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Volume 68, Issue 6

gen. nov., sp. nov., a novel stalked bacterium of the family Free

Abstract

A Gram-stain-negative, aerobic, ovoid or short rod-shaped bacterium with prosthecates and flagella, designated SY-3-19, was isolated from the surface seawater of the South China Sea, and subjected to a polyphasic taxonomic study. The isolate grew at 4–40 °C and pH 5.0–9.0 (optimum 28 °C and pH 6.5–7.5), and with 0.5–16.0 % (w/v) NaCl (optimum 4 %). It was positive for oxidase and catalase activity. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain SY-3-19 constituted a separate branch in the family , sharing the highest sequence similarities to the genera (91.9 %), (91.1 %) and (91.0–89.4 %). The sole respiratory quinone was ubiquinone-10 and the principal fatty acids (>10 %) were summed feature 8 (Cω7 and/or Cω6), summed feature 3 (C 7 and/or C 6), 11 methyl C 7 and C. The polar lipids of strain SY-3-19 consisted of phosphatidylglycerol, nine unidentified glycolipids and four unidentified lipids. The DNA G+C content was 60.9 mol%. On the basis of morphological, physiological and chemotaxonomic characteristics, together with the results of phylogenetic analysis, strain SY-3-19 is described as a novel species in a novel genus, for which the name gen. nov., sp. nov. (type strain SY-3-19=MCCC 1K03432=KCTC 62156) is proposed.

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Keyword(s): Marinicaulis flavus , Parvularculaceae , polyphasic taxonomy and seawater
© 2018 IUMS
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2018-06-01
2024-04-18
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Marinicaulis flavus gen. nov., sp. nov., a novel stalked bacterium of the family Parvularculaceae
Int J Syst Evol Microbiol 68, 2061 (2018); https://doi.org/10.1099/ijsem.0.002795
/content/journal/ijsem/10.1099/ijsem.0.002795
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