Laboratory of Tropical Microbial Resource

Laboratory of Tropical Microbial Resource

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Sui J.-L.,Laboratory of Tropical Microbial Resource | Sui J.-L.,Key Laboratory of Tropical Crop Biotechnology | Sui J.-L.,Chinese Academy of Sciences | Sui J.-L.,Hainan University | And 14 more authors.
International Journal of Systematic and Evolutionary Microbiology | Year: 2011

A novel strain, 219820 T, whose metabolites were found to be active against tumour cells, was isolated and characterized. The isolate belonged to the genus Streptomyces and had white to grey aerial mycelium and long chains of smooth spores in the aerial mycelium. A phylogenetic tree based on 16S rRNA gene sequences showed that strain 219820T had highest similarity to members of the genus Streptomyces and was most closely, albeit loosely, associated with Streptomyces crystallinus NBRC 15401 T (98.624% similarity), Streptomyces melanogenes NBRC 12890T (98.565%) and Streptomyces noboritoensis NBRC 13065T (98.564%). However, DNA-DNA relatedness and phenotypic data readily distinguished strain 219820 T from these phylogenetically related type strains. It is evident from the combination of genotypic and phenotypic data that strain 219820 T represents a novel species of the genus Streptomyces, for which the name Streptomyces sanyensis sp. nov. is proposed; the type strain is 219820 T (5CGMCC 4.5626 T 5DSM 42014 T). © 2011 IUMS.


Xu X.-X.,Laboratory of Tropical Microbial Resource | Qu Z.,Laboratory of Tropical Microbial Resource | Wang H.,Fujian Institute of Microbiology | Lin H.-P.,Laboratory of Tropical Microbial Resource | And 4 more authors.
International Journal of Systematic and Evolutionary Microbiology | Year: 2011

A Gram-reaction-positive, non-motile actinobacterium, designated strain 210121 T, was isolated from rhizosphere soil of the mangrove fern Acrostichum speciosum. 16S rRNA gene sequence analysis showed that the isolate belonged to the genus Asanoa. DNA-DNA relatedness values between strain 210121 T and the type strains of the three recognized species of the genus Asanoa were below the 70% threshold recommended for distinguishing bacterial genomic species. The novel isolate contained glutamic acid, glycine, alanine and meso-A2pm as cell-wall amino acids, indicating peptidoglycan type A1c. The characteristic whole-cell sugars were xylose, ribose, glucose and mannose. The predominant menaquinones were MK-9(H 4), MK-9(H 6) and MK-9(H 8). The major fatty acids were iso-C 16: 0 (30.9%), C17: 0 (23.0%), anteiso-C 15: 0 (14.9%) and iso-C 15: 0 (12.3%). The phospholipid profile comprised phosphatidylethanolamine, phosphatidylinositol mannosides and phospholipids of unknown structure containing glucosamine. The G+C content of the DNA was 70.3 mol%. On the basis of the phenotypic and genotypic data, strain 210121 T (=CGMCC 4.5593 T =DSM 45427 T) represents a novel species of the genus Asanoa, for which the name Asanoa hainanensis sp. nov., is proposed. An emended description of the genus Asanoa is also proposed. © 2011 IUMS.

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