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  • Title: Pseudoruegeria insulae sp. nov., isolated from a tidal flat.
    Author: Park S, Park JM, Yoon JH.
    Journal: Int J Syst Evol Microbiol; 2018 Nov; 68(11):3587-3592. PubMed ID: 30239328.
    Abstract:
    A Gram-stain-negative, aerobic, non-motile and ovoid or rod-shaped bacterial strain, designated BPTF-M20T, was isolated from tidal flat sediment in the Yellow Sea, Republic of Korea. Strain BPTF-M20T grew optimally at 30 °C, at pH 7.0-8.0 and in the presence of 2.0-3.0 % (w/v) NaCl. A neighbour-joining phylogenetic tree of 16S rRNA gene sequences showed that strain BPTF-M20T fell within the clade comprising the type strains of Pseudoruegeria species. Strain BPTF-M20T exhibited 16S rRNA gene sequence similarity values of 97.4-98.3 % to the type strains of Pseudoruegeria haliotis, Pseudoruegeria lutimaris, 'Pseudoruegeria litorisediminis' and Pseudoruegeria sabulilitoris and 96.4-96.9 % to the type strains of the other Pseudoruegeria species. Strain BPTF-M20T contained Q-10 as the predominant ubiquinone and C18 : 1ω7c as the major fatty acid. The major polar lipids detected in strain BPTF-M20T were phosphatidylcholine, phosphatidylethanolamine, phosphatidylglycerol, one unidentified aminolipid and one unidentified glycolipid. The DNA G+C content of strain BPTF-M20T was 63.2 mol%. Mean DNA-DNA relatedness values of strain BPTF-M20T with the type strains of P. haliotis, P. lutimaris, P. sabulilitoris and 'P. litorisediminis' were 18-27 %. Differential phenotypic properties, together with the phylogenetic and genetic data, revealed that strain BPTF-M20T was separated from recognized Pseudoruegeria species. On the basis of the data presented here, strain BPTF-M20T is considered to represent a novel species of the genus Pseudoruegeria, for which the name Pseudoruegeriainsulae sp. nov. is proposed. The type strain is BPTF-M20T (=KACC 19614T=KCTC 62422T=NBRC 113188T).
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