TABLE 3.

Toxicity of Cry1Ab protoxin and activated toxin on susceptible and resistant populations of P. xylostella

PopulationToxinLC50 (95% FL) (nM)Toxicity ratioa
LAB-UKCry1Ab protoxin0.23 (0.07-0.54)
Cry1Ab toxin0.092 (0.015-0.24)
ROTHCry1Ab protoxin0.07 (0.015-0.2)
Cry1Ab toxin0.015 (0.0015-0.054)
Cry1Ab-SELCry1Ab protoxin444 (214-1117)12
Cry1Ab toxin37 (12-73)
  • a LC50 of protoxin/LC50 of activated toxin.