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Biotypes of Proteus rettgeri.

J L Penner, N A Hinton, J Hennessy

    Journal of Clinical Microbiology
    |February 1, 1975
    PubMed
    Summary
    This summary is machine-generated.

    Proteus rettgeri metabolic profiling revealed two distinct groups based on polyhydric alcohol utilization. Most isolates utilized adonitol and D-arabitol, while a smaller group did not, showing resemblance to Providencia stuartii.

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    Area of Science:

    • Microbiology
    • Bacterial Taxonomy
    • Metabolic Profiling

    Background:

    • Proteus rettgeri is a bacterial species with established biochemical characteristics.
    • Understanding metabolic diversity within P. rettgeri is crucial for accurate identification and phylogenetic analysis.

    Purpose of the Study:

    • To biochemically characterize a large collection of Proteus rettgeri isolates.
    • To identify distinct metabolic groups within P. rettgeri based on substrate utilization.
    • To investigate potential metabolic intermediates between P. rettgeri and related genera.

    Main Methods:

    • Biochemical testing of 729 Proteus rettgeri isolates.
    • Analysis of core characteristics including phenylalanine deamination, indole production, citrate utilization, and acid production from various carbohydrates.

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  • Further differentiation using additional substrates like polyhydric alcohols (adonitol, D-arabitol, meso-erythritol) and other sugars.

    • Main Results:

    • A high degree of homogeneity was observed for core characteristics, with 674 out of 729 isolates showing identical reactions.
    • Two distinct metabolic groups were identified based on the utilization of adonitol, D-arabitol, and meso-erythritol.
    • One group utilized these polyhydric alcohols, while the other did not, exhibiting similarities to Providencia stuartii strains.

    Conclusions:

    • Proteus rettgeri exhibits significant metabolic heterogeneity, particularly in polyhydric alcohol metabolism.
    • The identified metabolic groups suggest potential evolutionary links or intermediate forms between P. rettgeri and Providencia species.
    • Further research into the genetic basis of these metabolic differences is warranted.