Virusoid genomes consist of a very small single-stranded RNA molecule, typically ranging from 220 to 388 nucleotides in length. These genomes do not encode any proteins; instead, their primary function is to serve as a template for virusoid RNA replication.

Google

Virusoids are pathogenic, subviral particles composed of single-stranded RNA (ssRNA) that infect commercially important agricultural crops. Unlike viroids, virusoids are non-self-replicating and require the host cell to be co-infected with a specific helper virus to undergo replication.

Virusoids

https://openstax.org/details/books/microbiology/

Microbiology covers the scope and sequence requirements for a single-semester microbiology course for non-majors. The book presents the core concepts of microbiology with a focus on applications for careers in allied health. The pedagogical features of the text make the material interesting and accessible while maintaining the career-application focus and scientific rigor inherent in the subject matter. Microbiology’s art program enhances students’ understanding of concepts through clear and effective illustrations, diagrams, and photographs.

Microbiology is produced through a collaborative publishing agreement between OpenStax and the American Society for Microbiology Press. The book aligns with the curriculum guidelines of the American Society for Microbiology.

OpenStax Microbiology Textbook

To replicate, a virusoid depends on a helper virus, which is typically a member of the Sobemovirus family, such as the subterranean clover mottle virus. The virusoid is packaged inside the helper virus's capsid and is released into the host cell's cytoplasm upon entry. In the cytoplasm, the virusoid exhibits ribozyme activity to facilitate its replication, while the helper virus replicates independently of the virusoid.

Learn Before

Related