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Title: Biochemical inhibition of acid phosphatase activity in two mountain spruce forest soils

Journal Article · · Biology and Fertility of Soils

The product inhibition of the 4-Methylumbelliferyl phosphate (MUB-P) decay rate, a measure of potential acid phosphatase activity, has not been considered in most of the published kinetic studies. The aim of this study was to determine the type and strength of the product inhibition in order to better define reaction conditions at which the acid phosphatase activity assay produces unbiased results. The MUB-P decay rate was measured in the forest floor and topsoil organic horizons of two spruce forest catchments at different initial MUB-P and P-PO4 3- concentrations. Furthermore, the type and strength of the inhibition was analyzed by non-linear regression. We found that MUB-P decay was competitively inhibited by the P-PO4 3- but also by dissolved organic P. By using estimated kinetic parameters, we calculated an underestimation of potential acid phosphatase activity by up to ~20% at concentrations of added MUB-P as high as 300 µmol g-1 dry weight and an incubation time one hour due to background inorganic and organic P concentrations in range of units of µmol per gram of dry soil. We discuss approaches that can be used to minimize the underestimation and show that the previously defined recommendations might not be always sufficient to avoid the bias. Therefore, we recommend to analyze progress curves at a wide range of initial MUB-P concentrations using non-linear methods when the enzyme assay is optimized for a given soil. When changes in inorganic and/or organic P concentrations are expected, we further recommend measuring background inorganic and organic P concentrations.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
Czech Science Foundation; USDOE
Grant/Contract Number:
AC05-76RL01830
OSTI ID:
1821861
Report Number(s):
PNNL-SA--148397
Journal Information:
Biology and Fertility of Soils, Journal Name: Biology and Fertility of Soils Journal Issue: 7 Vol. 57; ISSN 0178-2762
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English

References (73)

