Research Article
Characterization of Potential Plant Growth Promoting Rhizobacteria Isolated from Maize (Zea mays L.) in Central and Northern Benin (West Africa)
Table 2
Morphological and biochemical characteristics of rhizobacteria isolated from samples collected in the central and northern Benin.
| Test | Bacillus | Pseudomonas | Serratia | polymyxa | pantothenticus | anthracis | thuringiensis | circulans | cichorii | putida | syringae | marcescens |
| Bacteria shape | Rod | Rod | Rod | Rod | Rod | Rod | Rod | Rod | Rod | Gram reaction | + | + | + | + | + | − | − | − | − | Catalase production | + | + | + | + | + | + | + | + | + | Spore position | Central | Terminal | Central | Central | Central | nd | nd | nd | nd | Growth on anaerobic condition | + | + | + | + | + | nd | nd | nd | nd | Acid from glucose | + | + | + | + | + | nd | nd | nd | nd | Gas from glucose | + | − | − | − | − | nd | nd | nd | nd | Mobility | + | + | − | + | − | + | + | + | + | Delay on glucose | − | − | − | − | − | nd | nd | nd | nd | Voges-Proskauer | + | − | + | + | − | nd | nd | nd | nd | Indole production | − | − | − | − | − | nd | nd | nd | − | Citrate utilization | − | − | − | − | − | nd | nd | nd | + | Mannitol utilization | nd | nd | nd | nd | nd | + | + | + | + | Starch hydrolysis | + | + | + | + | + | nd | nd | nd | nd | Casein hydrolysis | + | + | + | + | − | nd | nd | nd | + | Gelatin liquefaction | + | + | + | + | + | nd | nd | nd | + | Lecithin hydrolysis | + | − | + | + | − | + | − | − | nd | Urease hydrolysis | − | − | − | − | − | nd | nd | nd | − | DNAse activity | nd | nd | nd | nd | nd | nd | nd | nd | + | Nitrate reduction | + | + | + | + | − | nd | nd | nd | nd | Growth at 45°C | + | + | − | + | + | nd | nd | nd | nd | Growth at 55°C | − | − | − | − | − | nd | nd | nd | nd | Growth at 65°C | − | − | − | − | − | nd | nd | nd | nd | Fluorescence à 360 nm | nd | nd | nd | nd | nd | + | + | + | nd | Colony on nutrient agar | nd | nd | nd | nd | nd | Whitish-Shiny | Whit-Shiny | Whitish-Shiny | nd | Oxidase production | nd | nd | nd | nd | nd | + | + | − | nd | Glucose fermentation | nd | nd | nd | nd | nd | − | − | − | + | Lactose fermentation | nd | nd | nd | nd | nd | − | − | − | − | Gas production | nd | nd | nd | nd | nd | − | − | − | − | H2S production | nd | nd | nd | nd | nd | − | − | − | − | Growth on Cétrimide (37°C) | nd | nd | nd | nd | nd | − | + | + | nd | Growth on Cétrimide (42°C) | nd | nd | nd | nd | nd | − | + | − | nd | Growth on MacConkey | nd | nd | nd | nd | nd | nd | nd | nd | + | Pigment production | nd | nd | nd | nd | nd | nd | nd | nd | Red |
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+ = positive; − = negative; nd = no determined.
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