Korean Journal of Environmental Biology (환경생물)

Korean Society of Environmental Biology (한국환경생물학회)
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Algicidal Effect of Immobilized Bacteria against S. hantzschii in Microcosm

살조세균 Pseudomonas fluorescens HYK0210-SK09의 두 가지 담체 포집능과 이를 이용한 microcosm에서 Stephanodiscus hantzschii (Bacillariophyceae)의 살조능 연구

  • 정승원 (한양대학교 자연과학대학 생명과학과) ;
  • 김영옥 (한국해양연구원 부설 남해연구소 남해특성연구부) ;
  • 한명수 (한양대학교 자연과학대학 생명과학과)
  • Received : 2009.05.07
  • Accepted : 2009.07.01
  • Published : 2009.08.31
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Abstract

To assess the algicidal effect of a bacterium, Pseudomonas fluorescens HYK0210-SK09 (SK09), attached to activated carbon polyvinyl alcohol (ACPA) and cellulose sponge (CS) carriers against Stephanodiscus hantzschii, the present study was carried out in an indoor-microcosm. As comparing immobilization effects of two carriers, the ACPA carrier allowed for higher packing cell density of SK09 compared to the CS carrier. In the microcosm, immobilized SK09 cells were applied to control S. hantzschii blooms. Immobilized SK09 cells exhibited a species-specific activity towards the diatom, showing an algicidal effect up to 72% attached by ACPA carriers and to 51% attached by CS carriers. In particular, a level of conductivity treated with ACPA carriers was decreased than that of CS carriers. The present study clearly demonstrates that ACPA-immobilized SK09 cells could effectively control S. hantzschii blooms and improve water quality in the microcosm ecosystem.

두 가지 다른 기질의 담체를 이용하여 살조세균 Pseudomonas fluorescens HYK0210-SK09의 포집율과 microcosm에서 Stephanodiscus hantzschii의 살조능을 파악하였다. Active carbon polyvinyl alcohol (ACPA)담체가 cellulose sponge (CS)담체보다 SK09를 높게 포집하였다. 이를 이용한 microcosm에서 ACPA담체가 CS담체보다 S. hantzschii의 살조능이 높았으며 지속적이었다. 특히 ACPA담체에서는 낮은 전기전도도를 나타내어 S. hantzs-chii 분해에 따른 용출된 이온들을 흡수하고 있음을 판단할 수 있었다. 따라서 ACPA담체를 이용한 유해조류 제어는 지속적 제어와 함께 생태계의 교란을 최소화할 것으로 판단된다.

Keywords

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