Aerobic biodegradation of nonylphenol by cold-adapted bacteria.
Three strains capable of mineralizing nonylphenol as sole carbon source were isolated from a sample of contaminated soil and characterized as two Pseudomonas spp. and a Stenotrophomonas sp. The two Pseudomonas spp. expressed characteristics typical of psychrophiles growing optimally of 10 degrees C and capable of growing at 0 degree C. The Stenotrophomonas sp. was more likely psychrotrophic because it had an optimal temperature between 14 and 22 degrees C although it was not capable of growing at 4 degrees C. At 14 degrees C, one of the Pseudomonas spp. exhibited the highest rate of degradation of nonylphenol (4.4 mg l-1 d-1), when compared with axenic or mixed cultures of the isolates. This study represents, to the best of our knowledge, the first reported case of cold-adapted microorganisms capable of mineralizing nonylphenol.
Soares
Ana
A
Biotechnology Department, Lund University, P.O. Box 124, S-221 00 Lund, Sweden.
Guieysse
Benoit
B
Delgado
Osvaldo
O
Mattiasson
Bo
B
D000222:Adaptation, Physiological / Q000502:physiology; D000332:Aerobiosis / Q000502:physiology; D001673:Biodegradation, Environmental; D002245:Carbon Dioxide / Q000378:metabolism; D002455:Cell Division / Q000502:physiology; D002478:Cells, Cultured; D003080:Cold Temperature; D010100:Oxygen / Q000378:metabolism; D010636:Phenols / Q000378:metabolism*; D020560:Proteobacteria / Q000166:cytology / Q000302:isolation & purification / Q000378:metabolism / Q000502:physiology*; D011549:Pseudomonas / Q000166:cytology / Q000302:isolation & purification / Q000378:metabolism / Q000502:physiology*; D012988:Soil Microbiology; D012989:Soil Pollutants / Q000378:metabolism; D013045:Species Specificity; D013696:Temperature
D010636:Phenols; D012989:Soil Pollutants; D002245:Carbon Dioxide; C025256:nonylphenol; D010100:Oxygen