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  • Title: Marinobacter salsuginis sp. nov., isolated from the brine-seawater interface of the Shaban Deep, Red Sea.
    Author: Antunes A, França L, Rainey FA, Huber R, Nobre MF, Edwards KJ, da Costa MS.
    Journal: Int J Syst Evol Microbiol; 2007 May; 57(Pt 5):1035-1040. PubMed ID: 17473254.
    Abstract:
    Two moderately halophilic Gram-negative bacteria were isolated from a sample taken from the brine-seawater interface of the Shaban Deep in the Red Sea. Phylogenetic analysis of the 16S rRNA gene sequence showed that these organisms represent a novel species of the genus Marinobacter. Cells of the new isolates formed non-pigmented colonies and were motile by means of a single polar flagellum. Strains SD-14B(T) and SD-14C grew optimally at 35-37 degrees C, in 5 % NaCl and at pH 7.5-8.0. The organisms were aerobic, but reduced nitrate to nitrogen under anaerobic conditions. Acid was produced from only a few carbohydrates. Ubiquinone 9 was the major respiratory quinone. The major fatty acids of strains SD-14B(T) and SD-14C were C(16 : 0), C(18 : 1)omega9c, summed feature 3 (C(16 : 1)omega6c/C(16 : 1)omega7c) and C(12 : 0) 3-OH. The DNA G+C contents were 55.9 and 55.7 mol%, respectively. On the basis of the phylogenetic analyses and physiological and biochemical characteristics, it is proposed that strains SD-14B(T) and SD-14C represent a novel species of the genus Marinobacter, with the name Marinobacter salsuginis sp. nov. The type strain is strain SD-14B(T) (=DSM 18347(T)=LMG 23697(T)).
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