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Physiological studies on Vitreoscilla stercoraria.

D C Mayfield, A S Kester

    Journal of Bacteriology
    |December 1, 1972
    PubMed
    Summary

    Vitreoscilla stercoraria ATCC 15218 requires specific nutrients like biotin and thiamine for growth. Its physiological characteristics include an optimal pH of 7.5-7.7 and distinct growth phases in shake cultures.

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    Nutrition of Vitreoscilla stercoraria.

    Canadian journal of microbiology·1975

    Area of Science:

    • Microbiology
    • Bacteriology

    Background:

    • Vitreoscilla stercoraria is a filamentous bacterium with limited documented physiological data.
    • Understanding its growth requirements is crucial for further research and potential applications.

    Purpose of the Study:

    • To determine the optimal pH for Vitreoscilla stercoraria growth.
    • To characterize the growth curve of Vitreoscilla stercoraria in shake cultures.
    • To identify essential nutritional requirements for Vitreoscilla stercoraria.

    Main Methods:

    • Growth experiments were conducted to determine optimal pH and growth curve characteristics.
    • Nutritional studies involved testing various media components to identify auxotrophic requirements.

    Main Results:

    • The optimal pH range for Vitreoscilla stercoraria ATCC 15218 was determined to be 7.5 to 7.7.
    • Growth in shake cultures exhibited two phases: increased trichome number up to 15 hours, followed by increased trichome length.
    • The organism was found to be auxotrophic for biotin, thiamine, and l-arginine, and dependent on protein hydrolysates or amino acid mixtures for growth.

    Conclusions:

    • Vitreoscilla stercoraria ATCC 15218 has specific physiological and nutritional requirements.
    • The bacterium appears to be an obligate amino acid utilizer, highlighting its unique metabolic capabilities.

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