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Effects of ammonium on growth, nitrogen and carbohydrate metabolism of Potamogeton maackianus A. Benn
Li, Huijuan1,2; Cao, Te1; Ni, Leyi1; Ni, L, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China
2007
Source PublicationFUNDAMENTAL AND APPLIED LIMNOLOGY
ISSN1863-9135
Volume170Issue:2Pages:141-148
AbstractGrowth, nitrogen and carbohydrate metabolism in relation to eutrophication were studied for a submerged plant Potamogeton maackianus, a species common in East Asian shallow lakes. The plants were grown in six NH4+-N concentrations (0.05, 0.50, 1.00, 3.50, 5.00 and 10.00 mg/L) for six days. NH4+-N levels in excess of 0.50 mg/L inhibited the plant growth. The relationships between external NH4+-N availability and total nitrogen (TN), protein-N, free amino acid-N (FAA-N) and NH4+-N in plant tissues, respectively, conformed to a logarithmic model suggesting that a feedback inhibition mechanism may exist for ammonium uptake. The response of starch to NH4+-N was fitted with a negative, logarithmic curve. Detailed analysis revealed that the influx NH4+-N had been efficiently incorporated into organic-N and eventually stored as protein at the expense of starch accumulation. These data suggest that this species may be able to tolerate high levels of ammonium when dissolved oxygen is sufficient.; Growth, nitrogen and carbohydrate metabolism in relation to eutrophication were studied for a submerged plant Potamogeton maackianus, a species common in East Asian shallow lakes. The plants were grown in six NH4+-N concentrations (0.05, 0.50, 1.00, 3.50, 5.00 and 10.00 mg/L) for six days. NH4+-N levels in excess of 0.50 mg/L inhibited the plant growth. The relationships between external NH4+-N availability and total nitrogen (TN), protein-N, free amino acid-N (FAA-N) and NH4+-N in plant tissues, respectively, conformed to a logarithmic model suggesting that a feedback inhibition mechanism may exist for ammonium uptake. The response of starch to NH4+-N was fitted with a negative, logarithmic curve. Detailed analysis revealed that the influx NH4+-N had been efficiently incorporated into organic-N and eventually stored as protein at the expense of starch accumulation. These data suggest that this species may be able to tolerate high levels of ammonium when dissolved oxygen is sufficient.
SubtypeArticle
KeywordEutrophication Ammonium Total Nitrogen (Tn) Free Amino Acid (Faa) Protein Starch Potamogeton Maackianus
Department[Li, Huijuan; Cao, Te; Ni, Leyi] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China; [Li, Huijuan] Chinese Acad Sci, Inst Urban Environm, Xiamen 361003, Peoples R China
Subject AreaLimnology ; Marine & Freshwater Biology
DOI10.1127/1863-9135/2007/0170-0141
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Indexed BySCI
Language英语
WOS Research AreaMarine & Freshwater Biology
WOS SubjectLimnology ; Marine & Freshwater Biology
WOS IDWOS:000251958100005
WOS KeywordSTRATIOTES-ALOIDES L ; WATER-QUALITY ; DECLINE ; LIGHT ; ACCUMULATION ; RESTORATION ; MACROPHYTES ; RESPONSES ; TOXICITY ; PLANTS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/8316
Collection期刊论文
Corresponding AuthorNi, L, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Inst Urban Environm, Xiamen 361003, Peoples R China
Recommended Citation
GB/T 7714
Li, Huijuan,Cao, Te,Ni, Leyi,et al. Effects of ammonium on growth, nitrogen and carbohydrate metabolism of Potamogeton maackianus A. Benn[J]. FUNDAMENTAL AND APPLIED LIMNOLOGY,2007,170(2):141-148.
APA Li, Huijuan,Cao, Te,Ni, Leyi,&Ni, L, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China.(2007).Effects of ammonium on growth, nitrogen and carbohydrate metabolism of Potamogeton maackianus A. Benn.FUNDAMENTAL AND APPLIED LIMNOLOGY,170(2),141-148.
MLA Li, Huijuan,et al."Effects of ammonium on growth, nitrogen and carbohydrate metabolism of Potamogeton maackianus A. Benn".FUNDAMENTAL AND APPLIED LIMNOLOGY 170.2(2007):141-148.
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