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NTIS 바로가기Korean journal of microbiology = 미생물학회지, v.50 no.4, 2014년, pp.376 - 380
Marine beach sands with bacterial pathogens may cause increased outcomes of illness among beachgoers in summer. In this study, pyrosequencing of 16S ribosomal DNAs extracted from 12 beach sands was performed to understand how the environmental factors of wastewaters or human wastes affected the dist...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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해수보다, 해변 모래에서 세균의 생존율이 높아지는 이유는? | 지표미생물로 사용하는 장내 세균이나 피부에 있는 세균이 바다의 해수에 유입되면 삼투압, 온도, pH, 부족한 영양원 등의원인 때문에 생존율이 급격히 감소하나, 모래에서는 생물막 (biofilm)을 만들기 때문에 햇빛에 의한 유해자외선으로부터 보호를 받고, 온도변화에도 덜 민감하게 되어서 해수에 존재할 때보다 세균의 생존율이 더 높아진다(Davies et al., 1995; Halliday and Gast, 2011). | |
영덕군과 포항시의 해변모래에 서식하는 미생물 분포는 생활 하수, 쓰레기, 담수 환경 조건에 따라 어떻게 변하였는가? | 해수 부근의 청결한 모래에는 Acidobacteria, 담수 부근의 모래에는 Proteobacteria, 생활하수 부근의 모래에는 Cyanobacteria, 해변공원 부근의 모래에는 Bacteroidetes 그룹이 20–90% 정도로 높게 분포하였고, 생활하수가 해수와 합해지는 해변모래에서는 Actinobacteria, Chlorobi, Deferribacteres, Deinococcus-thermus, Firmicutes, Gemmatimonadetes, Nitrospirae, Verrucomicrobia 그룹이 1–5% 정도로 낮게 분포하였다. | |
해안에서 검출되는 병원성 미생물은? | , 2005; Halliday and Gast, 2011). 해안에서 검출되는 병원성 미생물로는 식중독을 유발하는 세균(Campylobacter jejuni, Aeromonas hydrophila, Salmonella spp., Clostidium perfringens)이나 상처 난 피부를 통하여 인체에 유입될 수 있는 세균(Staphylococcus aureus, Pseudomonas aeruginosa, Vibrio parahaemolyticus, Vibrio harveyi)과 각종 바이러스(adenovirus, norovirus, astrovirus, enterovirus) 등이 있으며(Ghinsberg et al., 1999; Goodwin et al. |
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Colford, J.M. Jr., Schiff, K.C., Griffith, J.F., Yau, V., Arnold, B.F., Wright, C.C., Gruber, J.S., Wade, T.J., Burns, S., Hayes, J., and et al. 2012. Using rapid indicators for Enterococcus to assess the risk of illness after exposure to urban runoff contaminated marine water. Water Res. 46, 2176-2186.
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Davies, C.M., Long, J.A., Donald, M., and Ashbolt, N.J. 1995. Survival of fecal microorganisms in marine and freshwater sediments. Appl. Environ. Microbiol. 61, 1888-1896.
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Halliday, E., McLellan, S.L., Amaral-Zettler, L.A., Sogin, M.L., and Gast, R.J. 2014. Comparison of bacterial communities in sands and water at beaches with bacterial water quality violations. PLoS One 9, e90815.
Heaney, C.D., Sams, E., Wing, S., Marshall, S., Brenner, K., Dufour, A.P., and Wade, T.J. 2009. Contact with beach sand among beachgoers and risk of illness. Am. J. Epidemiol. 170, 164-172.
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Martins, J., Peixe, L., and Vasconcelos, V.M. 2011. Unraveling cyanobacteria ecology in wastewater treatment plants (WWTP). Microb. Ecol. 62, 241-256.
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