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प्रश्न
Which one of the following factors is responsible for activation of protoxin into active Bt toxin of Bacillus thuringiensis?
पर्याय
Body temperature
Moist surface of midgut
Alkaline pH of gut
Acidic pH of stomach
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उत्तर
Alkaline pH of gut
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|
The bacterium Bacillus thuringiensis serovar israelensis (Bti) is commercially prepared in various formulations such as liquid, water dispersible granules, powders, and pellets. It is used as a larvicide all over the world due to its ability to produce a toxic protein that primarily targets the larvae of mosquitoes. In Sweden, Bti has been applied on a large scale in the form of commercially available granular formulation Vecto Bac G (Valent BioScience, USA). The applications have taken place in the lower Dalalven River Area to control mass outbreaks of the floodplain mosquito Aedes sticticus. |
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