1887

Abstract

A taxonomic study was carried out on strain HN-E26, which was isolated from sponge collected from Yangpu Bay, Hainan, PR China. Cells of strain HN-E26 were Gram-stain-negative, motile by gliding, yellow-pigmented and rod-shaped. The strain could grow at 10–40 °C (optimum, 25 °C), at pH 6.0–9.0 (optimum, pH 7.0) and in 0.5–12 % (w/v) NaCl (optimum, 4–7 %). This isolate was positive for oxidase, catalase, and the hydrolysis of starch, xylan, aesculin and gelatin, but negative for indole production and the reduction of nitrate. Strain HN-E26 shared the highest 16S rRNA gene sequence similarity with LYYY01 (95.5 %), followed by A2 (94.4 %), NH57N (94.3 %) and 022-2-26 (94.3 %). The phylogenetic tree based on 16S rRNA gene sequences revealed that strain HN-E26 formed a distinct phylogenetic lineage within the cluster comprising LYYY01 and ‘’ ST2L12. The dominant fatty acids were iso-C and iso-C G. The major polar lipids comprised phosphatidylethanolamine, three unidentified aminolipids and six unidentified lipids. The respiratory lipoquinone was identified as MK-6. The G+C content of the genomic DNA was 33.9 mol%. Based on the phenotypic and phylogenetic data, strain HN-E26 represents a novel species of the genus , for which the name sp. nov. is proposed, with the type strain HN-E26 (=MCCC 1K03326=LMG 30458).

Funding
This study was supported by the:
  • Lingping Zhuang , the Young and the Middle-Aged Teacher Education Scientific Research Project of Fujian Province , (Award No. JT180644)
  • Lianzhong Luo , the Scientific Research Project of Xiamen Southern Ocean Center , (Award No.17GYY008NF04)
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2020-01-24
2020-05-30
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