Virus-Host Interactions

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Necrosis1.- Hypersensitive response (HR)- Usuallycontrolled by single dominant gene• Different response from bacterial and fungiinduced HR– Plant recognizes and respond to intracellulargene product– Mutations frequently change the phenotypefrom virulence to avirulence
Hypersensitive Response• Synthesis of new proteins- pathogenesisrelated• Increased production of cell wall phenolics• Release of active oxygen species• Production of phytoalexins• Accumulation of salicylic acid
Page 1 and 2: Virus-Host InteractionsM. Elena Gar
Page 3 and 4: History• 1882- Adolf Mayer:Transm
Page 5 and 6: Plant viruses• Two protein shell
Page 7 and 8: Virus Types• Helical- the NA is h
Page 9 and 10: Genome Types• dsDNA- Pararetrovir
Page 11 and 12: Plant Viruses- General• Approxima
Page 14 and 15: Transmission of Plant Viruses• Se
Page 16 and 17: • Viron enters cytoplasm passivel
Page 18: The replication cycle of Tobacco mo
Page 22 and 23: Morphological Symptoms• Symptoms
Page 24: ChlorosisPeanut mottle virus in bea
Page 27 and 28: Necrosis• Hypersensitive response
Page 29 and 30: Plant ResistanceResistance differen
Page 31 and 32: Plant-Virus InteractionsPlants poss
Page 33: Chlorosis• Symptoms associated wi
Page 37 and 38: Systemic AcquiredResistance (SAR)
Page 39 and 40: • Plant Immune Responses Against

Virus-Host Interactions

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