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A taxonomic study was carried out on strain HN-E21, which was isolated from sponge collected from Yangpu Bay, Hainan, PR China. Cells of strain HN-E21 were Gram-stain-negative, non-spore-forming, tumbling-motile, ovoid- to rod-shaped and pale-yellow-pigmented that could grow at 15-42 °C (optimum, 37 °C), at pH 6-11 (pH 7) and in 0-14 % (w/v) NaCl (2-3 %). This isolate was positive for oxidase and catalase, but negative for hydrolysis of aesculin and gelatin. The phylogenetic tree based on 16S rRNA gene sequences showed that strain HN-E21 formed a clade with BH-SD19, GRP21, M-S13-148, CAU1059 and NH52J within the family . Strain HN-E21 shared the highest similarity to BH-SD19 (95.5 %), followed by 112 (95.3 %), D1-W8 (95.2 %), YM-20 (95.0 %) and H50 (95.0 %). The dominant fatty acids were summed feature 8 (Cω7 and/or Cω6) and C The major polar lipids comprised phosphatidylethanolamine, diphosphatidylglycerol, phosphatidylglycerol, phosphatidylcholine, three unidentified lipids and one unidentified phospholipid. The respiratory quinone was identified as Q-10. The G+C content of the genomic DNA was 66.4 mol%. Based on the phenotypic and phylogenetic data, strain HN-E21 represents a novel species of the genus , for which the name sp. nov. is proposed, with the type strain HN-E21 (=MCCC 1K03333=LMG 30456).
This article was published in the following journal.
Name: International journal of systematic and evolutionary microbiology
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