Effect of concentrations of limiting substrates on the linear growth rates of Streptomyces levoris colonies.

The relationship between linear growth rates of S. levoris zone-forming colonies and concentrations of different limiting energy and carbon sources in the nutrient medium has been studied. A formula has been derived satisfactorily describing this relationship. The utilization of the substrates in the source of vegetative and reproductive processes as well as possible mechanisms controlling the periodicity in the life activities of streptomyces colonies are discussed.