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| Content Provider | PubMed Central |
|---|---|
| Author | Haugland, R. A. Schlemm, D. J. Lyons, R. P. Sferra, P. R. Chakrabarty, A. M. |
| Abstract | Combined cell suspensions of the 2,4,5-trichlorophenoxyacetic acid (2,4,5-T)-metabolizing organism Pseudomonas cepacia AC1100, and the 2,4-dichlorophenoxyacetic acid (2,4-D)-metabolizing organism Alcaligenes eutrophus JMP134 were shown to effectively degrade either of these compounds provided as single substrates. These combined cell suspensions, however, poorly degraded mixtures of the two compounds provided at the same concentrations. Growth and viability studies revealed that such mixtures of 2,4-D and 2,4,5-T were toxic to AC1100 alone and to combinations of AC1100 and JMP134. High-pressure liquid chromatography analyses of culture supernatants of AC1100 incubated with 2,4-D and 2,4,5-T revealed the accumulation of chlorohydroquinone as an apparent dead-end catabolite of 2,4-D and the subsequent accumulation of both 2,4-dichlorophenol and 2,4,5-trichlorophenol. JMP134 cells incubated in the same medium did not catabolize 2,4,5-T and were also inhibited in initiating 2,4-D catabolism. A new derivative of strain AC1100 was constructed by the transfer into this organism of the 2,4-D-degradative plasmid pJP4 from strain JMP134. This new strain, designated RHJ1, was shown to efficiently degrade mixtures of 2,4-D and 2,4,5-T through the simultaneous metabolism of these compounds. |
| Starting Page | 1357 |
| File Format | |
| ISSN | 10985336 |
| e-ISSN | 10985336 |
| Journal | Applied and Environmental Microbiology |
| Issue Number | 5 |
| Volume Number | 56 |
| Language | English |
| Publisher Date | 1990-05-01 |
| Access Restriction | Open |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Ecology Food Science Applied Microbiology and Biotechnology Biotechnology |
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