Plant responses to infection (1 Viewer)

zizi2003_

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What's a solid example for a plant's response to infection? (fungal or viral?)
Like with Tobacco Mosaic Virus for instance, how does the tobacco plant really respond to the virus (its defences)?
 

okayokay123

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These are mymod 7 examples

For fungal pathogens:
waratah - dieback caused by phytophthora cinnamoni
symptoms: yellow leaves, wilting, blackening of stem and roots
  • secretes antifungal enzymes making an inhospitable environment for the fungus
  • Causes cell death of infected leaves or stems
  • strengthening of cell wall to prevent further penetration of fungi

For viral pathogens:
banana - banana bunchy top virus spread by vector transmission from aphids
symptoms: stunted leaf growth, reduced fruit production
  • technique called RNA silencing - the plant recognises the viruses genetic material and copies it so that other cells can respond to it and prevent replication
 

zizi2003_

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These are mymod 7 examples

For fungal pathogens:
waratah - dieback caused by phytophthora cinnamoni
symptoms: yellow leaves, wilting, blackening of stem and roots
  • secretes antifungal enzymes making an inhospitable environment for the fungus
  • Causes cell death of infected leaves or stems
  • strengthening of cell wall to prevent further penetration of fungi

For viral pathogens:
banana - banana bunchy top virus spread by vector transmission from aphids
symptoms: stunted leaf growth, reduced fruit production
  • technique called RNA silencing - the plant recognises the viruses genetic material and copies it so that other cells can respond to it and prevent replication
Thank you!
 

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