Isolation and characterization of a Rhodococcus strain able to degrade 2-fluorophenol

Anouk F. Duque, Syed A. Hasan, Vânia S. Bessa, Maria F. Carvalho, Ghufrana Samin, Dick B. Janssen, Paula M. L. Castro*

*Autor correspondente para este trabalho

Resultado de pesquisarevisão de pares

27 Citações (Scopus)

Resumo

A pure bacterial culture able to utilize 2- fluorophenol (2-FP) as sole carbon and energy source was isolated by selective enrichment from sediments collected from a contaminated site in Northern Portugal. 16S rRNA gene analysis showed that the organism (strain FP1) belongs to the genus Rhodococcus. When grown aerobically on 2-FP, growth kinetics of strain FP1 followed the Luong model. An inhibitory effect of increasing 2-FP concentrations was observed with no growth occurring at 2- FP levels higher than ca. 4 mM. Rhodococcus strain FP1 was able to degrade a range of other organofluorine compounds, including 2-fluorobenzoate, 3-fluorobenzoate, 4-fluorobenzoate, 3-fluorophenol, 4-fluorophenol, 3- fluorocatechol, and 4-fluorocatechol, as well as chlorinated compounds such as 2-chlorophenol and 4-chlorophenol. Experiments with cell-free extracts and partially purified enzymes indicated that the first step of 2-fluorophenol metabolism was conversion to 3-fluorocatechol, suggesting an unusual pathway for fluoroaromatic metabolism. To our knowledge, this is the first time that utilization of 2-FP as a growth substrate by a pure bacterial culture is reported.

Idioma originalEnglish
Páginas (de-até)511-520
Número de páginas10
RevistaApplied Microbiology and Biotechnology
Volume95
Número de emissão2
DOIs
Estado da publicaçãoPublished - jul 2012

Impressão digital

Mergulhe nos tópicos de investigação de “Isolation and characterization of a Rhodococcus strain able to degrade 2-fluorophenol“. Em conjunto formam uma impressão digital única.

Citação