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Volume 73, Issue 11

gen. nov., sp. nov., a bacterium in the family isolated from seawater No Access

Abstract

A Gram-stain-negative, yellow-pigmented, non-motile, rod-shaped, catalase-positive, strictly aerobic marine bacterium, designated XHP0103, was isolated from seawater collected from the southern Yellow Sea, PR China (34° 45′ 53″ N 119° 25′ 30″ E). Strain XHP0103 grew optimally at 28 °C, pH 7.5 and in 1.0–3.0 % (w/v) sea salt. MK-6 was the major respiratory quinone. The major cellular fatty acids (>10%) were iso-C, iso-C G and iso-C 3-OH. The polar lipid profile contained phosphatidylethanolamine, an unidentified aminolipid, an unidentified glycolipid and an unidentified lipid. Results of 16S rRNA gene sequence analysis indicated that strain XHP0103 displayed highest sequence similarity to IP7 (94.1 %). However, the phylogenetic trees based on 16S rRNA gene sequences suggested that strain XHP0103 clustered with HST1-43 (93.4 % sequence similarity) and AH-MY3 (93.5 %). Genome sequencing revealed that strain XHP0103 comprised 3 134 388 bp with 2770 protein-coding genes, and the DNA G+C content was 35.5 %. The average nucleotide identity and digital DNA–DNA hybridization values between strain XHP0103 and HST1-43 were 73.6 and 17.3 %, respectively. Based on phylogenetic, phenotypic, genomic and chemotaxonomic evidence, strain XHP0103 represents a novel genus in the family , for which the name gen. nov., sp. nov. is proposed. The type strain is XHP0103 (=MCCC 1K06060=JCM 34682).

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  • Accepted:
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Keyword(s): Flavobacteriaceae , Marixanthotalea gen. nov. , seawater and taxonomy
Funding
This study was supported by the:
  • Jiangsu Innovation Center of Marine Bioresources (Award 822153216)
    • Principle Award Recipient: AiHua Zhang
  • Innovation Project for Marine Science and Technology of Jiangsu Province (Award No. JSZRHYKJ202209)
    • Principle Award Recipient: Dao-FengZhang
© 2023 The Authors
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2023-11-01
2024-05-08
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Marixanthotalea marina gen. nov., sp. nov., a bacterium in the family Flavobacteriaceae isolated from seawater
Int J Syst Evol Microbiol 73, 006107 (2023); https://doi.org/10.1099/ijsem.0.006107
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