EFFECT OF SOME METAL IONS ON THE GROWTH OF HALOBACTERIUM CUTIRUBRUM

Halobacterium cutirubrum, H. salinarium, and H. halobium required at least 10 p.p.m. ferrous ions for maximal growth in aerated cultures. The growth of H. cutirubrum was stimulated by 0.05 p.p.m. manganous ions but addition of divalent zinc or calcium had no effect on the growth of this organism.