[Intracellular growth of actinophage in Actinomyces lividans culture lysogenic heat-induced mutant].

Intracellular growth of a thermoinduced prophage was caused by the action of elevated temperature on the lysogenic culture of Actinomyces lividans 66 (phiC31 ct22). The growth took place in the nucleoid where loose, oval or round, particles consisting of twisted NA threads were formed. Later, electron-dense phage heads, covered with a sheath, appeared, and still later--phage tails. Thermoinduction was terminated by lysis of the mycelium of the actinomycete when mature particles of the actinophage were liberated into a surrounding medium.