrations of NH4+, sodium (Na+), potassium (K+), magnesium (Mg2+) and calcium (Ca2+). The results indicate that high NH4+ concentrations had significant adverse effects (e.g. reduced growth and leaf chlorosis) on the macrophytes and increased membrane permeability, leading to net leakage of NH4+ and the cations. Compared to M. spicatum, C. demersum had higher membrane permeability, which might enhance NH4+ transportation across the membrane and thus increase its tolerance to NH4+ stress. Significant increases in the membrane permeability of M. spicatum and C. demersum were observed in the treatments with external NH4+-N concentrations of >= 2 mg l(-1), which fall within the range of NH4+ concentrations in many eutrophic lakes. |
| 英文摘要 | Increased ammonium (NH4+) concentrations are reported to be an important cause of decline in submersed macrophytes in eutrophic lakes. In this study, a subacute experiment was conducted to examine the effects of various NH4+ concentrations on growth and membrane permeability of 2 submersed macrophytes, Myriophyllum spicatum and Ceratophyllum demersum. Apical shoots of the plants were incubated in modified Hoagland solution with 0.25, 0.5, 1, 2, 4, 8, 16, 32, 64 and 128 mg l(-1) NH4+-N for 4 d. The plants were then collected for examination of cell membrane permeability and the solutions were used to determine the concentrations of NH4+, sodium (Na+), potassium (K+), magnesium (Mg2+) and calcium (Ca2+). The results indicate that high NH4+ concentrations had significant adverse effects (e.g. reduced growth and leaf chlorosis) on the macrophytes and increased membrane permeability, leading to net leakage of NH4+ and the cations. Compared to M. spicatum, C. demersum had higher membrane permeability, which might enhance NH4+ transportation across the membrane and thus increase its tolerance to NH4+ stress. Significant increases in the membrane permeability of M. spicatum and C. demersum were observed in the treatments with external NH4+-N concentrations of >= 2 mg l(-1), which fall within the range of NH4+ concentrations in many eutrophic lakes. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Marine & Freshwater Biology |
| 研究领域[WOS] | Marine & Freshwater Biology |
| 关键词[WOS] | AFFINITY POTASSIUM-TRANSPORT ; VALLISNERIA-NATANS ; MYRIOPHYLLUM-SPICATUM ; POTAMOGETON-CRISPUS ; AMBIENT AMMONIUM ; SHALLOW LAKES ; NH4+ TOXICITY ; YANGTZE-RIVER ; HIGHER-PLANTS ; BARLEY ROOTS |
| 收录类别 | SCI |
| 资助信息 | National Science Foundation of China [31270508, 41230853]; National High Technology Research and Development Program of China [2012ZX07105-004] |
| 语种 | 英语 |
| WOS记录号 | WOS:000324199700006 |
| 公开日期 | 2014-01-03 |
| 源URL | [http://ir.ihb.ac.cn/handle/342005/19564]  |
| 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 | Chinese Acad Sci, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhong, Aiwen,Cao, Te,Ni, Leyi,et al. Growth and membrane permeability of two submersed macrophytes in response to ammonium enrichment[J]. AQUATIC BIOLOGY,2013,19(1):55-64. |
| APA | Zhong, Aiwen,Cao, Te,Ni, Leyi,&Xie, Ping.(2013).Growth and membrane permeability of two submersed macrophytes in response to ammonium enrichment.AQUATIC BIOLOGY,19(1),55-64. |
| MLA | Zhong, Aiwen,et al."Growth and membrane permeability of two submersed macrophytes in response to ammonium enrichment".AQUATIC BIOLOGY 19.1(2013):55-64. |
入库方式： OAI收割
来源：水生生物研究所
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