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题名: Variations in kinetics of alkaline phosphatase in sediments of eutrophic, shallow, Chinese lakes
作者: Zhou, Yiyong; Cao, Xiuyun; Song, Chunlei; Li, Jianqiu; Chen, Guoyuan; Peng, Liang
关键词: alkaline phosphatase ; kinetics ; sediment ; eutrophication ; inhibitions ; immobilization
刊名: HYDROBIOLOGIA
发表日期: 2007-05-01
DOI: 10.1007/s10750-006-0503-7
卷: 581, 页:109-116
收录类别: ISTP ; SCI
文章类型: Article
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Marine & Freshwater Biology
研究领域[WOS]: Marine & Freshwater Biology
英文摘要: Kinetics 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.
关键词[WOS]: IMMOBILIZED ACID-PHOSPHATASE ; PHOSPHORUS AVAILABILITY ; ENZYME-ACTIVITIES ; VENICE LAGOON ; ZINC ; INHIBITION ; GRADIENT ; DONGHU ; WATER
语种: 英语
WOS记录号: WOS:000244992800012
ISSN号: 0018-8158
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/27238
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
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