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<p>A long-rod-shaped, Gram-reaction-negative, non-motile, strictly aerobic, pale-gray-colored alphaproteobacterium, designated KMU-117<sup>T</sup>, was isolated from a seawater sample taken in the Republic of Korea and analyzed. Strain KMU-117<sup>T</sup> was capable of growing at 20–37&#xa0;°C, at pH 5.5–9.0, and at 0–3.0% (w/v) NaCl. Phylogenetic comparison of the 16S rRNA gene sequences revealed that strain KMU-117<sup>T</sup> was placed in the family <i>Roseobacteraceae</i> and showed greatest similarity (95.7%) with <i>Palleronia rufa</i> MOLA 401<sup>T</sup>. Strain KMU-117<sup>T</sup> contained C<sub>18:1</sub> <i>ω</i>7<i>c</i>, anteiso-C<sub>15:0</sub>, and C<sub>16:0</sub> as the major fatty acids (&gt; 10%) and Q-10 as a sole quinone. The polar lipids of KMU-117<sup>T</sup> included phosphatidylethanolamine, phosphatidylglycerol, phosphatidylcholine, and four unidentified polar lipids. Strain KMU-117<sup>T</sup> had a 3.8&#xa0;Mb genome with a 67.0% G + C content. The genome-based analysis of ANI and AAI values between strain KMU-117<sup>T</sup> and closely related species of the family <i>Roseobacteraceae</i> were 71.5–74.0% and 66.8–69.5%, respectively. <i>In silico</i> DDH value between strain KMU-117<sup>T</sup> and <i>P. rufa</i> MOLA 401<sup>T</sup> was 18.8%. Consequently, the phenotypic and phylogenomic data analyzed in this study suggest that the strain KMU-117<sup>T</sup> belongs to a novel genus and a new species of the family <i>Roseobacteraceae</i>, for which the name <i>Saliniferula longa</i> gen. nov., sp. nov. is proposed. The type strain is KMU-117<sup>T</sup> (= KCCM 90342<sup>T</sup> = NBRC 117094<sup>T</sup>).</p>

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Phenotypic and Phylogenomic Analyses of Saliniferula longa gen. nov., sp. nov.

  • 期刊论文

  • 发表日期：

    2025年12月27日

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  • Jaewoo Yoon,
  • Ji Hoon Oh

摘要

A long-rod-shaped, Gram-reaction-negative, non-motile, strictly aerobic, pale-gray-colored alphaproteobacterium, designated KMU-117T, was isolated from a seawater sample taken in the Republic of Korea and analyzed. Strain KMU-117T was capable of growing at 20–37 °C, at pH 5.5–9.0, and at 0–3.0% (w/v) NaCl. Phylogenetic comparison of the 16S rRNA gene sequences revealed that strain KMU-117T was placed in the family Roseobacteraceae and showed greatest similarity (95.7%) with Palleronia rufa MOLA 401T. Strain KMU-117T contained C18:1 ω7c, anteiso-C15:0, and C16:0 as the major fatty acids (> 10%) and Q-10 as a sole quinone. The polar lipids of KMU-117T included phosphatidylethanolamine, phosphatidylglycerol, phosphatidylcholine, and four unidentified polar lipids. Strain KMU-117T had a 3.8 Mb genome with a 67.0% G + C content. The genome-based analysis of ANI and AAI values between strain KMU-117T and closely related species of the family Roseobacteraceae were 71.5–74.0% and 66.8–69.5%, respectively. In silico DDH value between strain KMU-117T and P. rufa MOLA 401T was 18.8%. Consequently, the phenotypic and phylogenomic data analyzed in this study suggest that the strain KMU-117T belongs to a novel genus and a new species of the family Roseobacteraceae, for which the name Saliniferula longa gen. nov., sp. nov. is proposed. The type strain is KMU-117T (= KCCM 90342T = NBRC 117094T).