title: Arthrobacter ardleyensis sp. nov., isolated from Antarctic lake sediment and deep-sea sediment.
abstract: Three psychrotrophic Arthrobacter strains, isolated from Antarctic lake sediment (An24, An25T) and deep-sea sediment (ZX6) were studied. Their 16S rRNA gene sequences showed highest similarities (97.0-97.9%) with those of A. nicotianae and A. protophormiae. All three strains underwent rod-coccus morphological change, had high mol% G+C content, were aerobic to slightly anaerobic, and grew between 0 degrees C and 30 degrees C, with optimal growth temperature around 25 degrees C. The cell wall peptidoglycan was A4alpha variant. DNA-DNA hybridization, physiological and chemotaxonomic studies indicated that these three strains constituted a new homogeneous genomic species within the genus Arthrobacter, for which the name Arthrobacter ardleyensis, with the type strain An25T (CGMCC 1.3685, JCM 12921) was proposed.
authors.affiliation: School of Life Science, Xiamen University, Xiamen, P.R. China.
authors.forename: M
authors.initials: M
authors.lastname: Chen
authors.forename: X
authors.initials: X
authors.lastname: Xiao
authors.forename: P
authors.initials: P
authors.lastname: Wang
authors.forename: X
authors.initials: X
authors.lastname: Zeng
authors.forename: Fengping
authors.initials: F
authors.lastname: Wang
mesh_terms: D000332:Aerobiosis; D000864:Antarctic Regions; D001173:Arthrobacter / Q000145:classification* / Q000302:isolation & purification*; D015373:Bacterial Typing Techniques; D001482:Base Composition; D001483:Base Sequence; D002473:Cell Wall / Q000737:chemistry; D004269:DNA, Bacterial / Q000737:chemistry / Q000235:genetics; D004275:DNA, Ribosomal / Q000737:chemistry / Q000235:genetics; D005227:Fatty Acids / Q000032:analysis; D005618:Fresh Water / Q000382:microbiology; D020459:Genes, rRNA; D019015:Geologic Sediments / Q000382:microbiology*; D008969:Molecular Sequence Data; D009693:Nucleic Acid Hybridization; D010457:Peptidoglycan / Q000737:chemistry; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D012623:Seawater / Q000382:microbiology; D017422:Sequence Analysis, DNA; D012689:Sequence Homology, Nucleic Acid; D014871:Water Microbiology
chemical_list: D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D005227:Fatty Acids; D010457:Peptidoglycan; D012336:RNA, Ribosomal, 16S