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The Characteristics of Toxin Production in the Korean Toxic Cyanobacteria  

Kim, Hwa-Bin (Han River Water Environment Research Center, National Institute of Environmental Research)
Park, Hae-Kyung (Water Environment Research Department, National Institute of Environmental Research)
Shin, Kyodong (Han River Water Environment Research Center, National Institute of Environmental Research)
Moon, Jeong-Suk (Han River Water Environment Research Center, National Institute of Environmental Research)
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To find out the toxin production characteristics of Korean harmful cyanobacteria, we isolated 14 cyanobacterial strains from Korean lakes and rivers and analyzed the kinds and cellular content of microcystins (MCYSTs) of cyanobacterial isolates using cultured biomass. And we measured the MCYSTs production by growth phase of two representative toxic strains, Microcystis aeruginosa (HG-015) and Anabaena planktonica (HG-012). Among seven cyanobacteral species, Microcystis wesenbergii showed the highest cellular MCYSTs content. MCYST-RR was the most dominant toxin reaching more than 85% of MCYSTs produced by isolated cyanbacterial strains. During the mass culture, Microcystis aeruginosa (HG-015) showed the highest yield and accumulation of MCYSTs in the exponential growth phase. However the cellular content of chlorophyll a and MCYSTs of Anabaena planktonica (HG-012) showed higher value in the stationary and early death phase than in the exponential growth phase. Our results suggest that control and removal of harmful cyanobacterial bloom before exponential growth phase may be effective to prevent health risk of cyanobacterial toxins in the drinking water sources.
Anabaena; Cyanobacteria; Microcystins; Microcystis;
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Times Cited By KSCI : 1  (Citation Analysis)
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