BNTY 301

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Author:
Anonymous
ID:
207709
Filename:
BNTY 301
Updated:
2013-03-16 22:46:51
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Week nine notes
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Description:
Lecture notes for week nine
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  1. Discovered by
    • Ivanowsky: 1890 filterablity, he thought it was a toxin
    • Beijerinck: 1897 multiplied contaigon vivum, fulidum
    • Mayer: 1893 transmission
  2. Virus Characterisitcs
    • Small
    • obligate parasites: need host for protein synthesis
    • contains RNA, DNA
  3. Tobacco Mosaic virus
    • First viruses isolated
    • RNA
    • First to be sequenced
  4. Tobamovirus
    • tobacco mosaic virus
    • one RNA in stiff rod0shaped particle
    • not transmitted by insects
    • generally mechanically transmitted
  5. Hordeivirus
    • Barley Stripe Mosaic Virus
    • 3 RNA in separate stiff rod-shaped particles
    • not transmitted by insects
    • transmitted through seed
  6. Potyvirus
    • Potato Virus Y
    • Genome: one RNA in a long flexuous particle
    • Transmitted by aphids and vegatative propagation
  7. Luteovirus
    • Barely yellow dwarf virus
    • One RNA in spherical particle
    • Transmitted by aphids
    • not mechanically
  8. Cucumovirus
    • Cucumber mosaic virus
    • 3 RNAs in 3 spherical particles
    • transmitted by aphid
  9. Nepovirus
    • Tobacco Ringspot Virus
    • 2 RNAs in two Sperical particles
    • Transmitted through neatodes and seed
  10. Ilarvirus
    • Prunus Necrotic Ringspot Virus
    • 3 RNA in three spherical particles
    • Transmitted through polen and seed
  11. Tospovirus
    • Tomato spotted wilt virus
    • 3 RNA in a single spherical particles surrounded by a membrane
    • Transmitted by thrips and multiples in thrips
  12. Begomovirus
    • Bean Golden Mosaic Virus
    • 2 DNA in spherical twin particles
    • transmitted by whiteflies

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