Cometabolic degradation of dibenzofuran by biphenyl-cultivated Ralstonia sp. strain SBUG 290.
Cells of the gram-negative bacterium Ralstonia sp. strain SBUG 290 grown in the presence of biphenyl are able to cooxidize dibenzofuran which has been 1,2-hydroxylated. Meta cleavage of the 1, 2-dihydroxydibenzofuran between carbon atoms 1 and 9b produced 2-hydroxy-4-(3'-oxo-3'H-benzofuran-2'-yliden)but-2-enoic acid, which was degraded completely via salicylic acid. The presence of these intermediates indicates a degradation mechanism for dibenzofuran via lateral dioxygenation by Ralstonia sp. strain SBUG 290.
Becher
D
D
Institut für Mikrobiologie und Molekularbiologie, Ernst-Moritz-Arndt-Universität Greifswald, D-17487 Greifswald, Germany. dbecher@biologie.uni-greifswald.de
Specht
M
M
Hammer
E
E
Francke
W
W
Schauer
F
F
D001572:Benzofurans / Q000378:metabolism*; D001673:Biodegradation, Environmental; D001713:Biphenyl Compounds / Q000378:metabolism*; D006900:Hydroxylation; D010084:Oxidation-Reduction; D020560:Proteobacteria / Q000254:growth & development* / Q000378:metabolism*
D001572:Benzofurans; D001713:Biphenyl Compounds; C010574:biphenyl; C023614:dibenzofuran