Cyanobactericidal effect of <Emphasis Type="Italic">Rhodococcus</Emphasis> sp. isolated from eutrophic lake on <Emphasis Type="Italic">Microcystis</Emphasis> sp |
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Authors: | Young-Ki Lee Chi-Yong Ahn Hee-Sik Kim Hee-Mock Oh |
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Institution: | (1) Environmental Biotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 305-806, Korea; |
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Abstract: | A bacterium, which was observed in all cultivations of Microcystis sp., was isolated and designated as Rhodococcus sp. KWR2. The growth of bloom-forming cyanobacteria, including four strains of Microcystis aeruginosa and Anabaena variabilis, was suppressed by up to 75–88% by 2% (v/v) culture broth of KWR2 after 5 days. But KWR2 did not inhibit eukaryotic algae,
Chlorella vulgaris and Scenedesmus sp. An extracellular algicidal substance produced by KWR2 showed a cyanobactericidal activity of 94% and was water-soluble
with a molecular weight of lower than 8 kDa. |
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