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<p>A novel bacteria, designated as YIM B04394<sup>T</sup>, was isolated from a freshwater sample collected from the Old Huanglong Cave in Kunming, Yunnan province, South-west China. The cells of this strain were Gram negative and rod shaped. The strain was found to be aerobic, oxidase positive, and weakly catalase positive, grew at 10–40℃ (optimum, 28 °C), pH 6.0–8.0 (optimum, pH 7.0), and low NaCl concentrations (up to 5.0%). Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain YIM B04394<sup>T</sup> clustered with <i>Roseateles</i> species. The DNA–DNA and ANI relatedness values of strain YIM B04394<sup>T</sup> with the related species <i>R. toxinivorans</i> DSM 16998<sup>&#xa0;T</sup> and <i>R. saccharophilus</i> DSM 25082<sup>&#xa0;T</sup> were 21.50–22.9%% and 76.47–76.93%, respectively. The predominant fatty acids included C<sub>16:1</sub><i>ω</i>6<i>c</i> and/or C<sub>16:1</sub> <i>ω</i>7<i>c</i> and C<sub>16:0</sub>. Ubiquinone- 8 was detected as the respiratory quinone, and the major polar lipids were diphosphatidylglycerol, phosphatidylethanolamine, and an unknown phospholipid. The DNA G + C content was 67.89%. Based on phylogenomic and phylogenetic analyses, combined with phenotypic and chemotaxonomic characterizations, this strain represents a novel <i>Roseateles</i> species for which the name <i>Roseateles cavernae</i> sp. nov. is proposed. The type strain is YIM B04394<sup>T</sup> (= NBRC 115775<sup>&#xa0;T</sup> = KCTC 92438<sup>&#xa0;T</sup> = CCTCC AB2021502<sup>T</sup>).</p>

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Roseateles cavernae sp. nov., a Bacterium Isolated from Freshwater of the Old Huanglong Cave in Yunnan Province, South-West China

  • 期刊论文

  • 发表日期：

    2025年4月10日

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  • Yu-Man Zhang,
  • Qian Jiang,
  • Mu-Yao Li,
  • Qing-Yu Miao,
  • Yi-Qing Li,
  • Min Yin,
  • Cui-Ping Miao,
  • Shu-Kun Tang

摘要

A novel bacteria, designated as YIM B04394T, was isolated from a freshwater sample collected from the Old Huanglong Cave in Kunming, Yunnan province, South-west China. The cells of this strain were Gram negative and rod shaped. The strain was found to be aerobic, oxidase positive, and weakly catalase positive, grew at 10–40℃ (optimum, 28 °C), pH 6.0–8.0 (optimum, pH 7.0), and low NaCl concentrations (up to 5.0%). Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain YIM B04394T clustered with Roseateles species. The DNA–DNA and ANI relatedness values of strain YIM B04394T with the related species R. toxinivorans DSM 16998 T and R. saccharophilus DSM 25082 T were 21.50–22.9%% and 76.47–76.93%, respectively. The predominant fatty acids included C16:1ω6c and/or C16:1 ω7c and C16:0. Ubiquinone- 8 was detected as the respiratory quinone, and the major polar lipids were diphosphatidylglycerol, phosphatidylethanolamine, and an unknown phospholipid. The DNA G + C content was 67.89%. Based on phylogenomic and phylogenetic analyses, combined with phenotypic and chemotaxonomic characterizations, this strain represents a novel Roseateles species for which the name Roseateles cavernae sp. nov. is proposed. The type strain is YIM B04394T (= NBRC 115775 T = KCTC 92438 T = CCTCC AB2021502T).