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Genetically Modified Plants

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Ashaka Patel

on 8 April 2013

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Transcript of Genetically Modified Plants

Genetically Modified Plants Genetically modified plants have been altered in a laboratory to resist pests, or to yield more crop. For example, Bt corn was created by adding a gene, from the biological pesticide, Bacillus thuringiensis, that combats insects. GM plants are the best alternative to toxic pesticides Dioxins and furans are unintentionally created toxins, which are produced during the manufacture of pesticides. Pesticide Drift Destroys species other than the target species Pesticides Over 98% of sprayed pesticides reach a different destination than the targeted plant. These toxins are mainly found in meat and dairy, as the chemicals in pesticides accumulate in fat cells. The toxins are known to cause cancers and other diseases. Destroys ecosystems When a pesticide is sprayed, the wind sends it to a different location, contaminating it. Also, pesticides can be brought into rivers with rain water. Pesticides are used to destroy pests, especially ones that target plants. Pesticides are water and fat soluble (may vary for different types of pesticide), which makes them very dangerous. Genetically modified plants Pest resistant Herbicide Tolerance Inexpensive Drought and Salinity Tolerance Nutrition A Solution? Why Choose GM plants? A major issue are the mass deaths of bees, who are necessary in pollination of crops. However, they are being killed by chemical poisoning Lowers need of pesticides, as the plant is modified to kill the pest, when it begins to consume the crop. Farmers save money from using large amounts pesticides
GM crops such as B.T. corn help eliminate need of pesticides, so contamination of water, and other harms to the environment are greatly reduced. Herbicides in farms are used in large quantities to kill weeds. The crop can also be damaged by the chemicals. But GM plants are resistant to herbicides. This vastly reduces the need for herbicides for weeds, and lowers the chances of damage to the environment, by run-off when it rains, or pesticide drift. Pests can develop a resistance to pesticides, which would mean that new pesticides would have to be created. Gm plants are engineered to yield more crop, so they are cheaper than conventional crop. Drought and salinity resistance makes the crop sturdier and stronger. Also, as the population grows, farms will have to be created in areas where the land is not very fertile, so, despite droughts and soil with high concentrations of salt, crops would still be able to grow. GM crops can have a higher nutritional value, than conventional crop. Nutritional enhancement increases the amount of a particular nutrient in a crop. For example, Golden rice is a modified white rice crop, with an increased amount of vitamin A, which was a gene inserted from a daffodil plant. Blindness due to Vitamin A deficiency is common in third world countries and Golden rice was funded by the Rockefeller Foundation, who hope to donate the rice to a third world country to help battle malnutrition. White rice Golden rice crops also have a longer shelf life, such as tomatoes that last longer and taste better. Crops with medical benefits are also being developed. For example, edible vaccines, which are plants genetically engineered to produce chemicals in certain vaccines or agents which battle virus/bacteria. E.g. bananas with bacterial or rotavirus antigens. The plants could be grown locally and cheaply. This would especially benefit third world countries. GM crops provide many benefits to humans, and the environment Show your support of GM crops, by purchasing GM foods and raising awareness of the dangers of pesticides and the best alternative: GM crops First, Learn about what GM crops protect against Convinced Yet?
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