Bt-toxin is produced by the bacterium Bacillus thuringiensis. It is synthesized as an inactive crystalline protein called protoxin. In the alkaline environment of the pest's gut, the protoxin is hydrolyzed and activated into toxic forms. These activated toxins then bind to specific receptors in the gut epithelium, causing cell lysis and leading to the death of the pest.
What is true about Bt-toxin ?
Asked in Food Safety Officer 2019 · Topic: Main Plant Diseases (Role of Breeding and Biotechnology in Disease Resistance)
Show answer
Answer: B. The inactive protoxin gets converted into active form in the pest gut due to its alkaline pH.
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