Biocontrol Science
Online ISSN : 1884-0205
Print ISSN : 1342-4815
ISSN-L : 1342-4815
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Comprehensive Analysis of an Antarctic Bacterial Community with the Adaptability of Growth at Higher Temperatures than those in Antarctica
SHOKO HOSOI-TANABEHONGYAN ZHANGDAOCHEN ZHUSHINICHI NAGATASYUHEI BANSATOSHI IMURA
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2010 Volume 15 Issue 2 Pages 57-62

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Abstract
To investigate the adaptability to higher temperatures of Antarctic microorganisms persisting in low temperature conditions for a long time, Antarctic lake samples were incubated in several selection media at 25°C and 30°C. The microorganisms did not grow at 30°C; however, some of them grew at 25°C, indicating that the bacteria in Antarctic have the ability to grow at a wide range of temperatures. Total DNA was extracted from these microorganisms and amplified using the bacteria-universal primers. The amplified fragments were cloned, and randomly selected 48 clones were sequenced. The sequenced clones showed high similarity to the α-subdivision of the Proteobacteria with specific affinity to the genus Agrobacterium, Caulobacter and Brevundimonas, the ß-subdivision of Proteobacteria with specific affinity to the genus Cupriavidus, and Bacillus of the phylum Firmicutes. These results showed the presence of universal genera, suggesting that the bacteria in the Antarctic lake were not specific to this environment.
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© 2010 The Society for Antibacterial and Antifungal Agents, Japan
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