Waikavirus
Genus of viruses
From Wikipedia, the free encyclopedia
Waikavirus is a genus of viruses in the order Picornavirales, in the family Secoviridae. Plants, poaceae, cyperaceae, and gramineae serve as natural hosts. The genus contains 34 species, 33 of which are assigned to two subgenera with one unassigned to a subgenus. Diseases associated with this genus include: MCDV: plant stunting and chlorotic striping of tertiary leaf veins in maize.[1][2]
| Waikavirus | |
|---|---|
Virus classification  | |
| (unranked): | Virus |
| Realm: | Riboviria |
| Kingdom: | Orthornavirae |
| Phylum: | Pisuviricota |
| Class: | Pisoniviricetes |
| Order: | Picornavirales |
| Family: | Secoviridae |
| Genus: | Waikavirus |
Taxonomy
The genus contains the following species in the subgenus Actinidivirus:[2][3]
- Waikavirus actinidiae, Actinidia yellowing virus 1
- Waikavirus betacamelliae, Camellia virus B
- Waikavirus camelliae, Camellia virus A
- Waikavirus carotae, Carrot psyllid-borne associated virus
- Waikavirus celtis, Hackberry virus A
- Waikavirus diospyri, Persimmon waikavirus
- Waikavirus hirtae, Ficus hirta waikavirus
- Waikavirus juglandis, Juglans nigra waikavirus
- Waikavirus liegense, Poaceae Liege virus 1
- Waikavirus pittospori, Pittosporum tobira virus
- Waikavirus populi, Populus alba waikavirus
- Waikavirus querci, Quercus robur waikavirus
- Waikavirus rhododendri, Rhododendron delavayi secovirus
- Waikavirus trifoccidentale, Trifolium occidentale waikavirus
The genus contains the following species in the subgenus Ritunrivirus:[2][3]
- Waikavirus ajugae, Ajuga Reptans waikavirus
- Waikavirus anacycli, Anacyclus depressus waikavirus
- Waikavirus brassicae, Brassica napus RNA virus 1
- Waikavirus campanulae, Bellflower vein chlorosis virus
- Waikavirus eleocharis, Eleocharis dulcis waikavirus
- Waikavirus lactucae, Lettuce waikavirus 1
- Waikavirus ligustici, Ligusticum chuanxiong waikavirus
- Waikavirus mertensiae, Mertensia paniculata waikavirus
- Waikavirus oryzae, Rice tungro spherical virus
- Waikavirus pedicularis, Pedicularis rex waikavirus
- Waikavirus primulae, Primula vulgaris waikavirus
- Waikavirus ranunculi, Ranunculus cantoniensis waikavirus
- Waikavirus ribesnigri, Blackcurrant waikavirus A
- Waikavirus rosae, Sweetbriar rose curly top-associated virus
- Waikavirus thapsiae, Thapsia villosa waikavirus
- Waikavirus thymi, Thymus vulgaris waikavirus
- Waikavirus trifolii, Red clover-associated virus 1
- Waikavirus violae, Viola inconspicua waikavirus
- Waikavirus zeae, Maize chlorotic dwarf virus
Lastly, the species Waikavirus anthrisci (Anthriscus yellows virus) is unassigned to a subgenus.[2][3]
Structure
Viruses in Waikavirus are non-enveloped, with icosahedral geometries, and T=pseudo3 symmetry. The diameter is around 30 nm. Genomes are linear, around 12kb in length.[1]
| Genus | Structure | Symmetry | Capsid | Genomic arrangement | Genomic segmentation |
|---|---|---|---|---|---|
| Waikavirus | Icosahedral | Pseudo T=3 | 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. Plants, poaceae, cyperaceae, and gramineae serve as the natural host. The virus is transmitted via a vector (insects). Transmission routes are vector and mechanical.[1]
| Genus | Host details | Tissue tropism | Entry details | Release details | Replication site | Assembly site | Transmission |
|---|---|---|---|---|---|---|---|
| Waikavirus | Gramineae | Phloem; phloem parenchyma; bundle sheath | Viral movement | Viral movement | Cytoplasm | Cytoplasm | Mechanical innocuation: aphids; mechanical innocuation: leafhoppers |