TABLE 1.
Toxicity of Bt Cry proteins to neonate larvae of A. gemmatalis and C. includensa
| Protein |
A. gemmatalis |
C. includens |
||||
|---|---|---|---|---|---|---|
| Mortality |
GI50 (FL95%) slope | Mortality |
GI50 (FL95%), slope | |||
| LC50 (FL95%), slope | LC90 (FL95%) | LC50 (FL95%), slope | LC90 (FL95%) | |||
| Cry1Ac | 2.0 (0.9–3.3), 0.9 ± 0.2 | 23 (13–58) | <1.4 | 31 (23–41), 1.6 ± 0.2 | 119 (81–215) | 8.9 (4.9–16.2), 1.4 ± 0.5 |
| Cry1Fa | 4.9 (3.7–6.6), 1.8 ± 0.3 | 17 (12–31) | <1.4 | 4.7 (3.5–6.1), 1.9 ± 0.3 | 15 (11–27) | <1.4 |
| Cry1Ca | 8.9 (6.7–11.6), 1.3 ± 0.1 | 49 (34–82) | <1.4 | 3.8 (2.7–5.1), 1.2 ± 0.2 | 23 (16–40) | <1.4 |
| Cry2Aa | 87 (65–116), 1.1 ± 0.1 | 607 (404–1,060) | <1.4 | 9.1 (6.9–11.8), 1.3 ± 0.1 | 47 (33–79) | 2.0 (1.6–2.5), 2.6 ± 0.6 |
a
Concentrations are expressed as ng/cm2. LC50, 50% lethal concentration; FL95%, fiducial limits at the 95% level; LC90, 90% lethal concentration; GI50, 50% growth inhibition. The GI50 and slope were not calculated when the growth inhibition response was >50% at the lowest tested rate of 1.4 ng/cm2.