DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Soil oxidoreductase zymography: Visualizing spatial distributions of peroxidase and phenol oxidase activities at the root-soil interface

Journal Article · · Soil Biology and Biochemistry
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [2];  [3];  [3]
  1. Helmholtz-Centre for Environmental Research – UFZ, Halle (Saale) (Germany); Isfahan Univ. of Technology (Iran); Department of Soil Science, College of Agriculture, Isfahan University of Technology
  2. Michigan State Univ., East Lansing, MI (United States)
  3. Helmholtz-Centre for Environmental Research – UFZ, Halle (Saale) (Germany)

Decomposition of organic material in the rhizosphere – the most dynamic microbial habitat in soil – involves arrays of oxidoreductase and hydrolytic enzymes. Spatial distributions of various hydrolytic activities in soil have already been explored by zymographic techniques. However, the distribution of oxidative activity in the rhizosphere remains to be studied. Thus, we extended a Time-Lapse Zymography technique, using Amplex Red® reagent, to visualize and quantify distributions of phenol oxidase and peroxidase activities in the rhizosphere of Zea mays L. growing in a Haplic Phaeozem and the non-rhizospheric soil. The gross oxidative activity was greatest at the root surfaces, and fell to background soil levels 1.26 and 0.73 mm from seminal (>1 mm diameter) and lateral (<0.5 mm diameter) roots, respectively. The rhizosphere extent relative to the root radius was 59% broader around lateral than around seminal roots. The greatest activities, up to 30 nmol cm–2 min–1, were peroxidase-dominated and closely associated with roots. Here, the results confirm the utility of the approach for studying spatio-temporal distributions of oxidative activities in soil. However, actual activity of oxidoreductases in the field will be strongly controlled by fluctuating environmental conditions such as soil aeration and the gradient of reactive oxygen species, which need to be considered especially in anoxic soils.

Research Organization:
Univ. of Wisconsin, Madison, WI (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
SC0018409
OSTI ID:
1863595
Journal Information:
Soil Biology and Biochemistry, Journal Name: Soil Biology and Biochemistry Vol. 167; ISSN 0038-0717
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (50)

