soil biology, soil scienceIn many of the publications concerning the measurement of phosphatase activities in soils, the basic rules governing enzyme assays have, at best, been only partially obeyed. This review article concentrates on the measurement of phosphatase activity, draws attention to the ...
Role of Soil Enzymes in Agroecosystem we briefly summarize the potential roles of selected soil enzymes such as urease, 尾-glucosidase, cellulase, dehydrogenase, phosphatase and protease in the ... M Sudhakaran,A Ravanachandar 被引量: 0发表: 2020年 UREASE AND ACID PHOSPHATASE ENZYME MODULATION I...
This paper reports on the persistence of total and immobilised enzyme activities (urease and phosphatase) in a soil amended with organic wastes containing high levels of total-urease and phosphatase activity. Fresh organic materials showed the highest values for both total-enzymatic activities. The ...
enzyme activityphosphorusrhizosphere imagingsoil moisturePhosphatases in soil are of great importance for plant P acquisition. It is hypothesized that root hairs increase rhizosphere phosphatase activity as they release enzymes into soil and stimulate microbial activity. To test the effect of root hairs ...
Small concentrations of fructose did not stimulate phosphatase activity in soil, cause shifts in bacterial community structure or select phosphatase producing species. However, at large concentrations of fructose, phosphatase activity was increased and this was associated with a larger bacterial population ...
Enzyme activity decreased less in the rhizosphere than in the bulk soil: the ratio between phosphatase activity in the rhizosphere and bulk soil was 10 when the soil was close to saturation and 63 when the soil contained 5% water. The relationship between phosphatase activity and local soil WC ...
of microbial biomass-18,19or deforestation, also negatively affect the activity of this enzyme. The heterogeneity in time and space of the distribution of enzymes in soil20has restricted most of the phosphatase research to plot scale studies or controlled experiments under manipulated conditions. Many...
In the majority of cases soil enzyme activities did not differ across all the cropping systems at different P application rates compared to monocrops, with the exception of soil acid phosphatase activity which was higher in maize/legume... ZG Wang,J Xin,XG Bao,... - 《Plos One》 被引量...
The phosphatase activity of the alkaline soil had a greater thermal stability than that of the acid soil. Enzyme kinetic data give K m values ranging from 2.0–4.4 mM in fractions from the alkaline soil (unfractionated soil 4.1 mM) and from 3.6–15.4mM in fractions from the acid soil (...
Kinetic descriptions of the effect of clay minerals on the activity of enzymes are needed for a better understanding of the interaction of enzymes and clays in soil. We used a model clay-enzyme system to study the kinetics of inhibition f acid phosphatase and pyrophosphatase activities in homogeni...