Even though the nematicidal activity of Cry6A is lower than Cry5B, the diverse nematicidal properties to C. elegans observed in previous study make Cry6A great potential and advantage as a novel promising nematicide. In general, insec- ticidal activity of Bt mainly depends on lethal activity of crystal protein toxins. Almost no other activity of crystal protein except for lethal activity was observed in previous studies. In the present