Future of GMOs in Agriculture


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Uploaded on Jan 13, 2022

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PPT on Future of GMOs in Agriculture.

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Future of GMOs in Agriculture

FUTURE OF GMOS IN AGRICULTURE Introduction • Many people wonder what impacts GMO crops have on our world. GMO (genetically modified organism) is the common term consumers and popular media use to describe a plant, animal, or microorganism that has had its genetic material (DNA) changed using technology that generally involves the specific modification of DNA, including the transfer of specific DNA from one organism to another Source: www.fda.gov Why do farmers use GMO crops? Most of the GMO crops grown today were developed to help farmers prevent crop loss. The three most common traits found in GMO crops are: • Resistance to insect damage • Tolerance to herbicides • Resistance to plant viruses Source: www.fda.gov How it works? • For GMO crops that are resistant to insect damage, farmers can apply fewer spray pesticides to protect the crops. GMO crops that are tolerant to herbicides help farmers control weeds without damaging the crops. • When farmers use these herbicide-tolerant crops they do not need to till the soil, which they normally do to get rid of weeds. This no-till planting helps to maintain soil health and lower fuel and labor use. Source: www.fda.gov Example of GMO crop • The GMO papaya, called the Rainbow papaya, is an example of a GMO crop developed to be resistant to a virus. When the ringspot virus threatened the Hawaii papaya industry and the livelihoods of Hawaiian papaya farmers, plant scientists developed the ringspot virus-resistant Rainbow papaya. Source: www.fda.gov Do GMOs have impacts beyond the farm? • The most common GMO crops were developed to address the needs of farmers, but in turn they can help foods become more accessible and affordable for consumers. Some GMO crops were developed specifically to benefit consumers. Source: www.fda.gov Benefits of Genetically Modified Organisms • Agricultural plants are one of the most frequently cited examples of genetically modified organisms (GMOs). • Some benefits of genetic engineering in agriculture are increased crop yields, reduced costs for food or drug production, reduced need for pesticides, enhanced nutrient composition and food quality, resistance to pests and disease, greater food security, and medical benefits to the world's growing population. Source: www.nature.com Examples of GMOs Resulting from Agricultural Biotechnology Herbicide tolerance Soybean Glyphosate herbicide (Roundup) tolerance conferred by expression of a glyphosate-tolerant form of the plant enzyme 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) isolated from the soil bacterium Agrobacterium tumefaciens, strain CP4 Insect resistance Corn Resistance to insect pests, specifically the European corn borer, through expression of the insecticidal protein Cry1Ab from Bacillus thuringiensis Altered fatty acid composition Canola High laurate levels achieved by inserting the gene for ACP thioesterase from the California bay tree Umbellularia californica Virus resistance Plum Resistance to plum pox virus conferred by insertion of a coat protein (CP) gene from the virus Source: www.nature.com Potential GMO Applications • Many industries stand to benefit from additional GMO research. For instance, a number of microorganisms are being considered as future clean fuel producers and biodegrades. • In addition, genetically modified plants may someday be used to produce recombinant vaccines. In fact, the concept of an oral vaccine expressed in plants for direct consumption by individuals is being examined as a possible solution to the spread of disease in underdeveloped countries, one that would greatly reduce the costs associated with conducting large-scale vaccination campaigns. Source: www.nature.com Risks and Controversies Surrounding the Use of GMOs • After all, such alterations can change the organism's metabolism, growth rate, and/or response to external environmental factors. These consequences influence not only the GMO itself, but also the natural environment in which that organism is allowed to proliferate. • Potential health risks to humans include the possibility of exposure to new allergens in genetically modified foods, as well as the transfer of antibiotic-resistant genes to gut flora. Source: www.nature.com Risks and Controversies Surrounding the Use of GMOs cont. • Horizontal gene transfer of pesticide, herbicide, or antibiotic resistance to other organisms would not only put humans at risk, but it would also cause ecological imbalances, allowing previously innocuous plants to grow uncontrolled, thus promoting the spread of disease among both plants and animals. Source: www.nature.com