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水体磷酸酶:来源、特征及其生态学意义
引用本文:周易勇,付永清.水体磷酸酶:来源、特征及其生态学意义[J].湖泊科学,1999,11(3):274-282.
作者姓名:周易勇  付永清
作者单位:中国科学院水生生物研究所!武汉430072
基金项目:国家自然科学基金!39170165 国家自然科学基金!39670145
摘    要:酶在水生态系统的物质循环与能量转化过程中具有关键作用。本文以湖泊磷酸酶为例了水环境中酶的来源,特下及其生态学意义。酶主要源于细菌,浮游植物和浮游动物,且能以胞外的或溶解态的形式存在。

关 键 词:湖泊  磷酸酶  生态酶学  磷循环  水体磷酸酶
收稿时间:1998/3/31 0:00:00
修稿时间:1998/7/12 0:00:00

Phosphatases in Natural Water:Origin, Characteristics and Ecological Significance
ZHOU Yi-yong and FU Yong-qing.Phosphatases in Natural Water:Origin, Characteristics and Ecological Significance[J].Journal of Lake Science,1999,11(3):274-282.
Authors:ZHOU Yi-yong and FU Yong-qing
Institution:Institute of Hydrobiology, Chinese Academy of Sciemces, Wuhan 430072 and Institute of Hydrobiology, Chinese Academy of Sciemces, Wuhan 430072
Abstract:In water ecosystems, enzymes play a key role in the processes of nutrient cycling and energy transformation. The origin, characteristics and ecological significance of the phosphatases in lakes, as an example, are reviewed in this paper. The enzymes, extracellular and dissolved, are mainly from bacteria, phytoplankton and zooplankton. They show stability and suitability towards the variations in pH value, temperature and other physical and chemical factors. Planktons seem to compensate for their phosphorus deficiency not only by an increase in enzyme production but also by an improved ability to use low substrate concentrations, which implies the potential significance of enzymes in environmental monitoring. Some ecological relationships might be explained from the points of view of enzymatic reactions. In short, the special and integrated functions of the enzyme in natural waters, in terms of nutrient supplying, nutrient status indicating and cycle mediating, have made it an essential part of the ecological enzymology.
Keywords:Enzymes in natural water  ecological enzymology  lake  phosphatase    phosphorus cycling
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