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15 Cards in this Set
- Front
- Back
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Viroid |
Non living infectious agent responsible for some plant disease |
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Have ___nucleotides long |
250-370 |
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Discovered by__in___on____ |
Theodor diener in 1971 potato swindle tuber disease |
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Viroid means |
Virus like |
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Structure of viroid |
No capsid Single stranded non codimg rna Five domains very small |
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Vegetative propagation of plants agricultural or horticultural practices in whic contaminated instruments are used |
Transmission |
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Tranmission can be done through |
Seeds or pollen |
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Transmission can be transmitted by an |
Aphid |
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Replication of viroid |
Rolling circle mechanism |
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Viroid rna |
Plus strand |
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They replicate inside the |
Nucleus or chloroplast |
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Replicate in the nucleus |
Pospiviroidae |
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Replicate in the chloroplast |
Avsunviroidae |
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Popsiviroidae pathway |
Asymmetric |
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Avsunviroidae pathway |
Symmetric |
