Psychrotolerant bacteria isolated from arctic soil that degrade polychlorinated biphenyls at low temperatures

ABSTRACT: Psychrotolerant polychlorinated biphenyl (PCB)-degrading bacteria were isolated at 7 degreesC from PCB-contaminated Arctic soil by using biphenyl as the sole organic carbon source. These isolates were distinguished from each other by differences in substrates that supported growth and substrates that were oxidized. 16S ribosomal DNA sequences suggest that these isolates are most closely related to the genus Pseudomonas. Total removal of Aroclor 1242, and rates of removal of selected PCB congeners, by cell suspensions of Arctic soil isolates and the mesophile Burkholderia cepacia LB400 were determined at 7, 37, and 50 degreesC. Total removal values of Aroclor 1242 at 7 degreesC by LB400 and most Arctic soil isolates were similar (between 2 and 3.5 &mgr;g of PCBs per mg of cell protein). How

SUBMITTER: Master ER 

PROVIDER: S-EPMC90929 | biostudies-literature | 1998 Dec

REPOSITORIES: biostudies-literature