Degradation of trichlorophenols by Alcaligenes eutrophus JMP134

Pascale Clément, Valeria Matus, Leonidas Cardenas, Bernardo Gonzalez

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The degradation of chlorophenols by Alcaligenes eutrophus JMP134 (pJP4) was studied. The strain grew on 2,4,6-trichlorophenol or 2,4,6-tribromophenol as the sole carbon and energy source. Complete degradation of 2,4,6-trichlorophenol was confirmed by chloride release and gas chromatography analysis of supernatants from growth cultures. The 2,3,5-, 2,3,4-, 2,3,6-and 2,4,5-isomers of trichlorophenol did not support growth. However, up to 40% of 2,4,5-trichlorophenol was mineralized during growth of A. eutrophus on chemostats fed with either phenol (0.4 mM) or 2,4,6-trichlorophenol (0.4 mM) plus 2,4,5-trichlorophenol (0.1 mM). Growth on 2,4,6-trihalophenols was also observed in A. Eutrophus JMP222, the strain lacking pJP4, suggesting that this new degradative ability reported for A. eutrophus is not related to pJP4 encoded catabolic functions.

Original languageEnglish
Pages (from-to)51-55
Number of pages5
JournalFEMS Microbiology Letters
Issue number1-2
StatePublished - 15 Mar 1995


  • 2,4,5-Trichlorophenol
  • 2,4,6-Trichlorophenol
  • Alcaligenes eutrophus
  • Dechlorination


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