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- Volume 68, Issue 3
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f Characterization of Desulfovibrio salinus sp. nov., a slightly halophilic sulfate-reducing bacterium isolated from a saline lake in Tunisia
- Authors: Zouhaier Ben Ali Gam1 , Abdoulaye Thioye1,2 , Jean-Luc Cayol1 , Manon Joseph1 , Guy Fauque1 , Marc Labat1
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1 1Laboratoire de Microbiologie IRD, Aix-Marseille Université, Université du Sud Toulon-Var, CNRS/INSU, IRD, MI0 UM110, 163 avenue de Luminy, case 925, F-13288 Marseille cedex 9, France 2 2Laboratoire de Microbiologie Appliquée et de Génie Industriel, Ecole Supérieure Polytechnique, Université Cheikh Anta Diop, BP 5005 Dakar-Fann, Dakar, Sénégal
- *Correspondence: Marc Labat [email protected]
- First Published Online: 12 January 2018, International Journal of Systematic and Evolutionary Microbiology 68: 715-720, doi: 10.1099/ijsem.0.002567
- Subject: New Taxa - Proteobacteria
- Received:
- Accepted:
- Cover date:




Characterization of Desulfovibrio salinus sp. nov., a slightly halophilic sulfate-reducing bacterium isolated from a saline lake in Tunisia, Page 1 of 1
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A novel slightly halophilic sulfate-reducing bacterium, designated strain P1BSRT, was isolated from water of a saline lake in Tunisia. Strain P1BSRT had motile (single polar flagellum), Gram-negative, rod-shaped, non-spore-forming cells, occurring singly or in pairs. Strain P1BSRT grew at temperatures between 15 and 45 °C (optimum 40 °C), and in a pH range between 6 and 8.5 (optimum pH 6.7). The strain required NaCl for growth (1 % w/v), and tolerated high NaCl concentration (up to 12 % w/v) with an optimum of 3 % (w/v). Sulfate, thiosulfate and sulfite served as terminal electron acceptors, but not elemental sulfur, fumarate, nitrate and nitrite. Strain P1BSRT utilized lactate, pyruvate, formate, d-fructose and glycerol as carbon and energy sources. The main cellular fatty acid was C16 : 0 (50.8 %). The genomic DNA G+C content was 47.7 mol%. Phylogenetic analysis of 16S rRNA gene sequence similarity indicated that strain P1BSRT was affiliated to the genus Desulfovibrio , with the type strains Desulfovibrio salexigens (96.51 %), Desulfovibrio zosterae (95.68 %), Desulfovibrio hydrothermalis (94.81 %) and Desulfovibrio ferrireducens (94.73 %) as its closest phylogenetic relatives. On the basis of genotypic, phenotypic and phylogenetic characteristics, it is proposed to assign strain P1BSRT to a novel species of the genus Desulfovibrio , Desulfovibrio salinus sp. nov. The type strain is P1BSRT (=DSM 101510T=JCM 31065T).
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The Genbank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain P1BSRT is KT767983.
- Keyword(s): sulfate-reducing bacterium, Desulfovibrio, Tunisia, slightly halophilic, saline lake
© 2018 IUMS | Published by the Microbiology Society
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