TY - JOUR T1 - Bacillus thuringiensis: An Environment Friendly Microbial Control Agent AU - Sarker, Nishat AU - Mahbub, Khandaker Rayhan JO - Research Journal of Biological Sciences VL - 6 IS - 11 SP - 615 EP - 626 PY - 2011 DA - 2001/08/19 SN - 1815-8846 DO - rjbsci.2011.615.626 UR - https://makhillpublications.co/view-article.php?doi=rjbsci.2011.615.626 KW - Insecticidal property KW -endotoxin KW -biopesticide KW -Bacillus thurengiensis KW -insect population KW -Dhaka AB - Bacillus thuringiensis (Bt) is an aerobic, gram positive, spore forming soil bacterium that produces different kinds of crystal inclusions during sporulation. These crystal inclusions are composed of one or more Crystal (Cry) and Cytolytic (Cyt) toxins which are also called δ-endotoxins or insecticidal crystal proteins. Some of these proteins are highly toxic to certain insects but they are harmless to most other organisms including vertebrates and beneficial insects. Since their insecticidal potential has been discovered, it has been produced commercially and accepted as a source of environment friendly bio-pesticide all over the world. In the present era of transgenic technology, insecticidal toxins of Bacillus thuringiensis (Bt) assume considerable significance in the production of insect resistant crops such as cotton, maize, potato, rice, etc. This review describes about biology of Bt toxin, recent progress in the development of Bt technology, evolution of resistant insect populations against Bt and management strategy. ER -