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Cytochemical Localization of Hydrogen Peroxide Production during Wood Decay by Brown-Rot Fungi Tyromyces palustris and Coniophora puteana
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Yoon Soo Kim
Published/Copyright:
June 1, 2005
Summary
It is not definitively known whether or not the production of extracellular hydrogen peroxide (H2O2) is a universal characteristic of brown-rot fungi. Cytochemical localization of H2O2 was tested in two brown-rot fungi, Tyromyces palustris and Coniophora puteana, by staining with cerium chloride. Transmission electron microscopy (TEM) showed the deposition of cerium perhydroxide within the fungal hyphae as well as wood cell walls affected by brown-rot fungi. TEM work indicated that extracellular H2O2 was present in brown-rot fungi and that H2O2 from brown-rot fungi diffused into the wood cell walls in the early stages of decay. The present work strongly suggests that H2O2 plays an important role in the early degradation of cellulose by brown-rot fungi. The usefulness of this technique for localizing H2O2 at high resolution with minimal nonspecific deposition is also discussed.
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Published Online: 2005-06-01
Published in Print: 2002-02-06
Copyright © 2002 by Walter de Gruyter GmbH & Co. KG
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Articles in the same Issue
- Transverse Young's Moduli and Cell Shapes in Coniferous Early Wood
- Cytochemical Localization of Hydrogen Peroxide Production during Wood Decay by Brown-Rot Fungi Tyromyces palustris and Coniophora puteana
- The Further Chemistry of Ellagic Acid II. Ellagic Acid and Water-Soluble Ellagates as Metal Precipitants
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- Moisture Content and Extractive Materials in Maritime Pine Wood by Low Field 1H NMR
- Ozone Oxidation and Structural Features of an Almond Shell Lignin Remaining after Furfural Manufacture
- FTIR Microscopy and Ultrastructural Investigation of Silylated Solid Wood
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- Reactions of Lignin with Cyanamide Activated Hydrogen Peroxide. Part 3. The Degradation of Pine Kraft Lignin
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