title: Streptomyces chiangmaiensis sp. nov. and Streptomyces lannensis sp. nov., isolated from the South-East Asian stingless bee (Tetragonilla collina).
abstract: Two novel actinomycetes, strains TA4-1(T) and TA4-8(T,) were isolated from the South-East Asian stingless bee (Tetragonilla collina Smith 1857), collected from Chiang Mai Province, Thailand. The morphological and chemotaxonomic properties of strains TA4-1(T) and TA4-8(T) were consistent with the genus Streptomyces, i.e. the formation of aerial mycelia bearing spiral spore chains, the presence of the ll-isomer of diaminopimelic acid in cell walls, iso- and anteiso-branched fatty acids with carbon chain lengths 14-17 atoms as the major fatty acids and MK-9(H8) as the predominant menaquinone plus minor amounts of MK-9(H6) and MK-9(H10). Analysis of 16S rRNA gene sequences showed that strains TA4-1(T) and TA4-8(T) exhibited 98.8 and 98.1% sequence similarity, respectively, with Streptomyces chromofuscus NRRL B-12175(T) and 98.9% sequence similarity with each other. This study suggested that strains TA4-1(T) and TA4-8(T) were distinct from previously described species of the genus Streptomyces. In addition, the low degrees of DNA-DNA relatedness between the isolates and S. chromofuscus JCM 4354(T) warranted assigning strains TA4-1(T) and TA4-8(T) to two novel species. The names Streptomyces chiangmaiensis sp. nov. (type strain TA4-1(T)  = JCM 16577(T)  = TISTR 1981(T)) and Streptomyces lannensis sp. nov. (type strain TA4-8(T)  = JCM 16578(T)  = TISTR 1982(T)) are proposed. The species names indicate the geographical locations where the stingless bees reside.
authors.affiliation: Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand.
authors.forename: Yaowanoot
authors.initials: Y
authors.lastname: Promnuan
authors.affiliation: Japan Collection of Microorganisms, RIKEN BioResource Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
authors.forename: Takuji
authors.initials: T
authors.lastname: Kudo
authors.affiliation: Japan Collection of Microorganisms, RIKEN BioResource Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
authors.forename: Moriya
authors.initials: M
authors.lastname: Ohkuma
authors.affiliation: Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand.
authors.forename: Panuwan
authors.initials: P
authors.lastname: Chantawannakul
mesh_terms: D000818:Animals; D015373:Bacterial Typing Techniques; D001482:Base Composition; D001516:Bees / Q000382:microbiology*; D004269:DNA, Bacterial / Q000235:genetics; D003960:Diaminopimelic Acid / Q000032:analysis; D005227:Fatty Acids / Q000032:analysis; D008969:Molecular Sequence Data; D009693:Nucleic Acid Hybridization; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D017422:Sequence Analysis, DNA; D013302:Streptomyces / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification; D013785:Thailand; D024482:Vitamin K 2 / Q000031:analogs & derivatives / Q000032:analysis
chemical_list: D004269:DNA, Bacterial; D005227:Fatty Acids; D012336:RNA, Ribosomal, 16S; D024482:Vitamin K 2; C073355:menaquinone 9; D003960:Diaminopimelic Acid