The Respiration of a Thermophilic Actinomycete, Micromonospora vulgaris

SUMMARY: The respiration of Micromonospora vulgaris at 60 was studied by means of the Warburg technique. Various cultural methods and heat treatments were used to separate the different growth phases of this structurally complex organism. One- to two-day growths bearing aerial mycelium were most active. Spores were inactive. Vegetative mycelium which developed within 24 hr. in the Warburg vessels was active, but similar 1-day or older growth harvested from cultures proved to be inactive.