Avsunviroidae

VIRION

None reported. Viroids do not encode for proteins.

GENOME

Circular, ssRNA genome of 246-375 bases. Most of the genome displays complementary strands. Replication occurs by symmetric rolling circle. This family is distinguished by the ability to self-cleave through hammerhead structures.

REPLICATION

CHLOROPLAST

  1. Viroid infects cell presumably through cell-to-cell transport and/or injection by insects.
  2. The viroid genomic RNA is transported to the chloroplast.
  3. Symmetric rolling circle replication
  4. New genomes exit the cell presumably using cell-to-cell transport and/or feeding by insects.