title: Bacillus nealsonii sp. nov., isolated from a spacecraft-assembly facility, whose spores are gamma-radiation resistant.
abstract: One of the spore-formers isolated from a spacecraft-assembly facility, belonging to the genus Bacillus, is described on the basis of phenotypic characterization, 16S rDNA sequence analysis and DNA-DNA hybridization studies. It is a Gram-positive, facultatively anaerobic, rod-shaped eubacterium that produces endospores. The spores of this novel bacterial species exhibited resistance to UV, gamma-radiation, H2O2 and desiccation. The 18S rDNA sequence analysis revealed a clear affiliation between this strain and members of the low G+C Firmicutes. High 16S rDNA sequence similarity values were found with members of the genus Bacillus and this was supported by fatty acid profiles. The 16S rDNA sequence similarity between strain FO-92T and Bacillus benzoevorans DSM 5391T was very high. However, molecular characterizations employing small-subunit 16S rDNA sequences were at the limits of resolution for the differentiation of species in this genus, but DNA-DNA hybridization data support the proposal of FO-92T as Bacillus nealsonii sp. nov. (type strain is FO-92T =ATCC BAAM-519T =DSM 15077T).
authors.affiliation: Biotechnology and Planetary Protection Group, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.
authors.forename: Kasthuri
authors.initials: K
authors.lastname: Venkateswaran
authors.affiliation: Biotechnology and Planetary Protection Group, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.
authors.forename: Michael
authors.initials: M
authors.lastname: Kempf
authors.affiliation: Biotechnology and Planetary Protection Group, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.
authors.forename: Fei
authors.initials: F
authors.lastname: Chen
authors.affiliation: National Research Institute of Fisheries Science, Food Processing Division, Kanazawa-ku, Yokohama-City, Kanagawa 236-8648, Japan.
authors.forename: Masataka
authors.initials: M
authors.lastname: Satomi
authors.affiliation: Department of Veterinary Science and Microbiology, University of Arizona, Tucson, AZ 85721, USA.
authors.forename: Wayne
authors.initials: W
authors.lastname: Nicholson
authors.affiliation: Biotechnology and Planetary Protection Group, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.
authors.forename: Roger
authors.initials: R
authors.lastname: Kern
mesh_terms: D001407:Bacillus / Q000235:genetics / Q000302:isolation & purification* / Q000528:radiation effects*; D004269:DNA, Bacterial / Q000235:genetics; D004275:DNA, Ribosomal / Q000235:genetics; D004203:Disinfection; D005227:Fatty Acids / Q000032:analysis; D005720:Gamma Rays; D008854:Microscopy, Electron; D008969:Molecular Sequence Data; D010641:Phenotype; D010802:Phylogeny; D012329:RNA, Bacterial / Q000235:genetics; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D011836:Radiation Tolerance; D018531:Spacecraft; D013171:Spores, Bacterial / Q000235:genetics / Q000528:radiation effects; D014466:Ultraviolet Rays; D014481:United States; D018557:United States National Aeronautics and Space Administration
chemical_list: D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D005227:Fatty Acids; D012329:RNA, Bacterial; D012336:RNA, Ribosomal, 16S