Calcium ion regulates aerial mycelium formation in actinomycetes

Abstract

Ca2+ induced the formation of aerial mycelia in Streptomyces ambofaciens. Its effect was inhibited by ethylene glycol bis(β-aminoethyl ether)-N, N, N′, N′-tetraacetic acid, a Ca2+ specific chelating agent. A survey of 36 strains of actinomycetes showed that Ca2+ regulated aerial mycelium formation in 21 (58%) of them. The Ca2+ concentration required for aerial mycelium formation in the culture medium ranged from 0.1 to 1.5 mM. © 1989, JAPAN ANTIBIOTICS RESEARCH ASSOCIATION. All rights reserved.