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Growth and membrane permeability of two submersed macrophytes in response to ammonium enrichment
Zhong, Aiwen; Cao, Te; Ni, Leyi; Xie, Ping; 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.
2013
Source PublicationAQUATIC BIOLOGY
ISSN1864-7790
Volume19Issue:1Pages:55-64
AbstractIncreased 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.; 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.
SubtypeArticle
KeywordNh4++ Stress Membrane Permeability Cations Submersed Macrophyte
Department[Zhong, Aiwen; Cao, Te; Ni, Leyi; Xie, Ping] Chinese Acad Sci, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China
DOI10.3354/ab00514
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Funding OrganizationNational Science Foundation of China [31270508, 41230853]; National High Technology Research and Development Program of China [2012ZX07105-004] ; National Science Foundation of China [31270508, 41230853]; National High Technology Research and Development Program of China [2012ZX07105-004] ; National Science Foundation of China [31270508, 41230853]; National High Technology Research and Development Program of China [2012ZX07105-004] ; National Science Foundation of China [31270508, 41230853]; National High Technology Research and Development Program of China [2012ZX07105-004]
Indexed BySCI
Language英语
WOS Research AreaMarine & Freshwater Biology
WOS SubjectMarine & Freshwater Biology
WOS IDWOS:000324199700006
WOS KeywordAFFINITY POTASSIUM-TRANSPORT ; VALLISNERIA-NATANS ; MYRIOPHYLLUM-SPICATUM ; POTAMOGETON-CRISPUS ; AMBIENT AMMONIUM ; SHALLOW LAKES ; NH4+ TOXICITY ; YANGTZE-RIVER ; HIGHER-PLANTS ; BARLEY ROOTS
Funding OrganizationNational Science Foundation of China [31270508, 41230853]; National High Technology Research and Development Program of China [2012ZX07105-004] ; National Science Foundation of China [31270508, 41230853]; National High Technology Research and Development Program of China [2012ZX07105-004] ; National Science Foundation of China [31270508, 41230853]; National High Technology Research and Development Program of China [2012ZX07105-004] ; National Science Foundation of China [31270508, 41230853]; National High Technology Research and Development Program of China [2012ZX07105-004]
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/19564
Collection淡水生态学研究中心_期刊论文
Corresponding AuthorCao, 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.
AffiliationChinese Acad Sci, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China
Recommended Citation
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,&Cao, T .(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.
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