title: Emended descriptions of Geobacillus thermoleovorans and Geobacillus thermocatenulatus.
abstract: Nineteen thermophilic, aerobic, endospore-forming bacterial strains were subjected to 16S rRNA gene sequence analysis. Eight of these strains had been received as cultures of Geobacillus kaustophilus, G. lituanicus, G. stearothermophilus, 'G. thermoleovorans subsp. stromboliensis', G. vulcani, 'Bacillus caldolyticus', 'B. caldotenax' and 'B. caldovelox', but they showed close relationships with the type strain of G. thermoleovorans, as did two other strains received as G. thermoleovorans. All strains underwent further taxonomic analysis by API and other phenotypic tests and fatty acid methyl ester analysis, and selected strains were analysed for their polar lipids and for DNA relatedness. The 11 strains that formed the G. thermoleovorans 16S rRNA cluster also showed some phenotypic similarities, and DNA relatedness data support the reassignment of the strains received as G. kaustophilus, G. lituanicus, 'G. thermoleovorans subsp. stromboliensis', G. vulcani, 'B. caldolyticus', 'B. caldotenax' and 'B. caldovelox', and one of the G. stearothermophilus strains, as members of the species G. thermoleovorans. Four other strains received as G. kaustophilus were misnamed; two were identified as G. stearothermophilus and two appeared to be closely related to Anoxybacillus rupiensis. One strain received as G. stearothermophilus remained unidentified. On the basis of a single strain, Geobacillus thermocatenulatus was shown to represent a distinct species, but study of the type strain of Geobacillus gargensis showed this species to be a later heterotypic synonym of Geobacillus thermocatenulatus. Emended descriptions of Geobacillus thermoleovorans and Geobacillus thermocatenulatus are therefore presented.
authors.affiliation: Department of Biological and Biomedical Sciences, Glasgow Caledonian University, Cowcaddens Road, Glasgow, G4 0BA, UK.
authors.forename: Anna E
authors.initials: AE
authors.lastname: Dinsdale
authors.affiliation: Department of Biological and Biomedical Sciences, Glasgow Caledonian University, Cowcaddens Road, Glasgow, G4 0BA, UK.
authors.forename: Gillian
authors.initials: G
authors.lastname: Halket
authors.affiliation: Laboratory of Microbiology, Department of Biochemistry and Microbiology, Ghent University, K.L. Ledeganckstraat 35, B-9000 Ghent, Belgium.|Department of Applied Engineering Sciences, Laboratory of Biochemistry and Brewing, University College Ghent, Schoonmeersstraat 52, B-9000 Ghent, Belgium.
authors.forename: An
authors.initials: A
authors.lastname: Coorevits
authors.affiliation: Laboratory of Microbiology, Department of Biochemistry and Microbiology, Ghent University, K.L. Ledeganckstraat 35, B-9000 Ghent, Belgium.|Department of Applied Engineering Sciences, Laboratory of Biochemistry and Brewing, University College Ghent, Schoonmeersstraat 52, B-9000 Ghent, Belgium.
authors.forename: Anita
authors.initials: A
authors.lastname: Van Landschoot
authors.affiliation: Institut für Bakteriologie, Mykologie & Hygiene, Veterinärmedizinische Universität, Veterinärplatz 1, A-1210 Vienna, Austria.
authors.forename: Hans-Jürgen
authors.initials: HJ
authors.lastname: Busse
authors.affiliation: Laboratory of Microbiology, Department of Biochemistry and Microbiology, Ghent University, K.L. Ledeganckstraat 35, B-9000 Ghent, Belgium.
authors.forename: Paul
authors.initials: P
authors.lastname: De Vos
authors.affiliation: Department of Biological and Biomedical Sciences, Glasgow Caledonian University, Cowcaddens Road, Glasgow, G4 0BA, UK.
authors.forename: Niall A
authors.initials: NA
authors.lastname: Logan
mesh_terms: D004269:DNA, Bacterial / Q000235:genetics; D004275:DNA, Ribosomal / Q000235:genetics; D056506:Geobacillus / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification* / Q000378:metabolism; D008969:Molecular Sequence Data; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics
chemical_list: D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D012336:RNA, Ribosomal, 16S