title: Streptomyces sedi sp. nov., isolated from surface-sterilized roots of Sedum sp.
abstract: An endophytic actinomycete, strain YIM 65188(T), was isolated from surface-sterilized tissue of Sedum sp. collected from Yunnan province, south-west China, and characterized by using a polyphasic approach. Analysis of the 16S rRNA gene sequence showed that strain YIM 65188(T) is a member of the genus Streptomyces and exhibited 97.5 and 96.3 % gene sequence similarities to Streptomyces specialis GW41-1564(T) and Streptomyces hainanensis YIM 47672(T), respectively, whereas low sequence similarity values (<95.2 %) distinguished strain YIM 65188(T) from all other Streptomyces species with validly published names. Strain YIM 65188(T) had a unique menaquinone composition, with the predominant quinones being MK-11(H(6)) and MK-10(H(6)), with moderate amounts of MK-10(H(8)), MK-11(H(8)), MK-9(H(8)), MK-11(H(4)), MK-9(H(6)) and MK-10(H(4)). Similarly, the closest phylogenetic relative, S. specialis GW41-1564(T), also had an unusual quinone composition, with the predominant menaquinones MK-10(H(4)) and MK-10(H(6)) and minor amounts of MK-9(H(4)) and MK-9(H(6)). The DNA-DNA hybridization value between strain YIM 65188(T) and S. specialis GW41-1564(T) was 42.7 %. On the basis of phenotypic and phylogenetic characteristics, strain YIM 65188(T) was identified as a novel species of the genus Streptomyces for which the name Streptomyces sedi sp. nov. is proposed, with YIM 65188(T) (=CCTCC AA 208020(T) =DSM 41942(T)) as the type strain.
authors.affiliation: The Key Laboratory for Microbial Resources of the Ministry of Education, PR China.
authors.forename: Jie
authors.initials: J
authors.lastname: Li
authors.forename: Guo-Zhen
authors.initials: GZ
authors.lastname: Zhao
authors.forename: Sheng
authors.initials: S
authors.lastname: Qin
authors.forename: Wen-Yong
authors.initials: WY
authors.lastname: Zhu
authors.forename: Li-Hua
authors.initials: LH
authors.lastname: Xu
authors.forename: Wen-Jun
authors.initials: WJ
authors.lastname: Li
mesh_terms: D015373:Bacterial Typing Techniques; D001482:Base Composition; D002681:China; D027081:DNA Gyrase / Q000235:genetics; D004269:DNA, Bacterial / Q000032:analysis; D004275:DNA, Ribosomal / Q000032:analysis; D008969:Molecular Sequence Data; D009693:Nucleic Acid Hybridization; D010641:Phenotype; D010802:Phylogeny; D018517:Plant Roots / Q000382:microbiology*; D016133:Polymerase Chain Reaction / Q000379:methods; D011809:Quinones / Q000032:analysis; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D031963:Sedum / Q000382:microbiology*; D017422:Sequence Analysis, DNA; D013045:Species Specificity; D013302:Streptomyces / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification / Q000502:physiology
chemical_list: D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D011809:Quinones; D012336:RNA, Ribosomal, 16S; D027081:DNA Gyrase