Often
Asked Questions About Plant Biotechnology:
1. What is plant biotechnology?
· Plant bBiotechnology is a
process to produce a
genetically modifiedn improved plant by removing genetic information
from an organism, manipulating it in the laboratory and then the transferring it into a plant to change certain of its
characteristics. The source of the genetic information can be
any living organism of genes from one organism into another organism
to produce a specific trait in the improved plant.
2. Are the foods produced commercially from biotech plants safe?
· Yes. FYes. The foods from biotechnology are tested very rigorously and must meet
the same rigorous food standards as other foods. (In the U.S., biotech crops have had more testing
done than conventionally
produced any other crops.)
3. Who does the testing?
· The U.S.
Department of Agriculture is responsible for one aspect of the regulatory approval of the
plants produced through
biotechnology; they are responsible for movement of the plants and how field tests of the plants are
conductedthe specific plant application integrates into the
environment. The Environmental Protection Agency is
responsible for pesticide and environmental issues and some food safety issues. The Food and Drug Administration is
responsible for food safety. Other cCountries have
their own safety agencies and requirements.
Although the safety
testing is conducted for the most part by the company wishing to market the
food, these three federal agencies are responsible for reviewing the data. Because the products are produced and tested through standarduniversal
accepted scientific research methodology, some of the testing is validated by scientists
can peer reviewed,
the
work of each other third party research.
4. What are
some of the assessments are done?
·
Mechanism of action
test-a study to see what the protein added to the plant actually doesis intended to do.
·
Digestibility study-to
see how quickly the added protein is broken down inside the gut.
·
Bioinformatics screening on the protein-to screen
for similarities to known
allergens and toxins.
·
Acute oral toxicity
study-a toxicology study
in which the added protein is fed in its pure form to mice at an exposure rate
1000 times higher than humans would ever encounter.
·
Food Composition
study-measures the key nutritional components (protein, vitamins, oils, starch,
and fiber) and compares that composition it to othercomparable varieties to
see there is no change in
key ingredients (substantial equivalence).to wholesomeness.
·
Non-target animal
studies of pesticidal proteins-determine if the protein and/or the plant has
any toxic effects on desirable insects and/or animals in the ecosystem.
5. Why do we need Pplant Bbiotechnology? Don’t we already produce more food than we can
market?
· Food
production is not secure everywhere in the world-especially as we look at
future population growth. Not all
familiar foods are nutritionally adequate. We can increase the nutritional quality, make
plants drought tolerant, or make plants capable of growing in high salt
soil. We can also produce plants
that can protect themselves from insects or disease with less environmental impact. We can increase the nutritional quality, make
plants drought tolerant, make plants capable of growing in high salt soil. Many of the desired
modifications for flavor, color, shipping and storage quality can be enhanced
through plant biotechnology. Farmers
gain from decreased cost of production, use of less pesticides and/or more environmentally
friendly pesticides.
6. Will pests develop resistance to the biotech crop
innovations?
· This is one
of the issues on which that both
the Departments of Agriculture and Environmental Protection Agency require
scientific research before commercialization can proceed. These agencies establish Different cultural
practices that are
designed to slow have been developed to help prevent such an eventthe development of
resistance. These include the concept
of a-such as “refuge” areas in biotech fields, which are planted with insect-susceptible crops.to biotech
insect resistant crops. The
Refuge area provides a field area of traditional crop planted next to the
biotech crop. Some insects
will feed in the traditional crop area, serving as a source of susceptible genetic insect
mates and slowing the
development of resistant pests.
Each biotech application is approved on a case by case basis so that specific precautions
can be designed to mitigate the development of problems.to avoid harm.
7. Will cross-pollination make for resistant weeds (superweeds) or destroy
food sources for of other beneficial
insects.
· Each plant
biotech application is researched for this issue. Of course for natural pollination to occur, the same plant family
would have to be in the vicinity of the biotech crop being grown. The life cycle of the two plants would have
to coincide for pollination to take place.
