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Variations in kinetics of alkaline phosphatase in sediments of eutrophic, shallow, Chinese lakes
Zhou, Yiyong; Cao, Xiuyun; Song, Chunlei; Li, Jianqiu; Chen, Guoyuan; Peng, Liang; Zhou, YY, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
2007
Conference NameInternational Symposium on the Eutrophication Process and Control in Large Shallow Lakes
Source PublicationHYDROBIOLOGIA
Pages109-116
Conference DateAPR 22-26, 2005
Conference PlaceNanjing, PEOPLES R CHINA
DepartmentChinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China; Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
AbstractKinetics of alkaline phosphatase in sediments of a shallow Chinese freshwater lake (Lake Donghu) were investigated. Spatially, among 20 sites sampled, V-max and K-m values of alkaline phosphatase in surface sediments were higher in the zone adjacent to sites with the highest chlorophyll a concentrations. Vertically, there was a peak in V-max at intermediate sediment depths in addition to the expected maximum at the surface. Some inhibitors, such as CuSO4, ZnSO4 and Na2WO4, showed significantly different effects on kinetics of alkaline phosphatase in interstitial water and sediments. Moreover, alkaline phosphatase in interstitial water and sediments responded to Na2WO4 in different ways in Lake Taihu. These observations imply that the enzyme is immobilized in sediments, which became more stable with accelerated eutrophication, as suggested by highest alkaline phosphatase activity (APA) in sediments corresponding with highest water column chlorophyll a concentrations in Lake Donghu.
KeywordAlkaline Phosphatase Kinetics Sediment Eutrophication Inhibitions Immobilization
Indexed BySCI
Language英语
WOS IDWOS:000244992800012
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type会议论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/11773
Collection会议论文
Corresponding AuthorZhou, YY, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
Recommended Citation
GB/T 7714
Zhou, Yiyong,Cao, Xiuyun,Song, Chunlei,et al. Variations in kinetics of alkaline phosphatase in sediments of eutrophic, shallow, Chinese lakes[C],2007:109-116.
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