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Metabolite repression inhibits degradation of benzo[a]pyrene and dibenz[a,h]anthracene by Stenotrophomonas maltophilia VUN 10,003
Citation
Juhasz, AL and Stanley, GA and Britz, ML, Metabolite repression inhibits degradation of benzo[a]pyrene and dibenz[a,h]anthracene by Stenotrophomonas maltophilia VUN 10,003, Journal of Industrial Microbiology and Biotechnology, 28, (2) pp. 88-96. ISSN 1367-5435 (2002) [Refereed Article]
DOI: doi:10.1038/sj.jim.7000216
Abstract
Large inocula of Stenotrophomonas maltophilia VUN 10,003 were used to investigate bacterial degradation of benzo[a]pyrene and dibenz[a,h]anthracene. Although strain VUN 10,003 was capable of degrading 10-15 mg l-1 of the five-ring compounds in the presence of pyrene after 63 days, further addition of pyrene after degradation of the five-ring polycyclic aromatic hydrocarbons (PAHs) ceased did not stimulate significant decreases in the concentration of benzo[a]pyrene or dibenz[a,h]anthracene. However, pyrene was degraded to undetectable levels 21 days after its addition. The amount of benzo[a]pyrene and dibenz[a,h]anthracene degraded by strain VUN 10,003 was not affected by the initial concentration of the compounds when tested at 25-100 mg l-1, by the accumulation of by-products from pyrene catabolism or a loss of ability by the cells to catabolise benzo[a]pyrene or dibenz[a,h]anthracene. Metabolite or by-product repression was suspected to be responsible for the inhibition: By-products from the degradation of the five-ring compounds inhibited their further degradation.
Item Details
Item Type: | Refereed Article |
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Research Division: | Biological Sciences |
Research Group: | Microbiology |
Research Field: | Bacteriology |
Objective Division: | Expanding Knowledge |
Objective Group: | Expanding knowledge |
Objective Field: | Expanding knowledge in the biological sciences |
UTAS Author: | Britz, ML (Professor Margaret Britz) |
ID Code: | 73318 |
Year Published: | 2002 |
Web of Science® Times Cited: | 35 |
Deposited By: | Research Division |
Deposited On: | 2011-09-26 |
Last Modified: | 2011-09-26 |
Downloads: | 0 |
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