Degradation of chlorinated biphenyl, dibenzofuran, and dibenzo-p-dioxin by marine bacteria that degrade biphenyl, carbazole, or dibenzofuran.
Marine bacterial strains (BP-PH, CAR-SF, and DBF-MAK) were isolated using biphenyl, carbazole (CAR), or dibenzofuran (DF) respectively as substrates for growth. Their 16S ribosomal DNA sequences showed that the species closest to strain BP-PH, strain CAR-SF, and strain DBF-MAK are Alteromonas macleodii (96.3% identity), Neptunomonas naphthovorans (93.1% identity), and Cycloclasticus pugetii (97.3% identity), respectively. The metabolites produced suggested that strain CAR-SF degrades CAR via dioxygenation in the angular position and by the meta-cleavage pathway, and that strain DBF-MAK degrades DF via both lateral and angular dioxygenation. Polychlorinated biphenyl (KC-300) and 2,3-dichlorodibenzo-p-dioxin were partially degraded by strain BP-PH and strain DBF-MAK, while 2,7-dichlorodibenzo-p-dioxin and 2,4,8-trichlorodibenzofuran remained virtually unchanged.
Fuse
Hiroyuki
H
Institute for Marine Resources and Environment, National Institute of Advanced Industrial Science and Technology, 2-2-2 Hirosuehiro, Kure, Hiroshima 737-0197, Japan. h-fuse@aist.go.jp
Takimura
Osamu
O
Murakami
Katsuji
K
Inoue
Hiroyuki
H
Yamaoka
Yukiho
Y
D001419:Bacteria / Q000378:metabolism*; D001572:Benzofurans / Q000378:metabolism*; D001673:Biodegradation, Environmental; D001713:Biphenyl Compounds / Q000378:metabolism*; D002227:Carbazoles / Q000378:metabolism*; D003470:Culture Media; D004147:Dioxins / Q000378:metabolism*; D008969:Molecular Sequence Data; D010802:Phylogeny; D000072317:Polychlorinated Dibenzodioxins / Q000031:analogs & derivatives* / Q000378:metabolism*; D012623:Seawater / Q000382:microbiology; D014871:Water Microbiology
D001572:Benzofurans; D001713:Biphenyl Compounds; D002227:Carbazoles; D003470:Culture Media; D004147:Dioxins; D000072317:Polychlorinated Dibenzodioxins; C023614:dibenzofuran; C020887:dibenzo(1,4)dioxin