Subscribe Now Subscribe Today
Science Alert
 
Blue
   
Curve Top
Biotechnology
  Year: 2008 | Volume: 7 | Issue: 4 | Page No.: 630-640
DOI: 10.3923/biotech.2008.630.640
 
Facebook Twitter Digg Reddit Linkedin StumbleUpon E-mail

Biodegradation of Monocyclic Aromatic Hydrocarbons by a Newly Isolated Pseudomonas strain

Ranya A. Amer, Mahmoud M. Nasier and Ehab R. El-Helow

Abstract:
An aromatic hydrocarbon utilizing bacterium was isolated from Egyptian sewage treatment plant, it was identified as Pseudomonas sp. strain H12 and it showed 98% similarity to 16S rDNA genes of Pseudomonas meridiana and Pseudomonas antarctica. It has been never reported that these strains have any relation to hydrocarbon degradation. On the other hand, the isolated Pseudomonas sp. strain H12 has the ability to remove 85-90% of BTXHB mixture (benzene, toluene, xylene, hexyl-benzene and butyl-benzene) within 24 h. The results strongly suggest that the experimental bacterium has a TOL like-plasmid and carries tmoA, xylM and xylA involved in the expression of catechol-forming mono-oxygenases and xylE1 which expresses a catechol dioxygenase. Thus, the catabolic pathway of an aromatic hydrocarbon by Pseudomonas sp. H12 is possibly initiated by only the activity of a mono-oxygenase system followed by a di- oxygenase catechol ring cleavage reaction.
PDF Fulltext XML References Citation Report Citation
 RELATED ARTICLES:
  •    Molecular Identification by 16S rDNA Sequence of a Novel Bacterium Capable of Degrading Trichloroethylene
  •    Enhanced Biodegradation of Oil Products by Some Microbial Isolate Supplemented with Heavy Metals
  •    Bioenergetics of Binary Mixed Culture of Pseudomonas aeruginosa and Pseudomonas fluorescence Growth on Phenol in Aerobic Chemostat Culture
  •    Molecular Phylogeny of a Novel Trichloroethylene Degrading Gene of Bacillus cereus 2479
How to cite this article:

Ranya A. Amer, Mahmoud M. Nasier and Ehab R. El-Helow, 2008. Biodegradation of Monocyclic Aromatic Hydrocarbons by a Newly Isolated Pseudomonas strain. Biotechnology, 7: 630-640.

DOI: 10.3923/biotech.2008.630.640

URL: https://scialert.net/abstract/?doi=biotech.2008.630.640

COMMENT ON THIS PAPER
 
 
 

 

 
 
 
 
 
 
 
 
 

 
 
 
 
 
 
 

Curve Bottom