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Cultured bacterial diversity and the impact of human activity in cryoconites samples from Alps

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Title
Cultured bacterial diversity and the impact of human activity in cryoconites samples from Alps
Other Titles
Alps의 cryoconite 시료에서 배양된 미생물의 다양성과 인간 활동의 영향
Authors
Lee, Hong Kum
Hong, Soon Gyu
Lee, Yung Mi
Franz Schinner
Rosa Margesin
Kim, Eun Hye
Jung, Jee Ah
Kim, So yeon
Keywords
Alps; Bacterial diversity; Cryoconite; Human impact
Issue Date
2010
Citation
Lee, Hong Kum, et al. 2010. Cultured bacterial diversity and the impact of human activity in cryoconites samples from Alps. 한국미생물학회. 한국미생물학회. 2010.05.06~.
Abstract
The relationship between human impact and the diversity of culturable bacteria in cryoconite samples from Alps was investigated by comparing physiological characteristics and phylogenetic analysis of 260 isolates. The ratio of isolates which grew only below 20
C was higher in samples with no or weak human impact compared to that in samples with strong human impact. In contrast, the ratio of isolates which grew as high as 37
C were higher in strongly affected samples. In most cases, protease activity at 10
C and 20
C seemed similar, but the ratio of isolates with higher protease activity at 10C than 20
C was higher when human impact were strong. In contrast, correlation of lipase activity with human impact was not evident. Isolates were included in the Actinobacteria, Bacteroidetes, Firmicutes, α-proteobacteria, ß-proteobacteria, and γ-proteobacteria and diversity was affected by human impact. Isolates included in the Arthrobacter, Bacillus, and Pseudorhodobacter were detected only from samples with no human impact while isolates included in the Enterobacteraceae, Oxalobacteraceae, Pedobacter, Rhodococcus, and Sphingomonas were detected from samples with human impact. These results suggested that human impact may influence on the composition of microbial communities and physiological characteristics of bacteria in cryoconites.
URI
http://repository.kopri.re.kr/handle/201206/8041
Conference Name
한국미생물학회
Conference Place
한국미생물학회
Conference Date
2010.05.06~
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