If cross-pollination did occur, will the pollination result in
harm? It depends on the nature of the gene. In the case of an organic farmer, it might
result in problems since they do not allow genes introduced by biotechnology to
be in their crops. If the gene is
responsible for herbicide tolerance, it could result in a closely related variety becoming herbicide
tolerant. If this variety is a weed, it
could mean that the grower has to change weed control strategies. But farmers have had to deal with these types of issues Pesticide
resistance happens with traditional plants, and pests
and spray drift and have developed methods to mitigate their effects.so farmers
have experience in this issue.
8. Is biotech corn harmful to the Monarch butterfly?
· Corn pollen
is not a food for the Monarch bButterflyy itself, rather for the larval stage of the
butterfly. The larvae could ingest the pollen when eating
leaves from the milkweed plant that grows in or near corn fields. This was only an issue for pollen shed from corn
plants modified to contain the insecticidal Bt gene. But
often the pollen is not shed at the same
time as larval feeding, the pollen density is not high enough to cause effects
or the particular corn variety does make much Bt in its pollen. -it is
difficult for the butterfly to accidentally ingest enough pollen to be harmful
while it is feeding on the milkweed plant.
It is not likely that pollination would happen during the flight time of
the butterfly, or that many milk weed plants would be found in cornfields or
that the pollen will rest on the surface of the milkweed plant leaf before wind
and rain would remove it. In the original test that
demonstrated a problem, larvae were force to eat the pollen by being enclosed
in a Petri dish with only one diet choice.
A fFollow-up studiesy conducted at several Mid-western Universities
concluded that the Monarch is in greater danger from traditional insecticides
used in crop production than it is from biotech corn pollen.
9. Is a “Terminator Gene” being used to prevent farmers from
re-planting their harvested seeds?
· No. At this time there is no such gene being
used in the biotech commercial crops.
Someday it may be desirable to incorporate such sterile seed technology
to give added assurance that cross-pollination is not going to occur. However, several factors stopped the development of
the so-called “terminator gene”, including Cconcern over farmers in
developing nations not
being able to replant their seed and having to purchase seed from companies
each year.in their ability to afford the new technology
stopped the development of the “terminator” gene.
10. Why are farmers required to sign an agreement
not to replant harvested seed for the next season’s crop?
· The
companies producing the seed are protecting their development costs and
intellectual property. This is not the first time that
such a restriction impinged farmers’ ability to replant seed. To achieve optimal yields, fFarmers
have to purchased fresh corn
seed since the development of hybrid corn each year. Many soybean farmers also purchase fresh
seed each year as a
matter of good agronomic practice and economics of production. In these cases and in the case of biotech crops, Ffarmers will only purchase the seed as
long as it offers a benefit greater that the cost.
11. Will biotech cross-pollination be a problem
for my certification as “organic produce”?
· If there is
to be value added due to a particular certification program, it will be
necessary for the grower of the value added product to insure certification
requirements. In the case of the label “organic”, it is now a
federal mandate that it cannot contain genes from biotech crops. Therefore, to avoid this, Ssome crops will require
barrier rows, or planting date differences between different crops. Handling, transport, storage and processing
will need to be kept separate-an additional cost.
12. Are Organic foods better? Is Organic farming better? Why not grow only
Organic?
· Organic is an
alternative method of food
production. Published Sscientific research willdoes not support that
organic food is safer, more nutritious or even has more flavor, although there have been
claims to this effect. The
selection of the variety, proper growing practices, and harvest time may be
contributing to some of the testimonials.
Home gardening is usually not about economics of production, thus
growing organic or “almost organic” gives a family many benefits such as
exercise, assurance of growing their food as they like it, and something the
family can do together. Many people buy organic believing they will be less
exposed to pesticides
since certain pesticides cannot be used in organic production. One of the issues for many is that commercial organic production is not as efficient as other types of
food production, thereby potentially requiring more land to produce the same
amount of food.
13. Will biotech food
increase my risk of food allergies?
· Food safety
is important. The FDA requires tests to
determine if any known allergens (proteins) are introduced into biotech foods. present in biotech food. If such a protein were present or if the source of the gene
were from a known allergenic source, like peanut or wheat, federal regulation dictate that
this must be stated on theit would have to be included on a
label. However, strict assurances of
nonallergenicity with biotech foods, as well as with conventional foods, isstrict assurances of
nonallergenicity with biotech foods, as well as with conventional foods, are difficult. For example, many naturally occurring foods contain components
that cause human allergies. The kiwi
fruit was introduced into the U.S. decades ago with no known allergies
associated with its consumption. Today
there are individuals who are allergic to kiwi fruits and some of them have
cross-allergies to latex.
