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한국환경생물학회 / v.22, no.1, 2004년, pp.184-191 
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( Enzyme Profiles of Alga-Lytic Bacterial Strain AK-13 Related with Elimination of Cyanobacterium Anabaena cylindrica ) |
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| 초 록 |
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| To investigate bacteria with algalytic activities against Anabaena cylindrica when water blooming occurs and to study enzyme profiles associated with alga-lytic activity, various bacterial strains were isolated from surface waters and sediments in eutrophic lakes or reservoirs in Korea. Among 178 isolates, only nine isolates exhibited lytic abilities against A cylindrica on the agar plates, and then the isolate AK-13 was selected as the strongest in lysing the cyanobacterium A. cytindrica. The strain AK-13 was characterized and identified as Sinorhizobium sp. based on fatty acid methyl ether profiles and 16S rDNA sequence. According to the results of the enzyme assays, in the strain An-13 of Sinorhizobium sp., alginase, amylase, proteinase (caseinase and gelatinase), carboxymethyl-cellulase (CMCase), laminarinase, and lipase was produced, namely CMCase, laminarinase and protease were highly active. None of glycosidase was produced. Therefore, enzyme systems of Sinorhizobium sp. AK-13 were very complex to degrade cell walls of A. cylindrica. The peptidoglycans of A. cylindrica mat be hydrolyzed and metabolized to a range of easily utilizable monosaccharides or other low molecular weight organic substances by Sinorhizobium sp. AK-13. |
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| 키워드 |
| alga-lytic bacteria;Sinorhizobium sp.;hydrolytic-enzymes;Anabaena cylindrica; |
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환경생물 / v.22, no.1, 2004년, pp.184-191
한국환경생물학회
ISSN : 1226-9999
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200411922293316)
언어 : 영어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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