title: Actinomadura rupiterrae sp. nov., isolated from cliff soil.
abstract: A novel actinomycete strain, designated CS5-AC15T, was isolated from a soil sample collected from a cliff on Mara Island, Jeju, Republic of Korea, and subjected to a polyphasic taxonomic analysis. The isolate produced well-developed, yellow substrate mycelium and white aerial mycelium that differentiated into straight or flexuous chains of smooth-surfaced spores. 16S rRNA gene sequence analyses showed that the organism belonged to the family Thermomonosporaceae and formed a tight cluster with the type strain of Actinomadura oligospora (97.4 % sequence similarity). Chemotaxonomic characteristics were consistent with its assignment to the genus Actinomadura in that the isolate had meso-diaminopimelic acid as the diagnostic diamino acid in the cell wall, madurose as the characteristic sugar, N-acetyl type of murein in the peptidoglycan, MK-9(H6) and MK-9(H8) as major menaquinones and a polar lipid profile containing diphosphatidylglycerol, phosphatidylglycerol, phosphatidylinositol and unknown phospholipids. Mycolic acids were not detected. The predominant fatty acids were C16:0, C18:1ω9c and iso-C16:0. The DNA G+C content was 70.9 mol%. DNA relatedness of strain CS5-AC15T and A. oligospora JCM 10648T was 37.9±0.7 %. On the basis of the phenotypic, phylogenetic and DNA-DNA hybridization data, strain CS5-AC15T is assigned to a novel species of the genus Actinomadura, for which the name Actinomadura rupiterrae sp. nov. is proposed (type strain CS5-AC15T=KCTC 19559T=DSM 45251T).
authors.affiliation: Department of Science Education, Jeju National University, Jeju 690-756, Republic of Korea.
authors.forename: Soon Dong
authors.initials: SD
authors.lastname: Lee
mesh_terms: D000192:Actinomycetales / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification; D015373:Bacterial Typing Techniques; D001482:Base Composition; D004269:DNA, Bacterial / Q000235:genetics; D003960:Diaminopimelic Acid / Q000737:chemistry; D005227:Fatty Acids / Q000737:chemistry; D062312:Islands; D008969:Molecular Sequence Data; D009693:Nucleic Acid Hybridization; D010457:Peptidoglycan / Q000737:chemistry; D010743:Phospholipids / Q000737:chemistry; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D056910:Republic of Korea; D017422:Sequence Analysis, DNA; D012988:Soil Microbiology; D024482:Vitamin K 2 / Q000031:analogs & derivatives / Q000737:chemistry
chemical_list: D004269:DNA, Bacterial; D005227:Fatty Acids; D010457:Peptidoglycan; D010743:Phospholipids; D012336:RNA, Ribosomal, 16S; D024482:Vitamin K 2; C073355:menaquinone 9; D003960:Diaminopimelic Acid