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Carbon and nitrogen metabolism of an eutrophication tolerative macrophyte, Potamogeton crispus, under NH4+ stress and low light availability
Cao, Te; Xie, Ping; Ni, Leyi; Zhang, Meng; Xu, Jun; Ni, LY, Chinese Acad Sci, Inst Hydrobiol, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
2009-04-01
Source PublicationENVIRONMENTAL AND EXPERIMENTAL BOTANY
ISSN0098-8472
Volume66Issue:1Pages:74-78
AbstractSubmersed macrophytes in eutrophic lakes often experience high NH4+ concentration and low light availability in the water column. This study found that an NH4+-N concentration of 1 mgL(-1) in the water column apparently caused physiological stress on the macrophyte Potamogeton crispus; L The plants accumulated free amino acids (FAA) and lost soluble carbohydrates (SC) under NH4+ stress. These stressful effects of NH4+ were exacerbated under low light availability. Shading significantly increased NH4+ and FAA contents and dramatically decreased SC and starch contents in the plant shoots. At an NH4+-N concentration of 1 mg L-1 in the water column, neither growth inhibition nor NH4+ accumulation was observed in the plant tissues of P. crispus under normal light availability. The results showed that 1 mg L-1 NH4+-N in the water column was not toxic to P. crispus in a short term. To avoid NH4+ toxicity. active NH4+ transportation out of the cell may cost energy and thus result in a decline of carbohydrate. When NH4+ inescapably accumulates in the plant cell, i.e. under NH4+ Stress and shading, NH4+ is scavenged by FAA synthesis. (c) 2009 Published by Elsevier B.V.; Submersed macrophytes in eutrophic lakes often experience high NH4+ concentration and low light availability in the water column. This study found that an NH4+-N concentration of 1 mgL(-1) in the water column apparently caused physiological stress on the macrophyte Potamogeton crispus; L The plants accumulated free amino acids (FAA) and lost soluble carbohydrates (SC) under NH4+ stress. These stressful effects of NH4+ were exacerbated under low light availability. Shading significantly increased NH4+ and FAA contents and dramatically decreased SC and starch contents in the plant shoots. At an NH4+-N concentration of 1 mg L-1 in the water column, neither growth inhibition nor NH4+ accumulation was observed in the plant tissues of P. crispus under normal light availability. The results showed that 1 mg L-1 NH4+-N in the water column was not toxic to P. crispus in a short term. To avoid NH4+ toxicity. active NH4+ transportation out of the cell may cost energy and thus result in a decline of carbohydrate. When NH4+ inescapably accumulates in the plant cell, i.e. under NH4+ Stress and shading, NH4+ is scavenged by FAA synthesis. (c) 2009 Published by Elsevier B.V.
SubtypeArticle
KeywordEutrophication Ammonium Toxicity Carbohydrate Free Amino Acids Macrophyte
Department[Cao, Te; Xie, Ping; Ni, Leyi; Zhang, Meng; Xu, Jun] Chinese Acad Sci, Inst Hydrobiol, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
Subject AreaPlant Sciences ; Environmental Sciences
DOI10.1016/j.envexpbot.2008.10.004
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Funding OrganizationNSFC [30570280]; National Basic Research Program of China [2002CB412300] ; NSFC [30570280]; National Basic Research Program of China [2002CB412300] ; NSFC [30570280]; National Basic Research Program of China [2002CB412300] ; NSFC [30570280]; National Basic Research Program of China [2002CB412300]
Indexed BySCI
Language英语
WOS Research AreaPlant Sciences ; Environmental Sciences & Ecology
WOS SubjectPlant Sciences ; Environmental Sciences
WOS IDWOS:000265127100011
WOS KeywordFREE AMINO-ACIDS ; SUBMERSED MACROPHYTE ; AMMONIUM TOXICITY ; PLANTS ; GROWTH ; ACCUMULATION ; DECLINE ; MECHANISM ; NITRATE ; LAKES
Funding OrganizationNSFC [30570280]; National Basic Research Program of China [2002CB412300] ; NSFC [30570280]; National Basic Research Program of China [2002CB412300] ; NSFC [30570280]; National Basic Research Program of China [2002CB412300] ; NSFC [30570280]; National Basic Research Program of China [2002CB412300]
Citation statistics
Cited Times:45[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/7784
Collection期刊论文
Corresponding AuthorNi, LY, Chinese Acad Sci, Inst Hydrobiol, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
AffiliationChinese Acad Sci, Inst Hydrobiol, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
Recommended Citation
GB/T 7714
Cao, Te,Xie, Ping,Ni, Leyi,et al. Carbon and nitrogen metabolism of an eutrophication tolerative macrophyte, Potamogeton crispus, under NH4+ stress and low light availability[J]. ENVIRONMENTAL AND EXPERIMENTAL BOTANY,2009,66(1):74-78.
APA Cao, Te,Xie, Ping,Ni, Leyi,Zhang, Meng,Xu, Jun,&Ni, LY, Chinese Acad Sci, Inst Hydrobiol, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China.(2009).Carbon and nitrogen metabolism of an eutrophication tolerative macrophyte, Potamogeton crispus, under NH4+ stress and low light availability.ENVIRONMENTAL AND EXPERIMENTAL BOTANY,66(1),74-78.
MLA Cao, Te,et al."Carbon and nitrogen metabolism of an eutrophication tolerative macrophyte, Potamogeton crispus, under NH4+ stress and low light availability".ENVIRONMENTAL AND EXPERIMENTAL BOTANY 66.1(2009):74-78.
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