Table 1 Phenotypic and genotypic characters of Serratia marcescens
Characters | Description |
|---|---|
Colony morphology | Round, smooth, convex (2–5 mm dia.) colonies with red pigment |
Microscopic features | single Gram -ve short rods with 0.5-0.8 μm dia and 0.9-2.0 μm length |
Biochemical characters | Carbohydrate utilization: +ve for dextrose, fructose, mannose, maltose, mannitol, sucrose and trehalose and –ve for arabinose, galactose, rahmnose, raffinose and melibiose |
Enzyme activity: +ve for catalase and oxidase, −ve for lactose and starch hydrolysis | |
Physiological characters | Temperature tolerance 4–45°C (opt. 25°C), Produces pigment till 35°C, pH tolerance 3–14 (opt. 5–7), salt tolerance up to 20% |
Molecular characters | 98.8% similarity with Serratia marcescens N4-5 |
Accessions | Bacterial accession no. MTCC 4822 |
Nucleotide sequence no. EF035134 |