There is a new resolve, provoked by recent hikes in food prices around the world, to increase global food production in order to feed a rapidly growing population. In response to this, the biotechnology industry has made optimistic claims about the ability of genetically engineered (GE) crops—in which the plant DNA is changed using spliced genes that are often from unrelated organisms—to substantially increase farmers’ yields. Agricultural biotechnology has shown to increase crop production by seven- to tenfold in some developing countries, far beyond the production capabilities of traditional agriculture. Agricultural biotechnology is moving beyond input traits and is focused on delivering consumer health benefits.
Over 10 new soybean varieties with human health benefits moving toward commercialization. Bacillus thuringiensis (Bt) is a sporulating, Gram-positive facultative-aerobic soil bacterium. The spores contain crystals, predominantly comprising one or more Cry and ⁄ or Cyt proteins (also known as d-endotoxins) that have potent and specific insecticidal activity. Bt toxins have been used as topical pesticides to protect crops, and more recently the proteins have been expressed in transgenic plants to confer inherent pest resistance. While some scientists have argued that Bt transgenic crops produced tremendous results upon their deployment, others have shown disappointment over the likely development of pest resistant insect strains. The aim of this present review attempts to focus on the failure of Bacillus thuringiensis biotechnology in the light of the usefulness of biotechnology.
Key words: Bacillus thuringiensis (Bt), Biotechnology, Pest, Resistance.