유전자 기법을 이용한 북한강 수역 Anabaena strain의 동정 및 Geosmin 생산 잠재성 분석

초록

This study was conducted to identify the bloom-forming Anabaena strains with two phenotypes(straight-type and coil-type) isolated from North Han River (Sambong-ri Joam-myun) using 16S rDNA sequence. The odor material producing potential was also examined using the geosmin-synthesizing gene cluster. Despiteof striking morphological difference of the two stains, resembling A. circinalis and A. crassa species, thephylogenetic analysis using 16S rDNA identified the both strains as a single species of A. circinalis with highgenetic similarity (98%~100%). Also, two Anabaena strains showed to possess the geosmin-synthesizing genecluster, indicating that they are capable of producing the odor substance. This study is the first report thatprovides the direct evidence of geosmin production in the gene level by A. circinalis in Korea, and providesimportant basic information to identify the source alga of geosmin increase and its management in North HanRiver.

키워드