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Isolation and Transfection of Citrus Protoplasts with Citrus Exocortis Viroid. | LitMetric
Viroids are RNA-based infectious agents that are single-stranded, covalently closed circular, non-coding, and naked. Unlike RNA viruses, which at least encode proteins for replication, encapsidation, and movement, lack of protein-coding capacity of viroids makes them completely reliant on host for replication and movement. The high genetic diversity in viroids is believed to be due to the absence of proof-reading activity of the host RNA polymerases, the large population size, and the rapid rate of replication. Protoplasts are viable plant cells that are prepared by enzymatic removal of cell walls. Plant protoplasts provide a synchronous single-cell system for studying early events of viroid infection such as replication and genetic diversity at the cellular level. A simple and efficient method to isolate and transfect citrus protoplasts with transcript RNA of citrus exocortis viroid is described in this chapter.
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