title: Korean indigenous bacterial species with valid names belonging to the phylum Actinobacteria.
abstract: To understand the isolation and classification state of actinobacterial species with valid names for Korean indigenous isolates, isolation source, regional origin, and taxonomic affiliation of the isolates were studied. At the time of this writing, the phylum Actinobacteria consisted of only one class, Actinobacteria, including five subclasses, 10 orders, 56 families, and 330 genera. Moreover, new taxa of this phylum continue to be discovered. Korean actinobacterial species with a valid name has been reported from 1995 as Tsukamurella inchonensis isolated from a clinical specimen. In 1997, Streptomyces seoulensis was validated with the isolate from the natural Korean environment. Until Feb. 2016, 256 actinobacterial species with valid names originated from Korean territory were listed on LPSN. The species were affiliated with three subclasses (Acidimicrobidae, Actinobacteridae, and Rubrobacteridae), four orders (Acidimicrobiales, Actinomycetales, Bifidobacteriales, and Solirubrobacterales), 12 suborders, 36 families, and 93 genera. Most of the species belonged to the subclass Actinobacteridae, and almost of the members of this subclass were affiliated with the order Actinomycetales. A number of novel isolates belonged to the families Nocardioidaceae, Microbacteriaceae, Intrasporangiaceae, and Streptomycetaceae as well as the genera Nocardioides, Streptomyces, and Microbacterium. Twenty-six novel genera and one novel family, Motilibacteraceae, were created first with Korean indigenous isolates. Most of the Korean indigenous actionobacterial species were isolated from natural environments such as soil, seawater, tidal flat sediment, and fresh-water. A considerable number of species were isolated from artificial resources such as fermented foods, wastewater, compost, biofilm, and water-cooling systems or clinical specimens. Korean indigenous actinobacterial species were isolated from whole territory of Korea, and especially a large number of species were from Jeju, Gyeonggi, Jeonnam, Daejeon, and Chungnam. A large number of novel actinobacterial species continue to be discovered since the Korean government is encouraging the search for new bacterial species and researchers are endeavoring to find out novel strains from extreme or untapped environments.
authors.affiliation: Biological Resource Center, KRIBB, Jeongeup, 56212, Republic of Korea.
authors.forename: Kyung Sook
authors.initials: KS
authors.lastname: Bae
authors.affiliation: Department of Biology, College of Life Science and Natural Resources, Sunchon National University, Suncheon, 57922, Republic of Korea.
authors.forename: Mi Sun
authors.initials: MS
authors.lastname: Kim
authors.affiliation: Department of Biology, College of Life Science and Natural Resources, Sunchon National University, Suncheon, 57922, Republic of Korea.
authors.forename: Ji Hee
authors.initials: JH
authors.lastname: Lee
authors.affiliation: Department of Biology, College of Life Science and Natural Resources, Sunchon National University, Suncheon, 57922, Republic of Korea.
authors.forename: Joo Won
authors.initials: JW
authors.lastname: Kang
authors.affiliation: Department of Biology, College of Life Science and Natural Resources, Sunchon National University, Suncheon, 57922, Republic of Korea.
authors.forename: Dae In
authors.initials: DI
authors.lastname: Kim
authors.affiliation: Department of Biology, College of Life Science and Natural Resources, Sunchon National University, Suncheon, 57922, Republic of Korea.
authors.forename: Ji Hee
authors.initials: JH
authors.lastname: Lee
authors.affiliation: Department of Biology, College of Life Science and Natural Resources, Sunchon National University, Suncheon, 57922, Republic of Korea. scnu@sunchon.ac.kr.
authors.forename: Chi Nam
authors.initials: CN
authors.lastname: Seong
mesh_terms: D039903:Actinobacteria / Q000145:classification* / Q000235:genetics* / Q000302:isolation & purification; D044822:Biodiversity; D003470:Culture Media; D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D005618:Fresh Water / Q000382:microbiology; D019015:Geologic Sediments / Q000382:microbiology; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S; D056910:Republic of Korea; D012623:Seawater / Q000382:microbiology; D012988:Soil Microbiology
chemical_list: D003470:Culture Media; D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D012336:RNA, Ribosomal, 16S
keywords: Jeju; Korean indigenous isolates; classification state; novel genera; phylum Actinobacteria