Transgenic crops

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Transgenic Crops:

Transgenic Crops Group #7 Jeremiah Johnson Anna Zaklikowski Jessica Frasier


Introduction Background Transgenic Crop – A plant that contains a gene or genes which have been artificially inserted instead of the plant acquiring them through pollination


Description Overview of the process for creating transgenic plants

History & Methods:

History & Methods 1983 Disarming of Agrobacterium tumefaciens (Ti plasmid) for use in gene transfers 1987 Invention of gene gun Present status

Applications & Advantages :

Applications & Advantages Use of bacterium Bacillus thuringiensis Natural Insecticide Targets specific receptors Cotton, Potatoes, Tomatoes Dutch Elm Disease Caused by fungus – Ceratocystis ulmi Controlled by bacterium Pseudomonas syringue Research in seedlings and mature trees Image:Results of insect infestation on Bt (right) and non-Bt (left) cotton bolls. Source: USDA

Applications & Advantages:

Applications & Advantages Flavr-Savr Tomatoes Kanamycin resistance (kan-r gene) Allows tomatoes to ripen longer on vine for fuller taste and still be transportable Round-up Herbicide Resistance Enable plants to tolerate glyphosate Cotton, corn, tobacco, tomatoes, soybeans

Risks & Concerns:

Risks & Concerns Loss of Biodiversity Superweeds Transgenic Crop Effectiveness

Risks and Concerns:

Risks and Concerns Human Health Risks Corporate Control of Food Supply


Conclusions Future possibilities Turfgrass for lawns Plant-based vaccines Transgenic crops offer hardier varieties Risks cannot be ignored

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