Introduction to Bt Crops The full form of bt is Bacillus thuringiensis.
Introduction to Bt Crops The full form of bt is Bacillus thuringiensis. It is a bacteria that naturally produces a crystal protein that is toxic to many pest insects. These are the crops that are genetically engineered to produce the same toxin as Bt in every cell of the plant so that pests do not destroy the plant. Bt crops are often found safe because Bt is a common organic form of insecticide. When it is used by farmers it degrades within a week and sometimes just in one day. The widespread use of Bt crops, pests became bt resistance. This has become a greater threat to organic agriculture. Types of Bt Crops The types of Bt crops are as follows:
About Bt Bt is a bacterium Bacillus thuringiensis which is a family of proteins originating from strains of the bacterium Bt. To affect the different types of insects there are more than 200 different types of Bt toxins. Basically, Bt is a spore-forming bacterium that produces crystals protein known as cry protein which is toxic to many species of insects. It is found almost everywhere in the world. It is also found in all types of terrain, including beaches, deserts, and tundra habitats. It is more significantly used in agriculture, especially in organic farming. It is also used in organic spraying programs and in transgenic crops. Bt is used to cause mortality in pests. The toxin of Bt gets dissolved in the high pH insect gut and becomes active. The toxins which were active attack the gut cells of the insect, punching holes in the lining. The spores of Bt dribbles out of the gut and germinate in the insect causing the death of the insect within a couple of days. Bt Gene Bt gene is a gene that is present in the bacterium of Bacillus thuringiensis which is a soil-dwelling bacterium. It naturally produces a toxin that is fatal to certain herbivorous insects. Since 1920, it has been utilized in organic farming in the form of insecticide spray. It is also a source of the gene used to genetically modify a number of crops so that they produce the toxin on their own to destroy various insect pests. Bt genes were first used by the Belgian company Plant Genetic Systems in the year 1985 to develop genetically modified crops with insect tolerance by expressing cry genes from Bt.