1/13/2024 0 Comments Download worms insectsThe chemical control of pests was efficacious and attractive during the forties and fifties of the last century. It is evident that the world food supply depends on effective protection of crops and animals from pests 1, 2, 3, 4. Billions of dollars are spent globally each year for pest control and a large sum of money is lost due to inadequate control of pests. Production of agricultural crops are at risk due to the incidence of pests, especially weeds, pathogens and animal pests. The bioassays using transgenic corn plants against corn borer (Sesamia cretica) revealed that ~50% of the insects reared on transgenic corn plants died, suggesting that transgenic maize plants have enhanced resistance against S. The functional integrity and expression of chitinase in progenies of the transgenic plants were confirmed by insect bioassays. Insect chitinase transcripts and proteins were expressed in transgenic maize plants. Transgenic maize plant system was used to improve its tolerance against insects. In this study, an insect chitinase cDNA from cotton leaf worm ( Spodoptera littoralis) has been synthesized. The ability of chitinases to attack and digest chitin in the peritrophic matrix or exoskeleton raises the possibility to use them as insect control method. Targeting chitin associated with the extracellular matrices or cell wall by insect chitinases may be an effective approach for controlling pest insects and pathogenic fungi. Due to the importance of chitinolytic enzymes for insect, nematode and fungal growth, they are receiving attention concerning their development as biopesticides or chemical defense proteins in transgenic plants and as microbial biocontrol agents.
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