title: Alicyclobacillus pohliae sp. nov., a thermophilic, endospore-forming bacterium isolated from geothermal soil of the north-west slope of Mount Melbourne (Antarctica).
abstract: 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 degrees C (optimum 55 degrees 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 C(15:0) (45.56%) and C(17:0) (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 MP4(T) (=CIP 109385(T) =NCIMB 14276(T)).
authors.affiliation: Dipartimento di Biologia Evolutiva, Università degli Studi di Siena, Via A. Moro 2, 53100 Siena, Italy.
authors.forename: Tatiana
authors.initials: T
authors.lastname: Imperio
authors.forename: Carlo
authors.initials: C
authors.lastname: Viti
authors.forename: Laura
authors.initials: L
authors.lastname: Marri
mesh_terms: D000864:Antarctic Regions; D015373:Bacterial Typing Techniques; D001482:Base Composition; D004269:DNA, Bacterial / Q000032:analysis; D005227:Fatty Acids / Q000032:analysis; D020459:Genes, rRNA; D016937:Gram-Positive Endospore-Forming Rods / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification* / Q000502:physiology; D006358:Hot Temperature; D008969:Molecular Sequence Data; D010641:Phenotype; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D017422:Sequence Analysis, DNA; D012988:Soil Microbiology; D013045:Species Specificity
chemical_list: D004269:DNA, Bacterial; D005227:Fatty Acids; D012336:RNA, Ribosomal, 16S