Journal of Microbiology

1 "Moracella sp."

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Isolation of a Bacterium That Inhibits the Growth of Anabaena cylindrica: Kim, Chul Ho , Leem, Mi Hyea , Choi, Yong Keel; J. Microbiol. 1997;35(4):284-289.

Abstract: A Gram (-), rod-shaped bacterium 2.3~2.8×0.45㎛ in size which exhibited growth-inhibiting effects against a cyanobacterium (Anabaena cylindrica) was isolated from Daechung Dam Reservoir. This isolate was identified as Moraxella sp. and designated Moracella sp. CK-1. Hollow zones formed around bacterial colonies on the cyanobacterial lawn. In a mixed-culture of A. cylindrica and the isolate, each microorganism grew inverse-proportionally, and the cyanobacterial vegetative cells completely disappeared within 24 hours. On treatment with Moraxella sp. CK-1, cell walls of A. cylindrica disappeared, but sheathes remained in a more electron dense form. The unit membrane such as thylakoidal membrane was stable to bacterial lysing activity. This bacterium showed a broad action spectrum against cyanobacteria. The growth-inhibiting activity of Moracella sp. CK-1 against A. cylindrica is believed to be performed through the excretion of active substances.

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