Table 2 Physiological and biochemical characteristics of Pseudomonas spp. isolates from Saudi Arabia compared with reference strains of P. mediterranea (CFBP 5447T) and P. viridiflava (PV273 and CFBP 2107T).
Biochemical test | Isolated strains | Pseudomonas spp. reference strains | ||
|---|---|---|---|---|
Group I | Group II | P. mediterranea (CFBP5447T) | P. viridiflava (PV273 and CFBP2107T) | |
Number of isolates | 12 | 4 | 1 | 1 |
Gram reaction | − | − | − | − |
Fluorescence on King’s B | − | + | − | + |
Levan production | − | − | − | − |
Oxidase reaction | + | − | + | − |
Pectolytic activity (potato soft rot) | − | + | − | + |
Arginine dihydrolase | + | − | + | − |
Tobacco hypersensitivity | + | + | + | + |
Growth at 37 °C | + | + | + | + |
Nitrate reduction | + | + | + | + |
Lecithinase | − | + | − | + |
Gelatine hydrolysis | + | + | + | + |
Poly-β-hydroxybutyrate accumulation | + | + | + | + |
