Table 2
Comparison of microbiological and clinical characteristics of HKU3 and those of closely related members of paenibacillus
| Characteristics | HKU3 | Paenibacillus macerans | Paenibacillus amylolyticus | Paenibacillus borealis | Paenibacillus alvei | Paenibacillus polymyxa |
|---|---|---|---|---|---|---|
| *Pinpoint colonies at 72 hours; †weakly positive. | ||||||
| V, variable. | ||||||
| Microbiological | ||||||
| Gram smear | Gram negative rod | Gram positive rod | Gram positive rod | Gram negative rod | Gram positive rod | Gram positive rod |
| Cell width ≥10 μm | – | – | – | – | V | – |
| Motility | Non–motile | Motile | Motile | Motile | Motile | Motile |
| Anaerobic growth | – | + | + | + | + | + |
| Growth at 50°C | +* | V | – | – | – | – |
| Growth at 65°C | – | – | – | – | – | – |
| Growth in 7% NaCl | – | – | – | – | – | – |
| Catalase production | +† | + | + | + | + | + |
| Nitrate reduction | + | + | + | – | – | + |
| Acid from glucose | – | + | + | + | + | + |
| Casein hydrolysis | – | – | +† | + | + | + |
| Voges-Proskauer reaction | – | – | – | – | + | + |
| Clinical | ||||||
| Cause of pseudobacteraemia | Yes | Yes | No | No | No | No |
| Isolation from clinical specimens | No | Yes | No | No | Yes | Yes |
