Degradation and induction specificity in actinomycetes that degrade p-nitrophenol.
We have isolated two soil bacteria (identified as Arthrobacter aurescens TW17 and Nocardia sp. strain TW2) capable of degrading p-nitrophenol (PNP) and numerous other phenolic compounds. A. aurescens TW17 contains a large plasmid which correlated with the PNP degradation phenotype. Degradation of PNP by A. aurescens TW17 was induced by preexposure to PNP, 4-nitrocatechol, 3-methyl-4-nitrophenol, or m-nitrophenol, whereas PNP degradation by Nocardia sp. strain TW2 was induced by PNP, 4-nitrocatechol, phenol, p-cresol, or m-nitrophenol. A. aurescens TW17 initially degraded PNP to hydroquinone and nitrite. Nocardia sp. strain TW2 initially converted PNP to hydroquinone or 4-nitrocatechol, depending upon the inducing compound.
Hanne
L F
LF
Department of Biology, California State University, Chico 95929-0515.
Kirk
L L
LL
Appel
S M
SM
Narayan
A D
AD
Bains
K K
KK
D001173:Arthrobacter / Q000187:drug effects / Q000235:genetics / Q000378:metabolism*; D001673:Biodegradation, Environmental / Q000187:drug effects; D002396:Catechols / Q000494:pharmacology; D003408:Cresols / Q000494:pharmacology; D015964:Gene Expression Regulation, Bacterial / Q000187:drug effects; D009596:Nitrophenols / Q000378:metabolism* / Q000494:pharmacology; D009615:Nocardia / Q000187:drug effects / Q000235:genetics / Q000378:metabolism*; D019800:Phenol; D010636:Phenols / Q000494:pharmacology; D012988:Soil Microbiology; D012989:Soil Pollutants / Q000378:metabolism / Q000494:pharmacology
D002396:Catechols; D003408:Cresols; D009596:Nitrophenols; D010636:Phenols; D012989:Soil Pollutants; C032538:4-cresol; D019800:Phenol; C001833:4-nitrocatechol; C049017:3-nitrophenol; C024836:4-nitrophenol