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<p>A novel bacterial strain, designated MBLB4367<sup>T</sup>, was isolated from the seacoast soil of Seo-do, Dokdo, Republic of Korea. The strain is Gram-stain-positive, sporulating, and rod-shaped. It grows within a temperature range of 10–45&#xa0;°C, with an optimum at 30&#xa0;°C, and thrives at pH 6.0–8.0 (optimum pH 7.0) and NaCl concentrations of 0–2% (w/v), with optimal growth at 0%. Phylogenetic analysis based on the 16&#xa0;S rRNA gene sequence revealed that strain MBLB4367<sup>T</sup> was most closely related to <i>Paenibacillus contaminans</i> CKOBP-6<sup>T</sup>, sharing 98.7% sequence similarity. The predominant fatty acids identified in this strain were anteiso-C<sub>15:0</sub> and iso-C<sub>15:0</sub>, while menaquinone-7 serves as the major respiratory quinone. The polar lipid profile included diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, and phosphatidyl-<i>N</i>-methylethanolamine as the major lipids. The genome of strain MBLB4367<sup>T</sup> has a size of 8.7&#xa0;Mb and a G + C content of 52.8%. Comparative genomic analyses, including average nucleotide identity (67.1–81.2%), average amino acid identity (64.1–83.6%), and DNA-DNA hybridization values (21.9–30.0%), confirm that this strain represented a novel species distinct from previously described closely related species of the genus <i>Paenibacillus</i>. Based on polyphasic taxonomic data, strain MBLB4367<sup>T</sup> is proposed as a novel species within the genus <i>Paenibacillus</i>, for which the name <i>Paenibacillus litoralis</i> sp. nov. The type strain is MBLB4367<sup>T</sup> (= KCTC 43804<sup>T</sup> = JCM 37834<sup>T</sup>).</p>

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Genome-based Classification of Paenibacillus Litoralis sp. nov., Isolated from Coastal Soil in Dokdo, Republic of Korea

  • 期刊论文

  • 发表日期：

    2026年2月5日

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  • Chi Young Hwang,
  • Eun Hee Bae,
  • In-Tae Cha,
  • Myung-Ji Seo

摘要

A novel bacterial strain, designated MBLB4367T, was isolated from the seacoast soil of Seo-do, Dokdo, Republic of Korea. The strain is Gram-stain-positive, sporulating, and rod-shaped. It grows within a temperature range of 10–45 °C, with an optimum at 30 °C, and thrives at pH 6.0–8.0 (optimum pH 7.0) and NaCl concentrations of 0–2% (w/v), with optimal growth at 0%. Phylogenetic analysis based on the 16 S rRNA gene sequence revealed that strain MBLB4367T was most closely related to Paenibacillus contaminans CKOBP-6T, sharing 98.7% sequence similarity. The predominant fatty acids identified in this strain were anteiso-C15:0 and iso-C15:0, while menaquinone-7 serves as the major respiratory quinone. The polar lipid profile included diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, and phosphatidyl-N-methylethanolamine as the major lipids. The genome of strain MBLB4367T has a size of 8.7 Mb and a G + C content of 52.8%. Comparative genomic analyses, including average nucleotide identity (67.1–81.2%), average amino acid identity (64.1–83.6%), and DNA-DNA hybridization values (21.9–30.0%), confirm that this strain represented a novel species distinct from previously described closely related species of the genus Paenibacillus. Based on polyphasic taxonomic data, strain MBLB4367T is proposed as a novel species within the genus Paenibacillus, for which the name Paenibacillus litoralis sp. nov. The type strain is MBLB4367T (= KCTC 43804T = JCM 37834T).