Microbes in Human WelfareHard
Question
Cry-I endotoxins obtained form Bacillus thuringiensis are effective against
Options
A.mosquitoes
B.files
C.nematodes
D.boll worms
Solution
Insect resistant transgenic plants contain either a gene from the bacterium Bacillus thuringiensis or some other gene. The Cry gene of Bacillus thuringiensis produces a protein, which forms crystalline inclusion in the bacterial spores. These crystal proteins are responsible for tte insecti cidal activities of the bacterial strains. Cry-I endotoxins are effective against Lepidoplera (eg, flies). Cry-V and Cry-VI proteins are effective against nematodes. Cry-IV proteins are effec tive against Diptera (mosquitons ). When Cry proteins are ingested by insects, they are dis solved in the alkaline juices preesnt in the midgut lumen. The gut proteases process them hydrolytically to release the core toxic fragments. The toxic Fragments are believed to bind to specifi high affinity receotors present in the brush border of midgut epithelial cells and eventual lysis.
Create a free account to view solution
View Solution FreeMore Microbes in Human Welfare Questions
Which one of the following is not used in organic farming ?...Inflammatory response, in allergy is caused by the aelease of...An important step in the manufacture of pulp for paper industry from the woody tissues of plants is the...Farmers need to apply less nitrogenous fertilizers to fields if one of these plants are present :...In India, we findmangoes with different flavours, colours, fibre content , sugar content and even shelf life. The larg v...