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INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY logo

Volume 67, Issue 12

gen. nov., sp. nov., a member of the family isolated from surface seawater Free

Abstract

A Gram-stain-negative, non-motile, aerobic and heterotrophic strain, designated 1-19b, was isolated from surface seawater in the Indian Ocean. The cells were ovoid or coccus (0.8–1.0 µm in diameter) with no flagellum. Activities of catalase and oxidase were positive. Growth was observed at salinity of 0.5–10 (%NaCl, w/v) with an optimum of 3–4, at pH 5–10 with an optimum of 7–8, and at 5–37 °C with an optimum of 28-35 °C. It accumulated poly--hydroxybutyrate granules inside the cell. Bacteriochlorophyll was absent. The respiratory quinone was Q-10 and the dominant fatty acid was summed feature 8 (C 7 and/or C 6). The major polar lipids comprised phosphatidylcholine, phosphatidylglycerol, phosphatidylethanolamine, diphosphatidylglycerol, an unidentified phospholipid and two unidentified polar lipids. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain 1-19b belonged to the family and formed a distinct monophyletic clade with ' JLT2003 and GRP21, exhibiting similarities of 94.7 and 92.2 %, respectively. The genomic DNA G+C content was 64.2 mol%. Based on the phenotypic, chemotaxonomic and genotypic data, strain 1-19b represents a novel species in a new genus of the family , for which the name gen. nov., sp. nov. is proposed, with the type strain 1-19b (=MCCC 1A11863=KCTC 52709).

  • Received:
  • Accepted:
  • Published Online:
Keyword(s): Indian ocean , Oceaniglobus indicus and taxonomy
© 2017 IUMS
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2017-12-01
2024-04-19
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Oceaniglobus indicus gen. nov., sp. nov., a member of the family Rhodobacteraceae isolated from surface seawater
Int J Syst Evol Microbiol 67, 4930 (2017); https://doi.org/10.1099/ijsem.0.002275
/content/journal/ijsem/10.1099/ijsem.0.002275
/content/journal/ijsem/10.1099/ijsem.0.002275
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