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Characterization of a Novel Alga-Lytic Bacterium, Acidovorax temperans AK-05, Isolated from an Eutrophic Lake for Degradation of Anabaena cylindrica  

Kim, Jeong-Dong (Department of Life Science, Hanyang University)
Han, Myung-Soo (Department of Life Science, Hanyang University)
Publication Information
Korean Journal of Ecology and Environment / v.37, no.2, 2004 , pp. 241-247 More about this Journal
Abstract
Isolation and identification of alga-lytic bacteria were carried out. Fifteen isolates of alga-lytic bacteria were screened by the double layer method using A. cylindrica NIES-19 as a sole nutrient and four isolates among them were compared with their alga-lytic activity. The isolate AK-05 exhibiting the highest alga-lytic activity was identified as Acidovorax temperans base on its 16S rDNA sequence. The culture supernatant of the isolate AK-05 was reliable for the alga-lytic. Alga-lytic activity assays of culture supernatant revealed that the major substances for alga-lytic activity were non-proteins and heat stable. The highest alga-Iytic activity was practical under alkaline conditions and at 25${\sim}$$30^{\circ}C$. It is indicating an advantage for the application of water blooms by cyanobacteria in eutrophic lakes where the pH is generally in alkaline region.
Keywords
alga-lytic bacteria; Acidovorax temperans; extracellular substances; algal blooms;
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