title: Ornithinibacillus gen. nov., with the species Ornithinibacillus bavariensis sp. nov. and Ornithinibacillus californiensis sp. nov.
abstract: A Gram-positive, aerobic, rod-shaped, motile, endospore-forming bacterium was isolated from pasteurized milk from Bavaria, Germany. 16S rRNA gene sequence similarities indicated that strain WSBC 24001(T) was most closely related to Virgibacillus species (95.3-96.1 %), Oceanobacillus species (95.6-95.7 %), Bacillus firmus IAM 12464(T) (95.5 %) and Bacillus niacini IFO 15566(T) (95.2 %). However, strain WSBC 24001(T) showed the highest level of sequence similarity to an unnamed strain, MB-9(T) (97.6 %), which was isolated from coastal surface sediments in California. Hence, this strain was included in our study. The genomic DNA G + C contents of strains WSBC 24001(T) and MB-9(T) were 36.4 mol and 40.8 mol%, respectively. The major respiratory quinone of both strains was menaquinone MK-7 and the peptidoglycan type was A4beta (L-orn<--D-Asp). The polar lipid profiles of these strains contained a predominance of diphosphatidylglycerol and moderate to minor amounts of phosphatidylglycerol, an unknown phospholipid and an unknown aminophospholipid. However, strain WSBC 24001(T) could be distinguished from strain MB-9(T) by the presence of an unknown lipid. The fatty acid profiles of the two strains comprised mainly iso- and anteiso-branched acids, but showed some significant quantitative differences in the amounts of certain acids. The DNA-DNA relatedness value (15.5 %) clearly demonstrated that strains WSBC 24001(T) and MB-9(T) are representatives of two different species. On the basis of their phylogenetic position and morphological, physiological and chemotaxonomic properties, a novel genus is proposed, Ornithinibacillus gen. nov., with two novel species, the type species Ornithinibacillus bavariensis sp. nov. (type strain WSBC 24001(T) = DSM 15681(T) = CCM 7096(T)) and Ornithinibacillus californiensis sp. nov. (type strain MB-9(T) = DSM 16628(T) = CCM 7237(T)).
authors.affiliation: Lehrstuhl für Mikrobielle Ökologie, Department für Grundlagen der Biowissenschaften, WZW, Technische Universität München, D-85354 Freising, Germany.
authors.forename: R
authors.initials: R
authors.lastname: Mayr
authors.affiliation: Institut für Bakteriologie, Mykologie und Hygiene, Veterinärmedizinische Universität, A-1210 Wien, Austria.
authors.forename: H-J
authors.initials: HJ
authors.lastname: Busse
authors.affiliation: Institut für Bakteriologie, Mykologie und Hygiene, Veterinärmedizinische Universität, A-1210 Wien, Austria.
authors.forename: H L
authors.initials: HL
authors.lastname: Worliczek
authors.affiliation: Lehrstuhl für Mikrobielle Ökologie, Department für Grundlagen der Biowissenschaften, WZW, Technische Universität München, D-85354 Freising, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Ehling-Schulz
authors.affiliation: Lehrstuhl für Mikrobielle Ökologie, Department für Grundlagen der Biowissenschaften, WZW, Technische Universität München, D-85354 Freising, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Scherer
mesh_terms: D002374:Catalase / Q000378:metabolism; D005227:Fatty Acids / Q000032:analysis; D006094:Gram-Positive Bacteria / Q000145:classification* / Q000235:genetics* / Q000302:isolation & purification / Q000378:metabolism; D008969:Molecular Sequence Data; D010802:Phylogeny; D013045:Species Specificity
chemical_list: D005227:Fatty Acids; D002374:Catalase