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What is the difference between plant-incorporated
protectants produced throughgenetic engineering and those
produced through conventional breeding?
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Conventional breeding is a method in which genes for
pesticidal traits are introduced into a plantthrough
natural methods, such as cross-pollination. For a plant-
incorporated pesticide, one wouldbreed a plant that
produces a pesticide with a sexually compatible plant that
does not possess thisproperty but possesses other
properties of interest to the breeder, e.g., sweeter fruit.
Then, out of theoffspring, the breeder would choose the
offspring plant that produces the pesticide, and
thereforeexpresses the desired pesticidal trait, as well as
producing sweeter fruit. Genetically engineered plant-
incorporated protectants are created through a process that
utilizes several different modern scientific techniques to
introduce a specific pesticide-producing gene into aplant?s
DNA genetic material. For example, a desired gene that
produces a desired pesticides (e.g., the insecticidal
protein Bt from the bacterium, Bacillus thuringiensis) can
be isolated from anotherorganism, such as a bacterium, and
then inserted into a plant. The desired gene becomes part
of theplant?s DNA. The plant then expresses the
incorporated gene and produces the pesticidal protein as
itwould one of its own components.
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