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INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY logo

Volume 61, Issue 8

gen. nov., sp. nov., a cryptoendolithic micro-organism from Antarctic white rock Free

Abstract

A Gram-negative, non-spore-forming, ovoid to rod-shaped aerobic or microaerobic bacterium, strain 262-8, was isolated from a cavity within white rock collected in Antarctica. Strain 262-8 grew at 5–30 °C (optimum 25 °C), at pH 6–8 (optimum approximately pH 7) and with 0.1–2.0 % (w/v) NaCl (optimum 0.5 % NaCl). The addition of tryptone or yeast extract was essential for growth. Strain 262-8 was able to utilize organic compounds such as ribose, pyruvate and succinate in the presence of a low concentration of tryptone. Ubiquinone 10 was the major respiratory quinone. The major fatty acids were C, C and C. The G+C content of the genomic DNA was 69.8 mol%. Comparative analyses of 16S rRNA gene sequences and physiological characteristics indicated that strain 262-8 was a phylogenetically novel bacterium that should be classified in a new genus of the family , for which the name gen. nov., sp. nov. is proposed. The type strain of the type species is 262-8 ( = JCM 16422 = ATCC BAA-1906).

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Funding
This study was supported by the:
  • JSPS KAKENHI (Award 19205022)
© 2011 IUMS
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2011-08-01
2024-04-26
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Constrictibacter antarcticus gen. nov., sp. nov., a cryptoendolithic micro-organism from Antarctic white rock
Int J Syst Evol Microbiol 61, 1973 (2011); https://doi.org/10.1099/ijs.0.026625-0
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