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Applied and Environmental Microbiology, February 1999, p. 674-679, Vol. 65, No. 2
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.
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 trabeum
*
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.
Publication no. 98502 of the Idaho Agricultural Experiment Station.
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