Biodegradation of BTEX mixture by Pseudomonas putida YNS1 isolated from oil-contaminated soil.
The presence of mixed contaminants, such as BTEX (benzene, toluene, ethylbenzene and xylene isomers) can affect the biodegradation, fate and environmental impacts of each compound. To understand the influence of interactions among BTEX compounds on their biodegradation, four bacteria were isolated from oil-contaminated soil and assayed for BTEX biodegradation in vitro. The isolate exhibiting maximum biodegradation was identified as Pseudomonas putida based on the 16S rDNA sequence. The biodegradation of the BTEX compounds was greatly influenced by pH, temperature, and salinity. Substrate mixture studies (binary, tertiary and quaternary) revealed that the presence of toluene increased the biodegradation rate of benzene, ethylbenzene, and xylene.
Division of Biotechnology, Advanced Institute of Environment and Bioscience, College of Environmental and Bioresource Sciences, Chonbuk National University, Iksan 570-752, Korea.
Youngnam
Y
You
Jaehong
J
Shim
Choa-Hyoung
CH
Cho
Moon-Hee
MH
Ryu
Patrick J
PJ
Shea
Seralathan
S
Kamala-Kannan
Jong-Chan
JC
Chae
Byung-Taek
BT
Oh
D001554:Benzene / Q000737:chemistry / Q000378:metabolism; D001555:Benzene Derivatives / Q000737:chemistry / Q000378:metabolism; D001673:Biodegradation, Environmental; D004275:DNA, Ribosomal / Q000378:metabolism; D006863:Hydrogen-Ion Concentration; D016958:Pseudomonas putida / Q000145:classification / Q000302:isolation & purification / Q000378:metabolism*; D012988:Soil Microbiology; D012989:Soil Pollutants / Q000378:metabolism*; D013696:Temperature; D014050:Toluene / Q000737:chemistry / Q000378:metabolism; D014992:Xylenes / Q000737:chemistry / Q000378:metabolism
D001555:Benzene Derivatives; D004275:DNA, Ribosomal; D012989:Soil Pollutants; D014992:Xylenes; D014050:Toluene; D001554:Benzene; C004912:ethylbenzene