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<p>A novel bacterial isolate designated as strain 1C24<sup>T</sup> was isolated from a coastal breakwater stone. Its cells were Gram-stain-negative, aerobic, non-motile and rod-shaped. The major cellular fatty acids were summed feature 8 (C<sub>18:1</sub> <i>ω</i>6<i>c</i> and/or C<sub>18:1</sub> <i>ω</i>7<i>c</i>), iso-C<sub>18:0</sub> and C<sub>18:1</sub> <i>ω</i>7<i>c</i> 11-methyl; the main polar lipids included diphosphatidylglycerol, phosphatidylcholine, phosphatidylethanolamine, phosphatidylglycerol and sphingoglycolipid; the respiratory quinone was Q-10. The 16S rRNA gene-based analysis demonstrated that strain 1C24<sup>T</sup> belonged to the family <i>Erythrobacteraceae</i>. The phylogenomic inference revealed that strain 1C24<sup>T</sup> belonged to the genus <i>Parerythrobacter</i> and formed a separate branch independent from its relatives. The digital DNA-DNA hybridization, average nucleotide identity and amino acid identity values between strain 1C24<sup>T</sup> and its relatives of the genus <i>Parerythrobacter</i> further indicated that strain 1C24<sup>T</sup> should represent a putative novel species of this genus. The genomic size and DNA G + C content of strain 1C24<sup>T</sup> were 2.88 Mbp and 64.85%. The genome analysis demonstrated that strain 1C24<sup>T</sup> contained a complete photosynthesis gene cluster and a carotenoid biosynthesis gene cluster, and the latter was confirmed by carotenoid detection. Based on genotypic and phenotypic characteristics, strain 1C24<sup>T</sup> is concluded to represent a novel species of the genus <i>Parerythrobacter</i> within the family <i>Erythrobacteraceae</i>, for which the name <i>Parerythrobacter aurantius</i> sp. nov. is proposed. The type strain is 1C24<sup>T</sup> (= GDMCC 1.2450<sup>T</sup> = KCTC 82667<sup>T</sup>).</p>

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Parerythrobacter aurantius sp. nov., a Member of the Family Erythrobacteraceae Isolated from a Coastal Breakwater Stone

  • 期刊论文

  • 发表日期：

    2025年6月30日

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  • Yang Liu,
  • Tao Pei,
  • Juan Du,
  • Ming-Rong Deng,
  • Honghui Zhu

摘要

A novel bacterial isolate designated as strain 1C24T was isolated from a coastal breakwater stone. Its cells were Gram-stain-negative, aerobic, non-motile and rod-shaped. The major cellular fatty acids were summed feature 8 (C18:1 ω6c and/or C18:1 ω7c), iso-C18:0 and C18:1 ω7c 11-methyl; the main polar lipids included diphosphatidylglycerol, phosphatidylcholine, phosphatidylethanolamine, phosphatidylglycerol and sphingoglycolipid; the respiratory quinone was Q-10. The 16S rRNA gene-based analysis demonstrated that strain 1C24T belonged to the family Erythrobacteraceae. The phylogenomic inference revealed that strain 1C24T belonged to the genus Parerythrobacter and formed a separate branch independent from its relatives. The digital DNA-DNA hybridization, average nucleotide identity and amino acid identity values between strain 1C24T and its relatives of the genus Parerythrobacter further indicated that strain 1C24T should represent a putative novel species of this genus. The genomic size and DNA G + C content of strain 1C24T were 2.88 Mbp and 64.85%. The genome analysis demonstrated that strain 1C24T contained a complete photosynthesis gene cluster and a carotenoid biosynthesis gene cluster, and the latter was confirmed by carotenoid detection. Based on genotypic and phenotypic characteristics, strain 1C24T is concluded to represent a novel species of the genus Parerythrobacter within the family Erythrobacteraceae, for which the name Parerythrobacter aurantius sp. nov. is proposed. The type strain is 1C24T (= GDMCC 1.2450T = KCTC 82667T).