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Isolation and characterization of a biphenyl-utilizing psychrotrophic bacterium,Hydrogenophaga taeniospiralis IA3-A, that cometabolize dichlorobiphenyls and polychlorinated biphenyl congeners in Aroclor 1221 by Adewale J. Lambo; Thakor R. Patel is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

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A psychrotrophic bacterium isolated from polychlorinated biphenyls (PCBs)-contaminated soil grew on biphenyl as sole carbon and energy source, and actively cometabolized PCBs at low temperature. Analysis of cellular fatty acids indicate that the bacterium is most closely related to Hydrogenophaga taeniospiralis. Resting cells incubated with 10 ppm of Aroclor 1221 at 5 or 30 degrees C for 48 h removed all mono-, most di-, and several trichlorobiphenyls. At 5 degrees C, removal of MCBs (monochlorobiphenyls) was between 63 to 89%, DCBs (dichlorobiphenyls) was between 30 to 78%, and TCBs (trichlorobiphenyls) was between 30 to 75%. At 30 degrees C, removal of MCBs was 100%, DCBs was between 30 to 100%, and TCBs was between 27 to 59%. Congeners with two or more ortho chlorine were generally resistant to degradation. However, removal of di-ortho plus para-substituted congeners at 30 degrees C and not at 5 degrees C, suggest that the presence of a para-chlorine enhanced the cometabolism of these congeners at 30 degrees C. Furthermore, after 72 h, resting cells removed 68 and 83% of 500 microM of 2,4'-dichlorobiphenyl (2,4'-DCB) and, 35 and 44% of 500 microM of 2,3-dichlorobiphenyl (2,3-DCB

Who reads Isolation and characterization of a biphenyl-utilizing psychrotrophic bacterium,Hydrogenophaga taeniospiralis IA3-A, that cometabolize dichlorobiphenyls and polychlorinated biphenyl congeners in Aroclor 1221?

Author

Adewale J. Lambo; Thakor R. Patel

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Ltd.; Akademie Verlag; Wiley (ISSN 0233-111X)

Published

2006

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)