''Picovirinae'' is a subfamily of
viruses
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 ...
in the order ''
Caudovirales
''Caudovirales'' is an order of viruses known as the tailed bacteriophages (''cauda'' is Latin for "tail"). Under the Baltimore classification scheme, the ''Caudovirales'' are group I viruses as they have double stranded DNA (dsDNA) genomes, ...
'', in the family ''
Salasmaviridae''. Bacteria serve as natural hosts. There are two genera and seven species in this subfamily.
Taxonomy
The following genera and species are recognized:
*''
Beecentumtrevirus''
**''
Bacillus phage Nf''
**''
Bacillus virus B103
''Bacillus'' (Latin "stick") is a genus of Gram-positive, rod-shaped bacteria, a member of the phylum ''Bacillota'', with 266 named species. The term is also used to describe the shape (rod) of other so-shaped bacteria; and the plural ''Bacilli ...
''
**''
Bacillus virus Goe1''
*''
Salasvirus''
**''
Bacillus virus Goe6
''Bacillus'' (Latin "stick") is a genus of Gram-positive, rod-shaped bacteria, a member of the phylum ''Bacillota'', with 266 named species. The term is also used to describe the shape (rod) of other so-shaped bacteria; and the plural ''Bacilli ...
''
**''
Bacillus virus Gxv1
''Bacillus'' (Latin "stick") is a genus of Gram-positive, rod-shaped bacteria, a member of the phylum ''Bacillota'', with 266 named species. The term is also used to describe the shape (rod) of other so-shaped bacteria; and the plural ''Bacilli ...
''
**''
Bacillus virus phi29
''Bacillus virus Φ29'' (bacteriophage Φ29) is a double-stranded DNA (dsDNA) bacteriophage with a prolate icosahedral head and a short tail that belongs to the genus ''Salasvirus'', order ''Caudovirales'', and family ''Salasmaviridae''. They a ...
''
**''
Bacillus virus PZA''
Structure
Viruses in ''Picovirinae'' are non-enveloped, with icosahedral or prolate heads of about 50–55 nm in diameter, and short tails. Genomes are linear, double stranded DNA, and are relatively small (between 16–20 kbp)-hence the term pico-virinae. Picoviruses package linear, monomeric genomes with a terminal protein covalently attached to each end.
[
]
Life cycle
Viral replication is cytoplasmic. Entry into the host cell is achieved by adsorption into the host cell. Replication follows the DNA strand displacement model. DNA-templated transcription is the method of transcription. Bacteria serve as the natural host. Transmission routes are passive diffusion.[
]
References
External links
Viralzone: Picovirinae
ICTV
{{Taxonbar, from=Q7191071
Virus subfamilies