Analysis of bacterial degradation pathways for long-chain alkylphenols involving phenol hydroxylase, alkylphenol monooxygenase and catechol dioxygenase genes

Nguyen Ngoc Tuan, Hsiao Cheng Hsieh, Yi Wen Lin, Shir Ly Huang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

79 Scopus citations

Abstract

Eighteen 4-t-octylphenol-degrading bacteria were isolated and screened for the presence of degradative genes by polymerase chain reaction method using four designed primer sets. The primer sets were designed to amplify specific fragments from multicomponent phenol hydroxylase, single component monooxygenase, catechol 1,2-dioxygenase and catechol 2,3-dioxygenase genes. Seventeen of the 18 isolates exhibited the presence of a 232. bp amplicon that shared 61-92% identity to known multicomponent phenol hydroxylase gene sequences from short and/or medium-chain alkylphenol-degrading strains. Twelve of the 18 isolates were positive for a 324. bp region that exhibited 78-95% identity to the closest published catechol 1,2-dioxygenase gene sequences. The two strains, Pseudomonas putida TX2 and Pseudomonas sp. TX1, contained catechol 1,2-dioxygenase genes also have catechol 2,3-dioxygenase genes. Our result revealed that most of the isolated bacteria are able to degrade long-chain alkylphenols via multicomponent phenol hydroxylase and the ortho-cleavage pathway.

Original languageEnglish
Pages (from-to)4232-4240
Number of pages9
JournalBioresource Technology
Volume102
Issue number5
DOIs
StatePublished - Mar 2011

Keywords

  • Catechol 1,2-dioxygenase
  • Catechol 2,3-dioxygenase
  • Phenol hydroxygenase

Fingerprint

Dive into the research topics of 'Analysis of bacterial degradation pathways for long-chain alkylphenols involving phenol hydroxylase, alkylphenol monooxygenase and catechol dioxygenase genes'. Together they form a unique fingerprint.

Cite this