Variations in kinetics of alkaline phosphatase in sediments of eutrophic, shallow, Chinese lakes

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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
	2007
会议名称	International Symposium on the Eutrophication Process and Control in Large Shallow Lakes
会议日期	APR 22-26, 2005
会议地点	Nanjing, PEOPLES R CHINA
关键词	alkaline phosphatase kinetics sediment eutrophication inhibitions immobilization
页码	109-116
通讯作者	Zhou, YY, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
中文摘要	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.
收录类别	SCI
会议录	HYDROBIOLOGIA
语种	英语
WOS记录号	WOS:000244992800012
内容类型	会议论文
源URL	[http://ir.ihb.ac.cn/handle/342005/11773]
专题	水生生物研究所_中科院水生所知识产出（2009年前）_会议论文
推荐引用方式 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]. 见:International Symposium on the Eutrophication Process and Control in Large Shallow Lakes. Nanjing, PEOPLES R CHINA. APR 22-26, 2005.