title: Williamsia marianensis sp. nov., a novel actinomycete isolated from the Mariana Trench.
abstract: The taxonomic status of an actinomycete isolated from sediment collected from the Mariana Trench was established using a combination of genotypic and phenotypic data. Isolate MT8T had chemotaxonomic and morphological properties consistent with its classification in the genus Williamsia, and formed a distinct phyletic line in the 16S rRNA gene tree together with the type strain of Williamsia muralis. The isolate was readily distinguished from the latter, and from representatives of other Williamsia species, using DNA-DNA relatedness and phenotypic criteria. Predominant cellular fatty acids were oleic, palmitic and tuberculostearic acids and a hexadecenoic acid. The DNA G+C content was 65.2 mol%. It is apparent that the isolate belongs to a novel species of Williamsia. Strain MT8T (=DSM 44944T=NCIMB 14085T) was thus considered to be the type strain of a novel species in the genus Williamsia, for which the name Williamsia marianensis sp. nov. is proposed.
authors.affiliation: Division of Biology, King George VI Building, University of Newcastle, Newcastle upon Tyne NE1 7RU, UK.
authors.forename: Wasu
authors.initials: W
authors.lastname: Pathom-Aree
authors.affiliation: Extremobiosphere Research Center, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 2-15 Natsushima-cho, Yokosuka 237-0061, Japan.
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Nogi
authors.affiliation: School of Applied Sciences, Northumbria University, Newcastle upon Tyne NE1 8ST, UK.
authors.forename: Iain C
authors.initials: IC
authors.lastname: Sutcliffe
authors.affiliation: Division of Biology, King George VI Building, University of Newcastle, Newcastle upon Tyne NE1 7RU, UK.
authors.forename: Alan C
authors.initials: AC
authors.lastname: Ward
authors.affiliation: Extremobiosphere Research Center, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 2-15 Natsushima-cho, Yokosuka 237-0061, Japan.
authors.forename: Koki
authors.initials: K
authors.lastname: Horikoshi
authors.affiliation: Department of Biosciences, University of Kent, Canterbury, Kent CT2 7NJ, UK.
authors.forename: Alan T
authors.initials: AT
authors.lastname: Bull
authors.affiliation: Division of Biology, King George VI Building, University of Newcastle, Newcastle upon Tyne NE1 7RU, UK.
authors.forename: Michael
authors.initials: M
authors.lastname: Goodfellow
mesh_terms: D039903:Actinobacteria / Q000145:classification* / Q000166:cytology / Q000302:isolation & purification* / Q000502:physiology; D015373:Bacterial Typing Techniques; D001482:Base Composition; D004269:DNA, Bacterial / Q000737:chemistry / Q000235:genetics; D004275:DNA, Ribosomal / Q000737:chemistry / Q000235:genetics; D005227:Fatty Acids / Q000032:analysis / Q000302:isolation & purification; D020459:Genes, rRNA; D019015:Geologic Sediments / Q000382:microbiology*; D008969:Molecular Sequence Data; D009693:Nucleic Acid Hybridization; D010802:Phylogeny; D012329:RNA, Bacterial / Q000235:genetics; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D017422:Sequence Analysis, DNA; D014871:Water Microbiology
chemical_list: D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D005227:Fatty Acids; D012329:RNA, Bacterial; D012336:RNA, Ribosomal, 16S