Avocado sunblotch viroid
from class: Microbiology Definition Avocado sunblotch viroid (ASBVd) is a pathogenic RNA molecule that infects avocado trees, causing significant crop damage. It is one of the smallest known pathogens and does not encode any proteins.
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Predict what's on your test 5 Must Know Facts For Your Next Test ASBVd has a single-stranded, circular RNA genome. It causes symptoms such as leaf chlorosis, fruit deformation, and reduced yield in avocado trees. Transmission occurs through infected plant material, mechanical means, and possibly seeds. Unlike viruses, ASBVd does not have a protein coat or capsid. Control measures include using certified disease-free planting material and strict sanitation protocols. Review Questions What type of genetic material composes the Avocado sunblotch viroid? How does Avocado sunblotch viroid differ from typical viruses in terms of structure? What are some common symptoms caused by Avocado sunblotch viroid in avocado trees?
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