Plant Parasitic Nematodes and Secondary Pathogens

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How do plant parasitic nematodes contribute to the establishment of secondary pathogens?

They alter the host's tissue to make it suitable for colonization by secondary pathogens (correct)

They compete with secondary pathogens for resources

They physically attack the secondary pathogens

They produce chemicals that inhibit the growth of secondary pathogens

What role do nematodes play in breaking disease resistance in resistant cultivars of crop plants?

They alter the host's tissue to facilitate the entry of microorganisms (correct)

They directly attack the resistant cultivars

They induce a chemical defense in the crop plants

They weaken the disease resistance in the crop plants

What was observed by Atkinson in 1892 regarding nematode-fungus interaction?

Nematodes and fungi have no interaction

Nematodes assist in controlling the spread of fungus

Nematodes and fungi compete for resources in soil

Fusarium wilt was more severe in the presence of Meloidogyne spp. (correct)

In the nematode-fungus interaction, what role does the nematode play in assisting the fungus?

It alters the host's tissue to aid in fungal colonization Signup and view all the answers

What is the role of nematodes in the nematode-virus complex?

They serve as a vector for the virus Signup and view all the answers

What is the mechanism of virus retention in Longidorus?

Retention of virus mechanically Signup and view all the answers

How do nematodes transmit ring spot viruses?

Through polyhedral shaped particles Signup and view all the answers

How long can the grapevine fan leaf virus persist in X.index?

60 days Signup and view all the answers

Which nematode transmits the grapevine fan leaf virus?

Xiphinema index Signup and view all the answers

Where are the virus particles released into the plant cell in Xiphinema?

Through the cuticle lining of the lumen of oesophagus Signup and view all the answers

Plant Parasitic Nematodes and Secondary Pathogens

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Questions and Answers

How do plant parasitic nematodes contribute to the establishment of secondary pathogens?

What role do nematodes play in breaking disease resistance in resistant cultivars of crop plants?

What was observed by Atkinson in 1892 regarding nematode-fungus interaction?

In the nematode-fungus interaction, what role does the nematode play in assisting the fungus?

What is the role of nematodes in the nematode-virus complex?

What is the mechanism of virus retention in Longidorus?

How do nematodes transmit ring spot viruses?

How long can the grapevine fan leaf virus persist in X.index?

Which nematode transmits the grapevine fan leaf virus?

Where are the virus particles released into the plant cell in Xiphinema?

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