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Int J Syst Evol Microbiol 58 (2008), 221-225; DOI  10.1099/ijs.0.65092-0
© 2008 International Union of Microbiological Societies

Alicyclobacillus pohliae sp. nov., a thermophilic, endospore-forming bacterium isolated from geothermal soil of the north-west slope of Mount Melbourne (Antarctica)

Tatiana Imperio1, Carlo Viti2 and Laura Marri1

1 Dipartimento di Biologia Evolutiva, Università degli Studi di Siena, Via A. Moro 2, 53100 Siena, Italy
2 Dipartimento di Biotecnologie Agrarie, Sezione di Microbiologia, Università degli Studi di Firenze, Piazzale delle Cascine 24, 50144 Firenze, Italy

Correspondence
Laura Marri
marri{at}unisi.it

Gram-positive, rod-shaped, endospore-forming, thermophilic bacteria were isolated from a geothermal soil collected on the north-west slope of Mount Melbourne in Antarctica. They grew aerobically at 42–60 °C (optimum 55 °C) and at pH 4.5–7.5 (optimum pH 5.5). Phylogenetic analysis of 16S rRNA gene sequences showed that these isolates were related most closely to the type strain of Alicyclobacillus pomorum (91 % similarity). Growth occurred in the presence of ferrous iron at micromolar concentrations and acid was produced from various sugars. Iso-branched fatty acids C15 : 0 (45.56 %) and C17 : 0 (35.81 %) were the most abundant cellular fatty acids. The DNA G+C content was 55.1 mol%. On the basis of phenotypic and phylogenetic characteristics, it is concluded that these strains represent a novel species of the genus Alicyclobacillus, for which the name Alicyclobacillus pohliae sp. nov. is proposed. The type strain is MP4T (=CIP 109385T =NCIMB 14276T).

The GenBank/EMBL/DDBJ accession numbers for the 16S rRNA gene sequences of strains MP1, MP2, MP3 and MP4T are AJ607429, AJ607430, AJ607431 and AJ564766, respectively.




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C.-Y. Jiang, Y. Liu, Y.-Y. Liu, X.-Y. You, X. Guo, and S.-J. Liu
Alicyclobacillus ferrooxydans sp. nov., a ferrous-oxidizing bacterium from solfataric soil
Int J Syst Evol Microbiol, December 1, 2008; 58(12): 2898 - 2903.
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