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Streptomyces glauciniger sp. nov., a novel mesophilic streptomycete isolated from soil in south China

¹ State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100080, China
² BCCM/LMG Bacteria Collection, Department of Biochemistry, Physiology and Microbiology, University Gent, K. L. Ledeganckstraat 35, B-9000 Gent, Belgium
³ School of Biology, University of Newcastle, Newcastle upon Tyne NE1 7RU, UK

Correspondence
Ying Huang
huangy{at}im.ac.cn

A polyphasic study was undertaken to establish the taxonomic status of a soil isolate. The organism, strain FXJ14^T, was found to have chemical and morphological properties characteristic of streptomycetes. Phylogenetic analyses based on an almost complete 16S rRNA gene sequence of the strain and on the 120 nt variable -region of the 16S rRNA molecule showed that it formed a distinct phyletic line within the range of variation encompassed by the genus Streptomyces. The sharp separation of the organism from representatives of the genus Streptomyces was strengthened by the fact that its BOX-PCR and RFLP of 16S rDNA-ITS fingerprints differed from those of over 450 recognized Streptomyces species. The isolate also had a profile of phenotypic properties that readily distinguished it from the genotypically close type strains. It is evident from the combination of genotypic and phenotypic data that strain FXJ14^T (=AS 4.1858^T=JCM 12278^T=LMG 22082^T) should be classified as the type strain of a novel species of the genus Streptomyces, for which the name Streptomyces glauciniger sp. nov. is proposed.

The GenBank/EMBL/DDBJ accession numbers for the 16S rRNA gene sequences of S. cuspidosporus AS 4.1686^T and S. glauciniger FXJ14^T are AY589505 and AY314782, respectively.

A scanning electron micrograph, a neighbour-joining tree based on -region sequences and dendrograms generated from RFLP and BOX-PCR results are available as supplementary material in IJSEM Online.

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