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Applied and Environmental Microbiology, February 1999, p. 674-679, Vol. 65, No. 2
0099-2240/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.

De Novo Synthesis of 4,5-Dimethoxycatechol and 2,5-Dimethoxyhydroquinone by the Brown Rot Fungus Gloeophyllum trabeumdagger

Andrzej Paszczynski,1 Ronald Crawford,1,* David Funk,1 and Barry Goodell2

Institute for Molecular and Agricultural Genetic Engineering and Department of Microbiology, Molecular Biology, and Biochemistry, University of Idaho, Moscow, Idaho 83844-1052,1 and Department of Wood Science and Technology, University of Maine, Orono, Maine 044692

Received 24 August 1998/Accepted 4 November 1998

The new dimethoxycatechol 4,5-dimethoxy-1,2-benzenediol (DMC) and the new dimethoxyhydroquinone 2,5-dimethoxy-1,4-benzenediol (DMH) were isolated from stationary cultures of the brown rot fungus Gloeophyllum trabeum growing on a glucose mineral medium protected from light. The structure was elucidated by gas chromatography-mass spectrometry through comparison to a synthetic standard. Further confirmation was obtained by forming a dimethoxyoxazole derivative by condensation of DMC with methylene chloride and through examination of methylated derivatives. DMC and DMH may serve as ferric chelators, oxygen-reducing agents, and redox-cycling molecules, which would include functioning as electron transport carriers to Fenton's reactions. Thus, they appear to be important components of the brown rot decay system of the fungus.


* Corresponding author. Mailing address: Institute for Molecular and Agricultural Genetic Engineering and Department of Microbiology, Molecular Biology, and Biochemistry, University of Idaho, Moscow, ID 83844-1052. Phone: (208) 885-6580. Fax: (208) 885-5741. E-mail: crawford{at}uidaho.edu.

dagger Publication no. 98502 of the Idaho Agricultural Experiment Station.


Applied and Environmental Microbiology, February 1999, p. 674-679, Vol. 65, No. 2
0099-2240/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.



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