What type of genome does the Barley yellow dwarf virus (BYDV), shown above, poss

Question

What type of genome does the Barley yellow dwarf virus (BYDV), shown above, possess (+ or -, RNA or DNA, ss or ds, retro or not retro)? The first ORF (open reading frame) in the BYDV genome (shown in blue) encodes a polyprotein. Describe the molecular events that lead the expression of helicase, protease and vpg starting at when the genome contacts the cytoplasm of a host cell. How does BYDV spread from cell-to-cell in an infected plant? What viral proteins facilitate this spread and how do they do so? How does BYDV spread from plant-to-plant? What proteins facilitate this spread and how do they do so?

Explanation / Answer

Barley yellow dwarf is a plant disease caused by the barley yellow dwarf virus, and is the most widely distributed viral disease of cereals. It affects the economically important crop species barley, oats, wheat, maize.The virus is transmitted by aphids, and the taxonomy of the virus is based on genomeorganisation, serotype.

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