Poacevirus

Poacevirus is a genus of viruses, in the family Potyviridae. Poaceae plants serve as natural hosts. There are three species in this genus.^[1][2]

Poacevirus
Virus classification
(unranked):	Virus
Realm:	Riboviria
Kingdom:	Orthornavirae
Phylum:	Pisuviricota
Class:	Stelpaviricetes
Order:	Patatavirales
Family:	Potyviridae
Genus:	Poacevirus

Taxonomy

The genus contains the following species, listed by scientific name and followed by the exemplar virus of the species:^[2][3]

• Poacevirus caladeniae, Caladenia virus A
• Poacevirus sacchari, Sugarcane streak mosaic virus
• Poacevirus tritici, Triticum mosaic virus

Structure

Viruses in Poacevirus are non-enveloped, with flexuous and filamentous geometries. The diameter is around 12-15 nm, with a length of 680-750 nm. Genomes are linear and non-segmented, around 9.7-10.3kb in length.^[1]

Genus	Structure	Symmetry	Capsid	Genomic arrangement	Genomic segmentation
Poacevirus	Filamentous		Non-enveloped	Linear	Monopartite

Life cycle

Viral replication is cytoplasmic. 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. Poaceae plants serve as the natural host. The virus is transmitted via a vector (wheat curl mite). Transmission routes are vector.^[1]

Genus	Host details	Tissue tropism	Entry details	Release details	Replication site	Assembly site	Transmission
Poacevirus	Plants	None	Viral movement; mechanical inoculation	Viral movement	Cytoplasm	Cytoplasm	Mechanical inoculation: wheat curl mite