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Appl Environ Microbiol. 1989 June; 55(6): 1578-1583

Evaluation of different approaches for identification of xenobiotic- degrading pseudomonads.

Institut für Mikrobiologie der Universität, Hannover, Federal Republic of Germany.

ABSTRACT

Different approaches were evaluated to identify aerobic, gram-negative, biodegradative isolates assumed to be pseudomonads. Quinone and polyamine analysis allowed rapid identification to the genus level, i.e., allocation of those isolates belonging to the Pseudomonas fluorescens complex which represents the phylogenetically defined core of the heterogeneous genus Pseudomonas. Subsequent studies concentrated only on these true pseudomonads. The multiple-test system API 20NE, determination of the moles percent G+C content, and polyacrylamide gel electrophoresis of soluble proteins aided in identification on the species level. Polyacrylamide gel electrophoresis of both soluble proteins and whole-cell lipopolysaccharides allowed recognition of identical strains and double isolates, which were confirmed by DNA-DNA hybridization.

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