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  • Title: Nocardioides nanhaiensis sp. nov., an actinobacterium isolated from a marine sediment sample.
    Author: Zhang DF, Zhong JM, Zhang XM, Jiang Z, Zhou EM, Tian XP, Zhang S, Li WJ.
    Journal: Int J Syst Evol Microbiol; 2014 Aug; 64(Pt 8):2718-2722. PubMed ID: 24844261.
    Abstract:
    A rod- to coccus-shaped, non-spore-forming actinobacterium, strain YIM M13091(T), was isolated from a marine sediment sample collected from the South China Sea and examined by a polyphasic approach to clarify its taxonomic position. This Gram-staining-positive, aerobic actinobacterium did not produce substrate mycelium and aerial hyphae, and no diffusible pigments were produced on the media tested. The optimum growth occurred at 30 °C, 1% (w/v) NaCl and pH 8.0. Phylogenetic analysis based on 16S rRNA gene sequences showed that the isolate belongs to the genus Nocardioides, with low levels (≤96.2%) of sequence similarity with respect to Nocardioides kribbensis KSL-2(T) and other members of the genus Nocardioides. Whole-organism hydrolysates of the strain contained ll-2,6-diaminopimelic acid as the diagnostic diamino acid. The predominant menaquinone was MK-8(H4), with MK-8 in a minor amount. Diphosphatidylglycerol, phosphatidylglycerol, phosphatidylinositol, hydroxyphosphatidylinositol and phosphatidylcholine, were the main polar lipids detected, while iso-C(16 : 0) and C(18 : 1)ω9c were the major fatty acids. The G+C content of the genomic DNA was 68.5 mol%. Based on phylogenetic analysis, phenotypic and genotypic data, it is concluded that the isolate represents a member of the genus Nocardioides, and the name Nocardioides nanhaiensis sp. nov. (Type strain YIM M13091(T) = JCM 18127(T) = CCTCC AA 2011020(T)) is proposed for the novel species.
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