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Question
The trigger for activation of toxin of Bacillus thuringiensisis:
The trigger for activation of toxin of Bacillus thuringiensisis:
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Solution
The correct option is A Alkaline pH of gut
Protoxin:
Bacillus thuringiensis produces a crystal protein which is a protoxin and remains inactive at acidic pH. It is an insecticidal toxin.
Activation of protoxin:
Crystal protoxin gets activated at an alkaline pH in the gut of the insectsdue to solubilisation of the crystals. The active toxin generates pores in themidgut epithelium of the insects, which results in the leakage of contentseventually leading to the death of the insect.
Final answer: Alkaline pH of gut
Summary:
Activation of toxin of Bacillus thuringiensis:
Delta endotoxin (crystal proteins) secreted by Bacillus thuringiensis is a protoxin and it is activated under the alkaline environment of the insect gut.
Final answer:Alkaline pH of gut
Protoxin:
Bacillus thuringiensis produces a crystal protein which is a protoxin and remains inactive at acidic pH. It is an insecticidal toxin.
Activation of protoxin:
Crystal protoxin gets activated at an alkaline pH in the gut of the insectsdue to solubilisation of the crystals. The active toxin generates pores in themidgut epithelium of the insects, which results in the leakage of contentseventually leading to the death of the insect.
Final answer: Alkaline pH of gut
Summary:
Activation of toxin of Bacillus thuringiensis:
Delta endotoxin (crystal proteins) secreted by Bacillus thuringiensis is a protoxin and it is activated under the alkaline environment of the insect gut.
Final answer:Alkaline pH of gut
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