TABLE 1.
Comparison of the growth efficiency of B. thuringiensis strains in four media
| Strain | No. of CFU/mla in:
|
|||
|---|---|---|---|---|
| GYSb | Peptonized milk | G-Tris | Nutrient broth | |
| 4Q7 | 5.3 × 107 a | 8.0 × 108 | 3.4 × 108 | 7.0 × 106 |
| 4Q7/pHT3101 | 4.3 × 107 b | 5.9 × 108 | 3.1 × 108 | 2.2 × 106 |
| DSM 2803 | 9.7 × 107 c | 5.2 × 108 | 5.8 × 107 | 9.7 × 105 |
| NB176 | 3.8 × 107 d | 2.2 × 108 | 3.6 × 107 | 4.1 × 106 |
| 4Q7/pPFT3A | 3.5 × 107 e | 1.4 × 108 | 1.9 × 107 | 4.1 × 105 |
| 4Q7/pPFT3As | 2.8 × 107 d | 1.2 × 108 | 1.1 × 107 | 3.4 × 105 |
Standard deviations (±) were as follows: GYS (4Q7, 2.5 × 106; 4Q7/pHT3101, 2 × 106; DSM 2803, 1.1 × 106; NB176, 2.9 × 106; 4Q7/pPFT3A, 4.6 × 106; 4Q7/pPFT3As, 2.0 × 106), peptonized milk (4Q7, 2.5 × 108; 4Q7/pHT3101, 1.8 × 107; DSM 2803, 1.9 × 107; NB176, 1.7 × 107; 4Q7/pPFT3A, 8.9 × 105; 4Q7/pPFT3As, 1.1 × 106), G-Tris (4Q7, 4.4 × 106; 4Q7/pHT3101, 1.9 × 106; DSM 2803, 4.5 × 106; NB176, 9.2 × 105; 4Q7/pPFT3A, 8.9 × 105; 4Q7/pPFT3As, 1.1 × 106), and nutrient broth (4Q7, 3 × 105; 4Q7/pHT3101, 1.3 × 105; DSM 2803, 1.4 × 104; NB176, 2.9 × 105; 4Q7/pPFT3A, 4.3 × 104; 4Q7/pPFT3As, 4.3 × 104).
Values followed by different letters were significantly different at P = 0.05.