''Lolavirus'' 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 Ivanovsky's 1 ...

es in the order ''

Tymovirales ''Tymovirales'' is an order of viruses with five families. The group consists of viruses which have positive-sense, single-stranded RNA genomes. Their genetic material is protected by a special coat protein. Description Tymoviruses are mainly ...

'', in the family ''

Alphaflexiviridae ''Alphaflexiviridae'' is a family of viruses in the order ''Tymovirales''. Plants and fungi serve as natural hosts. There are 65 species in this family, assigned to six genera. Diseases associated with this family include: mosaic and ringspot sy ...

''. Plants, specifically

ryegrass ''Lolium'' is a genus of tufted grasses in the bluegrass subfamily (Pooideae). It is often called ryegrass, but this term is sometimes used to refer to grasses in other genera. They are characterized by bunch-like growth habits. ''Lolium'' is ...

, serve as natural hosts. There is only one species in this genus: '' Lolium latent virus''.

Structure

Viruses in ''Lolavirus'' are non-enveloped, with flexuous and filamentous geometries. The diameter is around 13 nm, with a length of 640 nm. Genomes are linear, around 7.6kb in length, with five

open reading frame In molecular biology, open reading frames (ORFs) are defined as spans of DNA sequence between the start and stop codons. Usually, this is considered within a studied region of a prokaryotic DNA sequence, where only one of the six possible readin ...

s that encode the replication-associated protein, the movement-associated triple gene block proteins, and the coat protein (which is cleaved into two parts weighing about 28 and 33 kDa). The genome codes for 6 proteins.

Life cycle

Viral replication is cytoplasmic, and is lysogenic. 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 tripartite non-tubule guided viral movement. Plants serve as the natural host.

References

External links

Viralzone: Lolavirus

ICTV
{{Taxonbar, from=Q15832678 Alphaflexiviridae Virus genera