Physiology and Morphology
S. griseus and its related strains have recently been shown to be alkaliphilic, i.e., they grow best at alkaline pH values. Although these organisms grow in a wide pH range (from 5 to 11), they show a growth optimum at pH 9. They produce grey spore masses and grey-yellow reverse pigments when they grow as colonies. The spores have smooth surfaces and are arranged as straight chains.
Read more about this topic: Streptomyces Griseus
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