Salinicola salarius is a Gram-negative, moderately halophilic, piezophilic bacterium that requires pressures of 102 MPa to grow.[1] The species was first isolated from a salt water sample from Anmyeondo, Korea and was formally described in 2007. S salarius cells are aerobic, Gram-negative, non-spore-forming rods (0.8–0.9x1.3–1.7 μm) that form yellow, smooth, translucent, circular colonies with entire edges. The oxidase- and catalase-positive cells are motile and possess lateral/polar flagella. Growth occurs at 10–45 °C (optimally at 25–30 °C) and at pH 5–10 (optimum pH 7–8). The strain is able to grow at salinities between 0 and 25% NaCl (optimum 10–20% NaCl).[2] [3]
S.I. Paul et al. (2021) isolated and identified salt tolerant Salinicola salarius from marine sponges (Niphates erecta, Hemimycale columella) of the Saint Martin's Island Area of the Bay of Bengal, Bangladesh.
Colony, morphological, physiological, and biochemical characteristics of Salinicola salarius are shown in the Table below.
| Test type | Test | Characteristics |
|---|---|---|
| Colony characters | Size | Medium |
| Type | Round | |
| Color | Yellowish | |
| Shape | Convex | |
| Morphological characters | Shape | Rod |
| Physiological characters | Motility | +|-|Growth at 6.5% NaCl|+ |
| Biochemical characters | Gram's staining | – |
| Oxidase | +|-|Catalase|+ | |
| Oxidative-Fermentative | Oxidative | |
| Motility | +|-|Methyl Red|+ | |
| Voges-Proskauer | – | |
| Indole | – | |
| H2S Production | – | |
| Urease | – | |
| Nitrate reductase | – | |
| β-Galactosidase | +|-| rowspan="6" |Hydrolysis of|Gelatin|–|-|Aesculin|+|-|Casein|–|-|Tween 40|–|-|Tween 60|–|-|Tween 80|–|-| rowspan="13" |Acid production from|Glycerol|–|-|Galactose|+|-|D-Glucose|+|-|D-Fructose|+ | |
| D-Mannose | +|-|Mannitol|–|-|N-Acetylglucosamine|+|-|Amygdalin|+|-|Maltose|V|-|D-Melibiose|+ | |
| D-Trehalose | +|-|Glycogen|+ | |
| D-Turanose | +|}Note: + = Positive, – =Negative, V =Variable (+/–)References} |