A theoretical analysis of cellulase product inhibition: Effect of cellulase binding constant, enzyme/substrate ratio, and β-glucosidase activity on the inhibition pattern journal September 1992
Utilization of integrated Michaelis-Menten equation to determine kinetic constants journal January 2007
Interactions ofStreptomyces griseus aminopeptidase with amino acid reaction products and their implications toward a catalytic mechanism journal January 2001
Estimating regression models with unknown break-points journal January 2003
Function of the PHO regulatory genes for repressible acid phosphatase synthesis in Saccharomyces cerevisiae journal May 1989
Mycelial forms of Pseudallescheria boydii present ectophosphatase activities journal April 2007
Soil enzyme activity: a brief history and biochemistry as a basis for appropriate interpretations and meta-analysis journal October 2017
The effects of tree rhizodeposition on soil exoenzyme activity, dissolved organic carbon, and nutrient availability in a subalpine forest ecosystem journal July 2007
Phosphorus Limitation in Boreal Forests: Effects of Aluminum and Iron Accumulation in the Humus Layer journal April 2002
In situ phosphorus dynamics in soil: long-term ion-exchange resin study journal July 2018
Impact of Soil Sorption Characteristics and Bedrock Composition on Phosphorus Concentrations in two Bohemian Forest Lakes journal May 2006
A Molecular Description of Acid Phosphatase journal June 2012
Phosphatases in soils journal January 1977
Determination of phosphatase activities of soils and animal wastes journal January 1978
Criteria for measurement of microbial growth and activity in soil journal January 1978
Effects of phosphorus addition and energy supply on acid phosphatase production and activity in soils journal January 1979
Extraction, purification and properties of soil hydrolases journal January 1980
Measurement of microbial biomass phosphorus in soil journal January 1982
Hydrolases extracted from soil: Kinetic parameters of several enzymes catalysing the same reaction journal January 1982
Assessment of phosphatase activity in soils journal January 1983
Chloroform fumigation and the release of soil nitrogen: A rapid direct extraction method to measure microbial biomass nitrogen in soil journal January 1985
Phosphomonoesterase activity in forest soils journal January 1986
An extraction method for measuring soil microbial biomass C journal January 1987
Kinetics of acid phosphatase activity in various soils of galicia (NW Spain) journal January 1988
Comparison of kinetic and thermodynamic parameters of phosphomonoesterases of soils and of corn and soybean roots journal January 1988
Validation and characterization of uninhibited enzyme kinetics performed in multiwell plates journal September 2004
An algebraic model to determine substrate kinetic parameters by global nonlinear fit of progress curves journal February 2017
Coupling the resource stoichiometry and microbial biomass turnover to predict nutrient mineralization and immobilization in soil journal March 2021
Separating cellular metabolism from exoenzyme activity in soil organic matter decomposition journal April 2014
Can enzymatic stoichiometry be used to determine growth-limiting nutrients for microorganisms? - A critical assessment in two subtropical soils journal January 2019
Soil microbial communities with greater investment in resource acquisition have lower growth yield journal May 2019
A modified single solution method for the determination of phosphate in natural waters journal January 1962
A microplate fluorimetric assay for the study of enzyme diversity in soils journal October 2001
The effects of long term nitrogen deposition on extracellular enzyme activity in an Acer saccharum forest soil journal September 2002
Effects of soil organic matter extracted from soil on acid phosphomonoesterase journal October 1996
Modeling of soil phosphatase activity in land use ecosystems and topsoil layers in the Brazilian Cerrado journal October 2018
Response of soil alkaline phosphatase to biochar amendments: Changes in kinetic and thermodynamic characteristics journal March 2019
Environmental drivers and stoichiometric constraints on enzyme activities in soils from rhizosphere to continental scale journal March 2019
Soil biochemical activity and phosphorus transformations and losses from acidified forest soils journal October 2004
Application of -nitrophenol (NP) enzyme assays in degraded tropical soils journal April 2005
Responses of extracellular enzymes to simple and complex nutrient inputs journal May 2005
Performance of para-nitrophenyl phosphate and 4-methylumbelliferyl phosphate as substrate analogues for phosphomonoesterase in soils with different organic matter content journal August 2005
Thermodynamic parameters of enzymes in grassland soils from Galicia, NW Spain journal January 2007
Optimization of hydrolytic and oxidative enzyme methods for ecosystem studies journal July 2011
Comment on the review by German et al. (2011) “Optimization of hydrolytic and oxidative enzyme methods for ecosystem studies” [Soil Biology & Biochemistry 43: 1387–1397] journal May 2012
Response to Steen and Ziervogel's comment on “Optimization of hydrolytic and oxidative enzyme methods to ecosystem studies” [Soil Biology & Biochemistry 43: 1387–1397] journal May 2012
Microbial N immobilization is of great importance in acidified mountain spruce forest soils journal April 2013
Kinetic parameters of phosphatase: A quantitative synthesis journal October 2013
Seasonal patterns of microbial extracellular enzyme activities in an arctic tundra soil: Identifying direct and indirect effects of long-term summer warming journal November 2013
Changes in phosphatase kinetics with soil depth across a variable tropical landscape journal April 2014
Temperature selects for static soil enzyme systems to maintain high catalytic efficiency journal June 2016
Estimating decay dynamics for enzyme activities in soils from different ecosystems journal November 2017
Methodological recommendations for optimizing assays of enzyme activities in soil samples journal October 2018
Does ectomycorrhiza have a universal key role in the formation of soil organic matter in boreal forests? journal January 2020
Temperature sensitivity of ecoenzyme kinetics driving litter decomposition: The effects of nitrogen enrichment, litter chemistry, and decomposer community journal September 2020
The Catalytic Mechanisms of Binuclear Metallohydrolases journal August 2006
Mechanistic and Evolutionary Insights from Comparative Enzymology of Phosphomonoesterases and Phosphodiesterases across the Alkaline Phosphatase Superfamily journal October 2016
Regulation of soil phosphatase and chitinase activity by N and P availability journal January 2000
A global dataset of plant available and unavailable phosphorus in natural soils derived by Hedley method journal August 2018
What happens when data are fitted to the wrong equation? journal June 1978
Analysis of progress curves for a highly concentrated Michaelian enzyme in the presence or absence of product inhibition journal October 1985
Characterization of a β-N-acetylglucosaminidase ofEscherichia coli and Elucidation of Its Role in Muropeptide Recycling and β-Lactamase Induction journal December 2000
Kinetic parameters of phosphatase activity along a xeric dolomitic soil chronosequence related to wildfires journal July 1993
Semi-Micro Determination of Total Phosphorus in Fresh Waters with Perchloric Acid Digestion journal October 1993
Phosphatases in Horse and Chicken Manure Composts journal March 1999
Contrasting responses of phosphatase kinetic parameters to nitrogen and phosphorus additions in forest soils journal August 2017
Carbon use efficiency of microbial communities: stoichiometry, methodology and modelling journal April 2013
An ectophosphatase activity in Cryptococcus neoformans journal November 2006
Fluorescence correction for measurements of enzyme activity in natural waters using methylumbelliferylsubstrates journal February 1986
Excess of Organic Carbon in Mountain Spruce Forest Soils after Bark Beetle Outbreak Altered Microbial N Transformations and Mitigated N-Saturation journal July 2015
A comparison of 14 soil phosphorus extraction methods applied to 50 agricultural soils from Central Europe [A comparison of 14 soil phosphorus extraction methods applied to 50 agricultural soils from Central Europe] journal June 2016
Solving Differential Equations in R : Package deSolve journal January 2010
High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities journal January 2013