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한국하천호수학회 / v.31, no.1, 1998년, pp.32-32 
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수생관속식물이 우점하는 문천지에서의 ${eta}-glucosidase$, cellobiohydrolase, alkaline phosphatase 활성도변화
( The variations of ${eta}-Glucosidase$, Cellobiohydrolase and Alkaline Phosphatase in Lake Moon-chon with dense macrophytes beds ) |
| 이영옥;김효원; 대구대학교 생물학과;대구대학교 생물학과;
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| 초 록 |
| 침수성 수생관속식물인 말즘(Potamogeton crispus L.)이 우점종으로 서식하는 문천지에서 $MUF-{eta}-glucoside$, MUF-cellobiopyranoside와 MUF-phosphate를 사용하여 부유세균과 말즘에 부착한 세균의 ${eta}-glucosidase$, cellobiohydrolase와 alkaline phosphatase활성도를 측정하였다. 그 결과, 부착세균의 ${eta}-glucosidase$활성도는 부유세균의 활성도가 증가할 때 1달간의 시차를 두고 증간하는 양상을 보였으며 부착세균의 cellobiohydrolase활성도는 부유세균의 그것보다 단연 높게 나타났다. 반면에 부착세균의 phosphatase 활성도는 96년 10월을 제외하고는 부유세균에 비해 낮았다. 이는 수초가 밀집해 있는 수역에서는 수초가 그 수계생태계의 중요한 탄수화물 영양원으로 작용하고 있음을 시사해 준다. |
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| In order to compare the enzyme activity of bacterioplankton with that of epiphytic bacteria on submerged macrophytes (Potamogeton crispus L.) ${eta}-glucosidase$, cellobiohydrolase and alkaline phosphatase activities in Lake Moon-chon were measured, based on an increase in fluorescence as the nonfluorescent methylumbelliferyl substrates were enzymatically hydrolyzed, leading to the highly fluorescent molecule 4-methylumbelliferone (MUF). At the same time, total number of bacterioplankton and that of epiphytic bacteria were determined. The peak of ${eta}-glucosidase$ of epiphytic bacteria was recorded with the 1-month time interval after that of bacterioplankton, and cellobiohydrolase activities of epiphytic bacteria were significantly higher than those of bacterioplankton. Whereas the alkaline phosphatase activities of epiphytic bacteria were low except October, at time of macrophytes decomposition, their activities of bacterioplankton were peaked in correlation to algae bloom and macrophytes decomposition. These indicate that the beds of submerged macrophytes in Lake Moon-chon probably playa major role as nutrient source, especially carbohydrate-pool for their recycling. |
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| 키워드 |
| Alkaline phosphatase;bacterioplankton;Cellobiohydrolase;epiphytic bacteria;${eta}-glucosidase$; |
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한국하천호수학회지 / v.31, no.1, 1998년, pp.32-32
한국하천호수학회
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199810102436037)
언어 : 한국어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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