Uses of Bt insect resistance in agriculture

Masters
Essay
Science
Pages 5 (1255 words)
Download 0
Bt can very well stand for biotechnology as the two have been tied closely by science over the past two decades, these two letters actually stand for something that farmers across the globe have known to be a very reliable anti-pest tool - Bacillus thuringiensis…

Introduction

Uses of Bt insect resistance in agriculture

This remarkable finding which happened in 1911 was not the first time Bt went under close inspection; in the Far East, ten years before, a Japanese scientist who was investigating the almost instantaneous death of silkworms first discovered it.
More than a century has now passed since Bt's discovery, and for more than half of it, Bt has been used as a natural insecticide, being sprayed onto crops. (Shelton 2008) But just how does Bt work in the first place'

Unlike Dichlorodiphenyltricloroethane, which has been known to be a three-letter acronym for the words notorious killer because of its infamousness in inflicting damage to organisms it should not, Bt is not a contact poison. Bt has to be eaten first before it can poison any unsuspecting insect. B. thuringiensis has spores which contain crystal proteins or cry proteins. When ingested by an insect, the active insecticidal crystal protein or (ICP) breaks down in the insect's gut and releases a toxin called delta-endotoxin. This delta-endotoxin then reacts with certain receptors on the intestinal lining and makes pores causing the leakage of its contents and paralyzation of the insect's digestive system resulting to insect death. The killing is a slow process that may take hours or even days. (Shelton 2008) However, it must be noted that because of the paralysis of the insect’s digestive system, the insect soon stops eating. Immediately dead or not, the goal of saving the crops from mass mastication of unwanted living forms is definitely achieved. ...
Download paper
Not exactly what you need?

Related papers

Global Warming Master Essay
Such changes in precipitation then serve to increase the frequency and intensity of extreme weather events like floods, droughts, heat waves, hurricanes and tornados. However, other scientists maintain that man and his carbon dioxide emissions are not solely to blame for the temperature changes, that prediction of these changes is has yet to become 100 percent accurate, and that the perceived…
Human Involvement in Hazardous Evolution
Number of species that evolved resistance to a minimum of one insecticide had gone beyond 500 by the year 1990. It takes on an average 10 years for a species to develop resistance to a particular drug (1786, 7 September 2001, Science's Compass).…
Genetically Engineered Crops
They have devoted considerable sums of money to biotechnology research (Gottweis 1998), taken significant strides to deregulate the industry (Wright 1994), and sought to promote the spread of U. S.-style intellectual property rights in the World Trade Organization. The U. S. government in particular has also promoted the dissemination of agricultural biotechnology in developing countries through…
Drosophila
Mutant flies, with fault in any of numerous thousand genes are presented, and the entire genome has lately been sequenced.…
Genetically Modified Foods Essay
Other crops grown-up commercially or field-experienced are a sweet potato defiant to a virus that could destroy the majority of the African crop, rice with enlarged iron and vitamins that might assuage chronic undernourishment in Asian countries, and a diversity of plants proficient to stay alive weather extremes. During 2003, countries that cultivated 99% of the global Genetic Modified crops were…
Genetically Modified Foods
And the many varieties of apples we eat today were produced through genetic modification.…
Uses of Bt insect resistance in agriculture
Uses of Bt insect resistance in agriculture …