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INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY logo

Volume 69, Issue 11

sp. nov., and reclassification of as comb. nov., and as comb. nov. Free

Abstract

Strain CECT 7735, a marine Gram-reaction negative, aerobic, non-motile bacterium, was isolated from coastal seawater in Valencia, Spain. Strain CECT 7735 is chemoorganotrophic, mesophilic, slightly halophilic, grows at 15–28 °C but not at 4 or 37 °C, requires seawater for growth and grows up to 6 % salinity. The major cellular fatty acid is summed feature 8 (Cω7 and/or Cω6). The G+C content of the genome is 55.7 mol%. Comparative analysis of the 16S rRNA gene sequence shows the strain is affiliated to the family , in the class , with highest similarities to species (97.0–97.5 %), species (96.5–97.3 %) and (96.5 %). Further phylogenomic analysis through the up-to-date-bacterial core gene (UBCG) set showed to be its closest relative. Average nucleotide identity and DNA–DNA hybridization values are lower than 85 and 21 %, respectively, with its phylogenetic relatives, suggesting that strain CECT 7735 represents a new species. The average amino acid identity value was over 70 % with the genome of the type strain of and with all those of species. These values, together with UBCG set trees, suggest that the new species and belong to the same genus and that should be reclassified as a species. We conclude that strain CECT 7735 represents a new species in the genus , for which we propose the name sp. nov. In addition, is reclassified as comb. nov. From the same phylogenomic study, it can be concluded that should be reclassified in the genus as comb. nov.

  • Received:
  • Accepted:
  • Published Online:
Keyword(s): AAI , ANI , Cognatishimia , marine bacteria , Pseudopelagicola , Rhodobacteraceae and Shimia
© 2019 IUMS
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2019-11-01
2024-05-13
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Shimia thalassica sp. nov., and reclassification of Pseudopelagicola gijangensis as Shimia gijangensis comb. nov., and Thalassobius activus as Cognatishimia activa comb. nov.
Int J Syst Evol Microbiol 69, 3405 (2019); https://doi.org/10.1099/ijsem.0.003629
/content/journal/ijsem/10.1099/ijsem.0.003629
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