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Biotechnology Letters

, Volume 32, Issue 11, pp 1673–1678 | Cite as

Cyanobactericidal effect of Rhodococcus sp. isolated from eutrophic lake on Microcystis sp

  • Young-Ki Lee
  • Chi-Yong Ahn
  • Hee-Sik Kim
  • Hee-Mock Oh
Original Research Paper

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.

Keywords

Algicide Bloom Cyanobacteria Microcystis Rhodococcus 

Notes

Acknowledgements

This work was supported by grants from the Korea Research Institute of Bioscience and Biotechnology Research Initiative Program, the MEST/NRF to the Environment Biotechnology National Core Research Center (grant #: 20090091489), and to the Center for Aquatic Ecosystem Restoration, Eco-STAR project from the Ministry of Environment, Republic of Korea.

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Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  • Young-Ki Lee
    • 1
  • Chi-Yong Ahn
    • 1
  • Hee-Sik Kim
    • 1
  • Hee-Mock Oh
    • 1
  1. 1.Environmental Biotechnology Research CenterKorea Research Institute of Bioscience and Biotechnology (KRIBB)DaejeonKorea

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