Review: Factors affecting rhizosphere priming effects journal August 2002
Experimental platforms for the investigation of spatiotemporal patterns in the rhizosphere—Laboratory and field scale journal August 2020
Laccases: toward disentangling their diversity and functions in relation to soil organic matter cycling journal February 2010
Spatial distribution and catalytic mechanisms of β-glucosidase activity at the root-soil interface journal February 2016
Laccases and other polyphenol oxidases in ecto- and ericoid mycorrhizal fungi journal June 2002
Rhizosphere: biophysics, biogeochemistry and ecological relevance journal January 2009
Enzyme activity in soil: Location and a possible role in microbial ecology journal January 1982
Oxidoreductase enzymes liberated by plant roots and their effects on soil humic material journal March 1999
In situ ageing of fine beech roots (Fagus sylvatica) assessed by transmission electron microscopy and electron energy loss spectroscopy: description of microsites and evolution of polyphenolic substances journal May 2002
Effects of peroxidase substrates on the Amplex red/peroxidase assay: Antioxidant properties of anthracyclines journal July 2005
Oxidoreductase activity of sorghum root exudates in a phenanthrene-contaminated environment journal February 2009
The emerging role for bacteria in lignin degradation and bio-product formation journal June 2011
Studies on the photosensitized reduction of resorufin and implications for the detection of oxidative stress with Amplex Red journal July 2011
Photooxidation of Amplex red to resorufin: Implications of exposing the Amplex red assay to light journal September 2012
Oxygen matters: Short- and medium-term effects of aeration on hydrolytic enzymes in a paddy soil journal February 2022
Peroxidase activity and phenolic compounds content in maize root and leaf apoplast, and their association with growth journal November 2008
Different peroxidase activities and expression of abiotic stress-related peroxidases in apical root segments of wheat genotypes with different drought stress tolerance under osmotic stress journal March 2012
Soil zymography: Simple and reliable? Review of current knowledge and optimization of the method journal September 2019
How “hot” are hotspots: Statistically localizing the high-activity areas on soil and rhizosphere images journal December 2020
Variation in quantity and chemical composition of soil dissolved organic matter in a peri-urban critical zone observatory watershed in Eastern China journal October 2019
Phenol oxidase, peroxidase and organic matter dynamics of soil journal March 2010
Optimization of hydrolytic and oxidative enzyme methods for ecosystem studies journal July 2011
Soil enzymes in a changing environment: Current knowledge and future directions journal March 2013
Soil zymography – A novel in situ method for mapping distribution of enzyme activity in soil journal March 2013
Distribution of microbial- and root-derived phosphatase activities in the rhizosphere depending on P availability and C allocation – Coupling soil zymography with 14C imaging journal December 2013
Measuring phenol oxidase and peroxidase activities with pyrogallol, l-DOPA, and ABTS: Effect of assay conditions and soil type journal December 2013
Rhizosphere priming effects on soil carbon and nitrogen mineralization journal September 2014
Substrate quality affects kinetics and catalytic efficiency of exo-enzymes in rhizosphere and detritusphere journal January 2016
Earthworm burrows: Kinetics and spatial distribution of enzymes of C-, N- and P- cycles journal August 2016
Warming increases hotspot areas of enzyme activity and shortens the duration of hot moments in the root-detritusphere journal April 2017
Spatial patterns of enzyme activities in the rhizosphere: Effects of root hairs and root radius journal March 2018
Quantitative soil zymography: Mechanisms, processes of substrate and enzyme diffusion in porous media journal December 2018
Rhizosphere size and shape: Temporal dynamics and spatial stationarity journal August 2019
Coupling zymography with pH mapping reveals a shift in lupine phosphorus acquisition strategy driven by cluster roots journal August 2019
Co-occurring increased phosphatase activity and labile P depletion in the rhizosphere of Lupinus angustifolius assessed with a novel, combined 2D-imaging approach journal February 2021
Spatially-distributed microbial enzyme activities at intact, coated macropore surfaces in Luvisol Bt-horizons journal May 2021
Time-lapse approach to correct deficiencies of 2D soil zymography journal June 2021
A novel fluorimetric method for laccase activities measurement using Amplex Red as substrate journal January 2017
Fiji: an open-source platform for biological-image analysis journal June 2012
Direct oxidative pathway from amplex red to resorufin revealed by in situ confocal imaging
  • Lefrançois, Pauline; Vajrala, Venkata Suresh Reddy; Arredondo, Imelda Bonifas
  • Physical Chemistry Chemical Physics, Vol. 18, Issue 37 https://doi.org/10.1039/C6CP04438G
journal January 2016
An in Vivo Imaging Assay Detects Spatial Variability in Glucose Release from Plant Roots journal September 2018
Calibration of 2-D soil zymography for correct analysis of enzyme distribution journal March 2019
An improved Amplex Red‐based fluorometric assay of phenol oxidases and peroxidases activity: A case study on Haplic Chernozem journal March 2022
Phylogenetic analysis, genomic organization, and expression analysis of multi‐copper oxidases in the ectomycorrhizal basidiomycete Laccaria bicolor journal April 2009
Fungal laccases – occurrence and properties journal March 2006
Are root exudates more important than other sources of rhizodeposits in structuring rhizosphere bacterial communities?: Root exudates and rhizosphere bacteria journal March 2010
Reactive oxygen species regulate auxin levels to mediate adventitious root induction in Arabidopsis hypocotyl cuttings journal November 2019
Ectomycorrhizal fungi decompose soil organic matter using oxidative mechanisms adapted from saprotrophic ancestors journal November 2015
Unexpected Behavior of Some Nitric Oxide Modulators under Cadmium Excess in Plant Tissue journal March 2014
Abiotic and Biotic Controls on Soil Organo–Mineral Interactions: Developing Model Structures to Analyze Why Soil Organic Matter Persists journal September 2019