In Bt cotton,the Bt toxin present in plant ti | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) The correct answer is $C$. Soil bacterium $Bacillus$ $thuringiensis$ produces proteins that kill certain insects like lepidopterans (tobacco budwo

Vedclass · Accepted Answer

alkaline $pH$ of the insect gut

Vedclass · Answer

(C) The correct answer is $C$. Soil bacterium $Bacillus$ $thuringiensis$ produces proteins that kill certain insects like lepidopterans (tobacco budworm,armyworm),coleopterans (beetles),and dipterans (flies,mosquitoes). $B. thuringiensis$ forms protein crystals containing a toxic insecticidal protein. This toxin does not kill the bacterium because it exists as an inactive protoxin. Once an insect ingests the plant tissue,the protoxin is converted into an active form of toxin due to the alkaline $pH$ of the insect's alimentary canal. The activated toxin binds to the surface of midgut epithelial cells and creates pores,which cause swelling and lysis,eventually leading to the death of the insect.

In $Bt$ cotton,the $Bt$ toxin present in plant tissue as protoxin is converted into active toxin due to

Similar Questions

The $Bt$ (Bacillus thuringiensis) strain was developed as a ...........

Identify the nematode from the following options.

Tobacco plants resistant to a nematode have been developed by the introduction of $DNA$ that produces (in the host cells):

For which variety of Indian rice was the patent filed by a $USA$ company?

The process of $RNA$ interference is used for the development of pest-resistant plants against . . . . . . .

Vedclass Test Series

Exam Paper Generator

Online Exam Module