Cyanobactericidal effect of Rhodococcus sp. isolated from eutrophic lake on Microcystis sp.
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.
Lee
Young-Ki
YK
Environmental Biotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-806, Korea.
Ahn
Chi-Yong
CY
Kim
Hee-Sik
HS
Oh
Hee-Mock
HM
D046870:Anabaena variabilis / Q000187:drug effects / Q000254:growth & development*; D000900:Anti-Bacterial Agents / Q000302:isolation & purification; D000898:Antibiosis; D048408:Chlorella vulgaris / Q000254:growth & development; D005618:Fresh Water / Q000382:microbiology*; D050296:Microbial Viability; D046931:Microcystis / Q000187:drug effects / Q000254:growth & development*; D012240:Rhodococcus / Q000254:growth & development / Q000302:isolation & purification / Q000378:metabolism / Q000502:physiology*; D044444:Scenedesmus / Q000254:growth & development
D000900:Anti-Bacterial Agents