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Lernmaterialien für Applied Virology an der Universität für Bodenkultur Wien

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What name can the virus particle be given based on its molecular composition? A protein? A Nucleic acid?

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It is a nucleoprotein.

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What can Plant viruses can be transmitted by?

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  • Insects
  • Plant sap
  • Nematodes
  • Fungi
  • Injury
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How is the true and apparent plant pathogen resistance different?

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True: through R-gene, not dep. on environment

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What means "+" when describing an RNA virus?

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the "+" refers to the direction of the genome, where + refers to the readable, mRNA format. - would correspond to an unreadable antisense format

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What is the most important route of plant virus transmission?

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Insect transmission

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What was one of the first methods to get rid of a plant virus -> get a virus free plant?

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By meristem culture.

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Which parts of a virus are critical end can be sufficient for infection?

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Only the genome!

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How does the TMV move through the infected plant?

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  • Cell-to-cell
    • Though plasmodesmata
    • Multiplies in parenchyma
  • Long distance movement
    • Through ploem, then re-enters the parenchyma cells
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With insects that are able to transmitt persistent transmission or circulative transmission, where does the virus stay?

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It enters the salivary glands and is transmitted via the saliva.

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What are 4 of the tools that are used in a regulatory manner to control plant virus diseases?

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  • Quarantines and inspections
  • Crop certifications
  • Avoidance of pathogen or evasion
  • Use of pathogen-free propagation material
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What means "stylet borne", when it comes to plant viruses? Why is this form of transmission "non-persistent"?

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It means, that the virus is carried over by the stylets, the chewing tools of the insect. Because this contamination is very superficial and the virus does not use the insect as a host, the contamination is rather transient and is not "persistent"

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What makes a virus "well adapted"?

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That it deos not show any symptoms.

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  • 39453 Karteikarten
  • 1110 Studierende
  • 19 Lernmaterialien

Beispielhafte Karteikarten für deinen Applied Virology Kurs an der Universität für Bodenkultur Wien - von Kommilitonen auf StudySmarter erstellt!

Q:

What name can the virus particle be given based on its molecular composition? A protein? A Nucleic acid?

A:

It is a nucleoprotein.

Q:

What can Plant viruses can be transmitted by?

A:
  • Insects
  • Plant sap
  • Nematodes
  • Fungi
  • Injury
Q:

How is the true and apparent plant pathogen resistance different?

A:

True: through R-gene, not dep. on environment

Q:

What means "+" when describing an RNA virus?

A:

the "+" refers to the direction of the genome, where + refers to the readable, mRNA format. - would correspond to an unreadable antisense format

Q:

What is the most important route of plant virus transmission?

A:

Insect transmission

Mehr Karteikarten anzeigen
Q:

What was one of the first methods to get rid of a plant virus -> get a virus free plant?

A:

By meristem culture.

Q:

Which parts of a virus are critical end can be sufficient for infection?

A:

Only the genome!

Q:

How does the TMV move through the infected plant?

A:
  • Cell-to-cell
    • Though plasmodesmata
    • Multiplies in parenchyma
  • Long distance movement
    • Through ploem, then re-enters the parenchyma cells
Q:

With insects that are able to transmitt persistent transmission or circulative transmission, where does the virus stay?

A:

It enters the salivary glands and is transmitted via the saliva.

Q:

What are 4 of the tools that are used in a regulatory manner to control plant virus diseases?

A:
  • Quarantines and inspections
  • Crop certifications
  • Avoidance of pathogen or evasion
  • Use of pathogen-free propagation material
Q:

What means "stylet borne", when it comes to plant viruses? Why is this form of transmission "non-persistent"?

A:

It means, that the virus is carried over by the stylets, the chewing tools of the insect. Because this contamination is very superficial and the virus does not use the insect as a host, the contamination is rather transient and is not "persistent"

Q:

What makes a virus "well adapted"?

A:

That it deos not show any symptoms.

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