To date, no
known allergen proteins have been used in any commercial foods.
14. What about StarLink Corn-wasn’t it
recalled in some taco shell products?
· A European
company received EPA and FDA
permission to market their seed corn for livestock feed but not for human consumption. The FDA required further testing before it
would give approval to market the corn for use as human food because of the
slow digestion rate of the protein in that variety of biotech corn. Slow digestibility is one hallmark of an allergen,
but some nonallergenic foods are also digested slowly. Before the testing could be done, Ssome of the corn got into
the food supply channels and into some taco shells. Since it had not been approved for human food-it was recalled., Follow-up blood tests by the Center for
Disease Control determined there was low probability that it would be allergenic and no evidence of Starlink was found in any of
the food that a few
consumers claimed made them sick.the corn was an allergen. Because of this problemSince then, FDA has stated thjatthat it will not approve crops for
animal consumption only.
requires that all crops that are approved must be
approved for human food use before they can be commercialized. American biotech companies had always
followed this practice.
15. Should biotech foods be labeled?
· Currant law
requires a label if the food is substantially changed in nutritional content,
digestibility, or is allergenic. A
person’s right to know is very important.
However, the goal is to convey the necessary information on nutrient
content and safety without causing unwarranted concern or fear. How something is produced is interesting to
some people- but to many the main concern is basic safety. Certified Organic food is not biotech
derived from biotech crops. It offers
an alternative. Expense in labeling is
also a consideration along with how to word the label and be fair.
16. Why is Europe reluctant to accept
biotechnology? Some people in the U.S.
are also anti-biotech, why is this?
· In the late 1990’s Europe
experienced several food safety scares relating to mad cow disease and dioxin
contamination. The manner in which
governments in Europe responded to these issues did not instill confidence of
consumers that the governments could assure food safety. Therefore they were nervous that the governments could not really
assure safety of the new
biotech foods. Of course, Aacceptance of any new technology is about Rrisk vs. bBenefit. If a person believes there is greater risk
than he/she will get in benefit, then it is difficult to accept change. Others are against the “industrialization of
agriculturale
production” and see small, independent farms as the ideal way of farming. There is growing concern that some countries
are using the issue of safety as a trade/tariff barrier-rather than a real
concern over safety. Others want a
greater, more
comprehensive method of safety testing than we use today.
17. What crops have been produced through
biotechnology?
· Crops produced commercially today in the U.S. that were developed through biotechnology
include canola,
corn, cotton, soybeans and papaya.
Some other crops, like squash, potato and tomato, are no longer being
grown commercially. Many other crops
have been field-tested
but not grown for commericalcommercial production. The list of these crops can be found at http://www.nbiap.vt.edu/cfdocs/fieldtests1.cfm
The leading
crops in the U.S. include; Corn, Soybeans, Cotton, Canola, and Papaya. Sugar
Beets, Sweet Potato, Potato, Squash, Tomato, Chicory, Carnation, Bananas, and
Cassava are a few other crops that have been grown around the world. The horticulture industry is researching
flowers, trees, and grass.
18. Are genes from a fish actually
moved into vegetables?
· To date, only genes from
bacteria or other plants have been moved into commercially available crops. Genes
are composed of the same chemical composition regardless of where they are
found. It is possible to move genes from any species into another species. To date, only genes from bacteria or other plants have been
moved into commercially available crops. plants. One report of a
fish gene from an arctic flounder being moved into a tomato was reported in the
scientific literature, but this was never commercialized. The idea behind the experiment was to see
whether the mechanism that allows the flounder to survive cold temperatures could be
transferred to a vegetable.
196.
Who has spoken out on biotech acceptance?
·
United States Department of Agriculture
·
Food and Drug Administration
·
Environmental Protection Agency
·
APHIS
·
Health and Welfare of
Canada
·
Japan MHW
·
World Health
Organization
·
European Scientific
Committee for Food
·
International Food
Information Council
·
American Dietetic
Association
·
Food and Agriculture
Organization of thee
United Nations
·
Biotechnology Industry
Organization