An engineered Cry1AMod toxin lacking helix α-1 has been reported,
which does not bind with the receptor-cadherin and therefore kills
even insects that are resistant to the parent toxin Cry1Ab (Mu๑๓z-
Garay et al., 2009). New Bt strains using a proteomics method can be
screened for the presence of the novel toxin Cry60Ba from Bt serovar
malayensi. Incidentally, this is also a mosquitocidal toxin (Sun and
Park, 2010). A recent report showed that the isolated strain LLP29
from the phylloplane of Magnolia denudate, produces a novel toxin
(Cyt1Aa6) which is lethal to mosquito larvae (Zhang et al., 2010).
This has far reaching implications to control mosquitoes.