Physiological features of Halomonas lionensis sp. nov., a novel bacterium isolated from a Mediterranean Sea sediment
| Type | : | ACL |
|---|---|---|
| Nature | : | Production scientifique |
| Au bénéfice du Laboratoire | : | Non |
| Statut de publication | : | Publié |
| Année de publication | : | 2014 |
| Auteurs (7) | : | GABOYER F VANDENABEELE-TRAMBOUZE O CAO J CIOBANU Maria-cristina JEBBAR M LE ROMANCER M ALAIN K |
| Revue scientifique | : | Research in Microbiology |
| Volume | : | 165 |
| Fascicule | : | 7 |
| Pages | : | 490-500 |
| DOI | : | 10.1016/j.resmic.2014.07.009 |
| URL | : | - |
| Abstract | : | A novel halophilic bacterium, strain RHS90(T), was isolated from marine sediments from the Gulf of Lions, in the Mediterranean Sea. Its metabolic and physiological characteristics were examined under various cultural conditions, including exposure to stressful ones (oligotrophy, high pressure and high concentrations of metals). Based on phylogenetic analysis of the 16S rRNA gene, the strain was found to belong to the genus Halomonas in the class Gammaproteobacteria. Its closest relatives are Halomonas axialensis and Halomonas meridiana (98\% similarity). DNA-DNA hybridizations indicated that the novel isolate is genotypically distinct from these species. The DNA G + C content of the strain is 54.4 mol\%. The main fatty acids (C-18:1 omega 7c, 2-OH iso-C-15:0, C-16:0 and/or C-19:0 cyclo omega 8c), main polar lipids (diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, phosphatidylcholine and an unidentified phosphoglycolipid) and major respiratory quinone (ubiquinone Q9) were determined. The novel isolate is heterotrophic, mesophilic, euryhaline (growth optimum ranging from 2 to 8\% w/v NaCl) and is able to grow under stressful conditions. The strain accumulates poly-beta-hydroxyalkanoates granules and compatible solutes. Based on genotypic, chemotaxonomic and phenotypic distinctiveness, this isolate is likely to represent a novel species, for which the name Halomonas lionensis is proposed. The type strain of H. lionensis is RHS90(T) (DSM 25632(T) = CIP 110370(T) = UBOCC 3186(T)). (C) 2014 Institut Pasteur. Published by Elsevier Masson SAS. All rights reserved. |
| Mots-clés | : | Halomonas; Taxonomy; Environmental adaptation; Metal tolerance; Poly-beta-hydroxyalkanoate; Compatible |
| Commentaire | : | - |
| Tags | : | - |
| Fichier attaché | : | - |
| Citation | : |
Gaboyer F, Vandenabeele-Trambouze O, Cao J, Ciobanu M-C, Jebbar M, Le Romancer M, Alain K (2014) Physiological features of Halomonas lionensis sp. nov., a novel bacterium isolated from a Mediterranean Sea sediment. Res Microbiol 165: 490-500 | doi: 10.1016/j.resmic.2014.07.009
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