Table 3.
Key phenotypic characteristics that differentiate strain MCTG13d from its closest relative, Porticoccus litoralis IMCC2115T (36)b
| Characteristic | Strain 1 | Strain 2 |
|---|---|---|
| Cell morphology | Rod | Coccus |
| Flagellation | Single polar flagellum | No flagella |
| Optimal pH for growth | 7.5–8.5 | 7.0–8.0 |
| pH range for growth | 6.5–9.0 | 5.0–11.0 |
| Temp range for growth (°C) | 10–37 | 15–42 |
| Optimal growth temp (°C) | 15 | 20–25 |
| Maximum NaCl concn (%) at which growth occurs | 6.0 | 5.0 |
| NaCl range for growth (%) | 0.0–6.0 | 1.5–5.0 |
| Nitrate | + | − |
| Catalase activity | + | − |
| Utilization of | ||
| Mannitol | − | + |
| Fructose | − | + |
| Glucose | − | + |
| Arabinose | − | + |
| Indole production | + | − |
| DNA G+C (mol%) | 54.9 | 47.8 |
| Major fatty acids (% of total) | C16:1ω7c (31.5), C18:1ω7c (29.5), C16:0 (27.8) | ai-C15:0a (67.6), ai-C17:0a (14.4) |
a
The abbreviation “ai” denotes anteiso methyl branching.
b
Strains: 1, strain MCTG13d; 2, Porticoccus litoralis IMCC2115T. +, positive; −, negative.