DNATechnology160-page11 - bacterial infections Many...

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Biotechnology - 11 Plant Uses of Biotechnology Agrobacterium tumefaciens , a natural tumor-causing bacterium of plants, is the host bacterium for much DNA technology in plants. The tumor genes are removed, and a plasmid, the Ti plasmid, incorporates desired new genes. The altered Agrobacterium "infects" a tissue-cultured plant, which may express the inserted genes normally. Genes can also be "shot" directly into plant cells with a "DNA gun". The DNA "gun" injects coated DNA particles into the target plant cells. DNA technology has been used to help plants be resistant to frost, wilting, herbicides such as round-up and to resist insect and fungal pests and viral and
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Unformatted text preview: bacterial infections. Many transgenic food crops have been approved. It is estimated that as much as 70% of the foods on our grocery shelves contain ingredients from crops that are genetically modified. The vast majority of these foods come from recombinant corn and soybean products. We eat almost no recombinant corn or soybeans as whole foods, but use oils processed from corn and soy, and high-fructose corn syrup from corn in hundreds of food products. Wilt-resistant Carnations Round-Up resistant Petunia Weevil-resistant peas...
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