Uploaded on Jan 13, 2022
PPT on Future of GMOs in Agriculture.
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
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