Versatile aromatic compound-degrading capacity and microdiversity of Thauera strains isolated from a coking wastewater treatment bioreactor

Yuejian Mao, Xiaojun Zhang, Xi Xia, Huihui Zhong, Liping Zhao

Research output: Contribution to journalArticle

53 Scopus citations

Abstract

Bacteria of the Thauera genus have been described as important aromatic compound degraders and have attracted increased attention. In this study, three Thauera strains (Q4, Q20-C, and 3-35) were isolated from a coking wastewater treatment plant (WWTP) with a high abundance of Thauera. The 16S rRNA, nitrite reductase, and phenol hydroxylase (LmPH) genes and pollutant-degrading capacity of these strains were characterized and compared. Their 16S rRNA gene sequences were identical, but the genomic structures differed, as demonstrated by distinct enterobacterial repetitive intergenic consensus sequence PCR profiles with a similarity of less than 0.65. The analysis of degradation of coking wastewater by these strains showed that most of the main organic pollutants-phenol, methylphenol, and indole, but not quinoline-were degraded under aerobic conditions. These strains contained different LmPHs genes and showed different phenol degradation rates (Q4 > 3-35 > Q20-C). The presence of a microdiversity of Thauera spp. implies the existence of various finely differentiated niches in the industrial WWTP. The capacity of the Thauera strains to degrade a wide spectrum of aromatic compounds suggests their potential in bioremediation applications targeting aromatic pollutant-containing wastewater.

Original languageEnglish (US)
Pages (from-to)927-934
Number of pages8
JournalJournal of Industrial Microbiology and Biotechnology
Volume37
Issue number9
DOIs
StatePublished - Sep 1 2010
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Bioengineering
  • Applied Microbiology and Biotechnology

Keywords

  • Aromatic compound
  • Degradation
  • Microdiversity
  • Thauera

Fingerprint Dive into the research topics of 'Versatile aromatic compound-degrading capacity and microdiversity of Thauera strains isolated from a coking wastewater treatment bioreactor'. Together they form a unique fingerprint.

  • Cite this