Bacteriological Control of Cyanobacterial Bloom
Kim, C.H.(Jinju National University, Jinju, Republic of Korea)E-mail:[email protected] | Kwon, O.S.;Lee, J.A.(Inje University, Kimhae, Republic of Korea)
A Gram (-), rod-shaped bacterium in size of 1.3∼1.8 ×0.35 ㎛ inhibiting the growth of cyanobacterium (Ana-baena cylindrica) was isolated and designated NG-2 in this manuscript. This isolate showed positive reactions for catalase and oxidase, and optimal growth conditions of 35∼40℃ and pH 9.0. In a mixed-culture of A. cylindrica and the isolate, each microorganism grew inverse-proportionally, and the cyanobacterial vegetative cells almost completely disappeared within 24 hours. NG-2 lysed A. cylindrica only under light, which means that lytic activity of NG-2 was dependent on the photosynthetic activity of host.
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