Abstract
Double-stranded RNA (dsRNA) is the replication intermediates of all RNA viruses. Purification and analysis of the profile and sequence of dsRNA is vital in virus diagnoses and/or characterization. Cellulose is one of the common materials used for isolation of dsRNA. Cellulose specifically binds dsRNA fraction under 15% ethanol concentration, which allows to isolate dsRNA from total nucleic acid solution or cell lysate. Here, we describe a rapid and reliable method for purifying dsRNA using a home-made micro-spin cellulose column from the cell lysate of virus-infected plant tissue. This labor-saving and rapid method enables routinely high-throughput isolation and analysis of dsRNA in plant or fungi samples.
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