Growth Inhibition of Various Organisms by a Violet Pigment, Nostocine A, Produced by<i>Nostoc spongiaeforme</i>

Abstract

A freshwater filamentous cyanobacterium, Nostoc spongiaeforme TISTR 8169, produced and excreted a violet pigment, named nostocine A, in the culture medium. Nostocine A inhibited the growth of some typical strains of microorganisms, algae, cultured plants, and established animal cell lines.