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פותח על ידי קלירמאש פתרונות בע"מ -
Significant levels of extracellular reactive oxygen species produced by brown rot basidiomycetes on cellulose
Year:
2002
Source of publication :
FEBS Letters
Authors :
כהן, רוני
;
.
Volume :
531
Co-Authors:
Cohen, R., Department of Bacteriology, University of Wisconsin, Madison, WI 53706, United States
Jensen Jr., K.A., USDA Forest Products Laboratory, Madison, WI 53726, United States
Houtman, C.J., USDA Forest Products Laboratory, Madison, WI 53726, United States
Hammel, K.E., Department of Bacteriology, University of Wisconsin, Madison, WI 53706, United States, USDA Forest Products Laboratory, Madison, WI 53726, United States
Facilitators :
From page:
483
To page:
488
(
Total pages:
6
)
Abstract:
It is often proposed that brown rot basidiomycetes use extracellular reactive oxygen species (ROS) to accomplish the initial depolymerization of cellulose in wood, but little evidence has been presented to show that the fungi produce these oxidants in physiologically relevant quantities. We used [14C]phenethyl polyacrylate as a radical trap to estimate extracellular ROS production by two brown rot fungi, Gloeophyllum trabeum and Postia placenta, that were degrading cellulose. Both fungi oxidized aromatic rings on the trap to give monohydroxylated and more polar products in significant yields. All of the cultures contained 2,5-dimethoxyhydroquinone, a fungal metabolite that has been shown to drive Fenton chemistry in vitro. These results show that extracellular ROS occur at significant levels in cellulose colonized by brown rot fungi, and suggest that hydroquinone-driven ROS production may contribute to decay by diverse brown rot species. © 2002 Federation of European Biochemical Societies. Published by Elsevier Science B.V. All rights reserved.
Note:
Related Files :
aromatic compound
Basidiomycota
fungi
hydroquinone derivative
oxidation
reactive oxygen species
עוד תגיות
תוכן קשור
More details
DOI :
10.1016/S0014-5793(02)03589-5
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
25397
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:14
Scientific Publication
Significant levels of extracellular reactive oxygen species produced by brown rot basidiomycetes on cellulose
531
Cohen, R., Department of Bacteriology, University of Wisconsin, Madison, WI 53706, United States
Jensen Jr., K.A., USDA Forest Products Laboratory, Madison, WI 53726, United States
Houtman, C.J., USDA Forest Products Laboratory, Madison, WI 53726, United States
Hammel, K.E., Department of Bacteriology, University of Wisconsin, Madison, WI 53706, United States, USDA Forest Products Laboratory, Madison, WI 53726, United States
Significant levels of extracellular reactive oxygen species produced by brown rot basidiomycetes on cellulose
It is often proposed that brown rot basidiomycetes use extracellular reactive oxygen species (ROS) to accomplish the initial depolymerization of cellulose in wood, but little evidence has been presented to show that the fungi produce these oxidants in physiologically relevant quantities. We used [14C]phenethyl polyacrylate as a radical trap to estimate extracellular ROS production by two brown rot fungi, Gloeophyllum trabeum and Postia placenta, that were degrading cellulose. Both fungi oxidized aromatic rings on the trap to give monohydroxylated and more polar products in significant yields. All of the cultures contained 2,5-dimethoxyhydroquinone, a fungal metabolite that has been shown to drive Fenton chemistry in vitro. These results show that extracellular ROS occur at significant levels in cellulose colonized by brown rot fungi, and suggest that hydroquinone-driven ROS production may contribute to decay by diverse brown rot species. © 2002 Federation of European Biochemical Societies. Published by Elsevier Science B.V. All rights reserved.
Scientific Publication
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