lec7_gmo - Alternative Spring Breaks Alternative 7th Annual...

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Unformatted text preview: Alternative Spring Breaks Alternative 7th Annual 5K Saturday September 27 Cornell Plantations Arboretum Registration begins 9am Registration Race begins 10am Early registration: $12 ($10 student) Early $12 Must be received by September 19th Must Pre-order t-shirts Just $7 each! shirts (Will be delivered after the race) (Will Also must be received by September 19th Also Regular registration $14 ($12 student) Regular All profits will go to Alternative Spring Breaks, a service learning organization that gives Cornell students the ning chance to spend their spring break volunteering. Past trips include serving meals at an HIV/AIDS living center chance ude in Boston, tutoring juvenile detention center in Lake Placid, teaching classes at a domestic violence shelter in in aching West Virginia and much more! Pick up a registration form at the Public Service Center in 200 Barnes Hall or email [email protected] for more information. [email protected] for Plant Examples of GMO’s GMO Herbicide tolerance- potential to decrease Herbicide potential spraying of herbicides spraying Pesticide resistance- decrease spraying of Pesticide decrease pesticides pesticides Stress Tolerance- resistance to environmental Stress resistance stresses stresses Altering quality of food- nutrition, aesthretic Altering nutrition, aesthretic quality Nutrition Nutrition Engineering crops for increased nutrition Engineering Golden Rice – engineered for increased betacarotene- converted in body to vitamin A Engineered beans to alter carbohydrate level and increased protein levels increased Nutrigenomics- Understanding nutrition at Nutrigenomics Understanding molecular/ genetic level genetic Insect Resistance Bt crops- Corn, cotton, potatoes Bt Bacillus thuringiensis- bacterium that infects thuringiensis bacterium insects- Protein extracts developed into organic insects Protein pesticides- 95% of the organic pesticide market pesticides 95% in the late 1980’s in Plants modified to produce the Bt protein in leaves, available since 1996 leaves, Insect Resistance Lectins- Insecticidal proteins produced by some Lectins Insecticidal plants. A lectin from a wildflower species has lectin from been inserted into potatoes to deter potato beetles beetles Avidin- a protein from egg whites inserted into Avidin protein corn to stop storage pests corn Virus Resistance As in most animals, viruses are hard to treat in plants plants Viruses are genetic material in a protein coat which insets itself into cells which Papaya Ringspot Virus- Gene for Protein coat Ringspot Gene inserted into papayas- conferred resistance to inserted conferred the virus the Potentially useful for generating virus resistance in other plants as well. in Some plants have natural resistance to insects, fungi, and viruses fungi, Efforts are being made to transfer resistance from these plants to valuable crop plants from Herbicide Tolerance Generate Herbicide Tolerant crop plants to allow the use of broad spectrum herbicides on crop fields crop Varieties are often developed by Chemical companies and marketed with the herbicide companies Roundup Tolerance Roundup (Glyphosate)- A broad spectrum Roundup broad herbicide- disrupts biochemical pathway in the herbicide disrupts plant which produces a plant-specific essential plant specific amino acid. amino Breaks down quickly in soil, leaving no residue Breaks Roundup- ready Soybean, canola, cotton, corn, Roundup ready grass seed, wheat are all available grass Herbicide Tolerance Second generation Herbicide/crop combos are becoming available by other chemical companies becoming Often crops are engineered to produce terminator seeds- seeds produced by engineered terminator seeds plants are not viable. Grower needs to buy new seed each year. seed Stress Tolerance Stress Salt Tolerance in Rice- Rice varieties have been Salt Rice engineered to survive in high salt areas. Allow for growth in brackish water for Cold/ freezing tolerance- plants have been Cold/ plants engineered with “antifreeze” proteins from proteins Flounder to confer freezing tolerance- done in Flounder done strawberries strawberries ...
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This note was uploaded on 01/26/2009 for the course BIOPL 2400 taught by Professor Silva,t. during the Fall '08 term at Cornell University (Engineering School).

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