Thioye A., Ben Ali Gam Z., Mbengue M., Cayoi J. L., Joseph-Bartoii M., Touré-Kane C., Labat Marc. (2017). Desulfovibrio senegalensis sp nov., a mesophilic sulfate reducer isolated from marine sediment. International Journal of Systematic and Evolutionary Microbiology, 67 (9), p. 3162-3166. ISSN 1466-5026.
Titre du document
Desulfovibrio senegalensis sp nov., a mesophilic sulfate reducer isolated from marine sediment
Thioye A., Ben Ali Gam Z., Mbengue M., Cayoi J. L., Joseph-Bartoii M., Touré-Kane C., Labat Marc
Source
International Journal of Systematic and Evolutionary Microbiology, 2017,
67 (9), p. 3162-3166 ISSN 1466-5026
Several strains of sulfate-reducing bacteria were isolated from marine sediments recovered from Hann Bay (Senegal). All were related to members of the genus Desulfovibrio. A strictly anaerobic, mesophilic and moderately halophilic strain designated BLaC1(T) was further characterized. Cells of strain BLaC1(T) stained Gram-negative and were 0.5 mu m wide and 2-4 mu m long, motile, rod-shaped and non-spore-forming. The four major fatty acids were anteiso-C-15 (: 0), iso-C-15 (: 0), iso-C-17 (:) (0) and anteiso-C-17 : 0. Growth was observed from 15 to 45 degrees C (optimum 40 degrees C) and at pH 5.5-8 (optimum pH 7.5). The salinity range for growth was 5-65 g NaCl l(-1) (optimum 30 g l(-1)). Yeast extract was required for growth. Strain BLaC1(T) was able to grow on lactate and acetate in the presence of sulfate as an electron acceptor. Sulfate, thiosulfate and sulfite could serve as terminal electron acceptors, but not fumarate, nitrate or elemental sulfur. The DNA G+C content was 55.8 mol%. 16S rRNA gene sequence analysis assigned strain BLaC1(T) to the family Desulfovibrionaceae; its closest relative was Desulfovibrio oxyclinae DSM 19275(T) (93.7 % similarity). On the basis of 16S rRNA gene sequence comparisons and physiological characteristics, strain BLaC1(T) is proposed as representing a novel species of Desulfovibrio, with the name Desulfovibrio senegalensis sp. nov. The type strain is BLaC1(T) (=DSM 101509(T)=JCM 31063(T)).
