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biotechnology

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Biotechnology... Narrow sense definition ... Public resistance to biotechnology has largely ended in this country-- not so in Europe! ... – PowerPoint PPT presentation

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Title: biotechnology


1
biotechnology
new tool for progress or threat to our
environment?
R. Daniel Lineberger Professor of
Horticulture Texas AM University
2
biotechnology
the development of products and processes using
living organisms
3
Biotechnology...
  • Narrow sense definition
  • use of recombinant DNA methods to alter
    living organisms
  • Broad sense definition
  • use of all tools of modern biology to improve
    products and processes
  • (including tissue culture, embryo transfer,
    monoclonal antibodies, etc.)

4
Test your knowledge...
  • Which of the following is (are) TRUE?
  • A. We are eating genetically engineered food.
  • B. We can be eating genetically engineered food
    without knowing it.
  • C. Humans have been genetically engineered.
  • D. Biotech companies are making lots of money!

5
Test your knowledge...
  • Which of the following is (are) TRUE?
  • A. We are eating genetically engineered food.
  • B. We can be eating genetically engineered food
    without knowing it.
  • C. Humans have been genetically engineered.
  • D. Biotech companies are making lots of money!

6
Whats been done...
  • Animal biotechnology
  • cloning and transplanting embryos
  • elevated hormone production
  • altered chemical composition of milk
  • altered fat production

7
Hello...Dolly,...Dolly??!
8
Whats been done...
  • Plant biotechnology
  • autogeneous BT production
  • herbicide resistance
  • altered ethylene synthesis
  • altered flower color
  • virus resistance

9
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10
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11
Biotech in the field...
  • Herbicide tolerant
  • bromoxynil cotton
  • glufonisate beet, canola, corn, soybean
  • glyphosate beets, corn, cotton, soybeans
  • sulfonyl urea cotton, flax
  • Insect protected (Bt) corn, cotton, potato,
    tomato
  • Virus protected papaya, potato, squash
  • Male sterile canola, corn, radicchio
  • Ripening modified tomato

12
Petitions to APHIS for release of GMOin last 10
years
Beets Canola Corn Cotton Soybean Potato Squash Tom
ato Others
2
3
14
5
5
5
2
12
5
Source APHIS, http//www.aphis.usda.gov/biotech/
petday.html
13
Varieties in production...
  • slower ripening/softening tomatoes
  • FlavrSavr, SummerFresh
  • virus resistant squash
  • Freedom II squash
  • BT producing plants
  • Sweetcorn, NewLeaf potato, BollGARD cotton
  • altered flower color

14
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15
What are the issues?
  • Its fundamentally wrong!
  • Well lose the effectiveness of all our
    pesticides as resistant populations develop.
  • Genetic resources of underdeveloped nations are
    being unfairly exploited.
  • Corporate biotech firms will dominate.

16
Debating the issues...
  • Public resistance to biotechnology has largely
    ended in this country--
  • not so in Europe!

grown increasingly hostile
17
Outlook for the future...
  • Plant scientists must use every tool at
    their disposal to improve plant and animal
    production systems to meet the needs of a rapidly
    growing population for ample and healthful food.
    And they must inform the public of the safety and
    necessity for their choice of tools.

18
Looming on the horizon...
  • Genetic pollution???
  • escape of herbicide resistance
  • Development of tolerance to Bt toxin
  • effects on non-target organisms
  • Pleiotrophic effects
  • Vegetables as minor use crops
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