1887

Abstract

A Gram-stain-negative, strictly aerobic, non-motile, catalase- and oxidase-positive, pink and rod-shaped strain, designated RY-2, was isolated from sediment of Fuyang River located in Wuqiang County, Hengshui City, Hebei Province, PR China. The strain grew at 25–45 °C (optimum, 37 °C), pH 7.0–8.0 (optimum, pH 7.0) and in the presence of 0–1.5 % (w/v) NaCl (optimum, 1 %). From the phylogenetic analysis of the 16S rRNA gene sequence, strain RY-2 was affiliated to the genus , and had the highest 16S rRNA gene sequence similarity to JCM 17389 (98.3 %) and the similarity values between strain RY-2 and other type strains was all below 89.3 %. The genome size of strain RY-2 was 4.75 Mb and the DNA G+C content was 46.6 %. Values of digital DNA–DNA hybridization and average nucleotide identity between strain RY-2 and the reference strain were 63.2 and 95.5 %, respectively. The major fatty acids (≥5.0 %) were iso-C (37.9 %), summed feature 9 (8.4 %, iso-C 9 and/or C10-methyl), anteiso-C (8.2 %), iso-C 3-OH (7.6 %) and summed feature 4 (5.2 %, iso-C I and/or anteiso-C B) and its sole menaquinone was MK-7. The polar lipids consisted of phosphatidylethanolamine, an unknown phosphoglycolipid, an unidentified phospholipid, two unidentified aminolipids, three unidentified glycolipids and nine unidentified lipids. Based on the results of biochemical, physiological, phylogenomic and chemotaxonomic analyses, strain RY-2 is considered to represent a novel species of the genus within the family , for which the name sp. nov. is proposed. The type strain is RY-2 (=GDMCC 1.2781=JCM 35631).

Funding
This study was supported by the:
  • Natural Science Research Project of Hengshui University (Award 2018ZX001)
    • Principle Award Recipient: WeiShuzhen
  • Major Program of Shandong Provincial Natural Science Foundation (Award ZR2020ZD19)
    • Principle Award Recipient: LiuAijv
  • Natural Science Foundation of Shandong Province (Award ZR2020MD121)
    • Principle Award Recipient: HongliangLiu
  • Shandong Provincial Natural Science Foundation for Outstanding Young Scholars (Award ZR2022YQ34)
    • Principle Award Recipient: HongliangLiu
  • National Natural Science Foundation of China (Award 42177403)
    • Principle Award Recipient: HongliangLiu
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2023-07-28
2024-10-08
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