''Polemovirus'' is a genus of

virus A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. Viruses infect all life forms, from animals and plants to microorganisms, including bacteria and archaea. Since Dmitri Ivanovsk ...

es. Commercial cultivars of ''

Euphorbia pulcherrima The poinsettia ( or ) (''Euphorbia pulcherrima'') is a commercially important flowering plant species of the diverse spurge family Euphorbiaceae. Indigenous to Mexico and Central America, the poinsettia was first described by Europeans in 1834 ...

'' serve as natural hosts. There is only one species in this genus: ''Poinsettia latent virus''. Its RNA suggests a replication mode like that of poleroviruses, whereas the coat protein sequence is closely related to that of sobemoviruses.

Structure

Viruses in ''Polemovirus'' are non-enveloped, with icosahedral geometries, and T=3 symmetry. Genomes are linear and non-segmented.

Life cycle

Viral replication is

cytoplasm In cell biology, the cytoplasm is all of the material within a eukaryotic cell, enclosed by the cell membrane, except for the cell nucleus. The material inside the nucleus and contained within the nuclear membrane is termed the nucleoplasm. ...

ic, and is

lysogenic Lysogeny, or the lysogenic cycle, is one of two cycles of viral reproduction (the lytic cycle being the other). Lysogeny is characterized by integration of the bacteriophage nucleic acid into the host bacterium's genome or formation of a circu ...

. Entry into the host cell is achieved by penetration into the host cell. Replication follows the positive stranded RNA virus replication model. Positive stranded RNA virus transcription is the method of transcription. The virus exits the host cell by tubule-guided viral movement. Commercial cultivars of ''Euphorbia pulcherrima'' serve as the natural host.

References

External links

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ICTV
{{Taxonbar, from=Q18907957, from2=Q7207891, from3=Q18822430 Positive-sense single-stranded RNA viruses Riboviria Virus genera