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Appl Environ Microbiol. 1989 December; 55(12): 3247-3249

Isolation of microorganisms capable of degrading isoquinoline under aerobic conditions.

J Aislabie, S Rothenburger and R M Atlas

Department of Biology, University of Louisville, Kentucky 40292.

ABSTRACT

Isoquinoline-degrading microbial cultures were isolated from oil- and creosote-contaminated soils. The establishment of initial enrichment cultures required the use of emulsified isoquinoline. Once growth on isoquinoline was established, isoquinoline emulsification was no longer required for utilization of isoquinoline as the sole source of carbon and nitrogen by these cultures. An isoquinoline-degrading Acinetobacter strain was isolated from one of the enrichment cultures. The degradation of isoquinoline was accompanied by the accumulation of a red cell-associated pigment and of 1-hydroxyisoquinoline, which was further degraded to unknown intermediary ring-cleavage products and carbon dioxide.

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Appl Environ Microbiol. 1989 December; 55(12): 3247-3249