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f Croceivirga radicis gen. nov., sp. nov., isolated from a rotten tropical mangrove root

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  • Authors: Dong Hu1​,2​,† ,  Liping Wang1​,† ,  Yanwu Chen1​ ,  Xiaoyi Li1​ ,  Yaping Du1​ ,  Fengqin Sun1​ ,  Lei Wang1​ ,  Chun Fan2​ ,  Ran Zhao2​ ,  Chen Tang2​ , Zongze Shao1​
    • VIEW AFFILIATIONS
    • 1​ 1​Key Laboratory of Marine Genetic Resources, the Third Institute of Oceanography, State Oceanic Administration; State Key Laboratory Breeding Base of Marine Genetic Resources; Fujian Key Laboratory of Marine Genetic Resources; Fujian Collaborative Innovation Center of Marine Biological Resources; South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, Xiamen 361005, PR China 2​ 2​School of Public Health, Xiamen University, Xiamen 361005, PR China
  • *Correspondence: Zongze Shao [email protected]
  • First Published Online: 12 September 2017, International Journal of Systematic and Evolutionary Microbiology 67: 3733-3738, doi: 10.1099/ijsem.0.002179
  • Subject: New taxa - Bacteroidetes
  • Received:
  • Accepted:
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  • A novel bacterial strain, designated HSG9, was isolated from aisolated from a rotten tropical mangrove root. Cells of strain HSG9 were aerobic, Gram-stain-negative, yellow, oxidase-negative and catalase-positive. Growth was observed in 0.5–9 % sea salt (optimum 3 %, w/v), at 10–42 °C (optimum 25–35 °C) and at pH 6.0–8.0 (optimum 7.0–8.0). Gelatin, esterase and Tweens 20, 40, 60 and 80 were hydrolysed, but starch, protein, cellulose and casein were not. Phylogenetic analysis based on the 16S rRNA gene sequence indicated that strain HSG9 formed an independent lineage related to the family Flavobacteriaceae . The dominant fatty acids were iso-C15 : 0, iso-C17 : 0 3-OH and iso-C15 : 1 G. The respiratory quinone was identified as MK-6 and the polar lipids were phosphatidylethanolamine, three unidentified phospholipids and an unidentified lipid. The DNA G+C content was 37.1 mol%. The combined genotypic and phenotypic data indicated that strain HSG9 represents a novel species of a new genus within the family Flavobacteriaceae , for which the name Croceivirgaradicis gen. nov., sp. nov. is proposed. The type strain is HSG9 (=MCCC 1A06690=KCTC 52589).

  • †

    These authors contributed equally to this work.

  • The GenBank/EMBL/DDBJ accession numbers for 16S rRNA gene and genome sequences of strain Croceivirga radicis HSG9 are KY020995 and MTBC00000000, respectively.

  • Two supplementary figures are available with the online Supplementary Material.

© 2017 IUMS | Published by the Microbiology Society

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2017-09-12
2019-02-23
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