1887

Abstract

An aerobic actinomycete isolated from a type of periodontal disease in hamsters showed a characteristic filament/diphtheroid dimorphism. Incubation under carbon dioxide favoured development of the diphtheroid form, whereas aerobic incubation favoured the mycelial form. Iron depletion also induced filament formation. Although magnesium concentration directly affected the rate and amount of growth, no effect on morphology was observed. Critical concentrations of streptomycin sulphate and chloramphenicol also induced mycelium formation.

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/content/journal/micro/10.1099/00221287-38-1-125
1965-01-01
2021-07-24
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