“Betaflexiviridae”的意思、由来-开放百科全书

词条

Betaflexiviridae

释义

Taxonomy
Structure
Life cycle
References
External links

{{Italic title}}{{Use dmy dates|date=April 2017}}{{Virusbox
| name = Betaflexiviridae
| taxon = Betaflexiviridae
| subdivision_ranks = Genera
| subdivision =

Capillovirus
Carlavirus
Citrivirus
Divavirus
Foveavirus
Trichovirus
Tepovirus
Vitivirus

}}Betaflexiviridae is a family of viruses in the order Tymovirales. Plants and fungi serve as natural hosts. There are currently 87 species in this family, divided among 7 genera. Diseases associated with this family include: mosaic and ringspot symptoms.^[1]^[2]

Taxonomy

Group: ssRNA(+){{Collapsible list|title= Order: Tymovirales
|1={{Collapsible list| framestyle=border:none; padding:1.0em;|title=Family: Betaflexiviridae
|1={{hidden begin|title=Genus: Capillovirus}}

Apple stem grooving virus
Cherry virus A

{{hidden end}}
|2={{hidden begin|title=Genus: Carlavirus}}

Aconitum latent virus
American hop latent virus
Blueberry scorch virus
Butterbur mosaic virus
Cactus virus 2
Caper latent virus
Carnation latent virus
Chrysanthemum virus B
Cole latent virus
Coleus vein necrosis virus
Cowpea mild mottle virus
Cucumber vein-clearing virus
Dandelion latent virus
Daphne virus S
Elderberry symptomless virus
Garlic common latent virus
Helenium virus S
Helleborus mosaic virus
Helleborus net necrosis virus
Hippeastrum latent virus
Honeysuckle latent virus
Hop latent virus
Hop mosaic virus
Hydrangea chlorotic mottle virus
Hydrangea latent virus
Kalancho‰ latent virus
Ligustrum necrotic ringspot virus
Lilac mottle virus
Lily symptomless virus
Melon yellowing-associated virus
Mirabilis jalapa mottle virus
Mulberry latent virus
Muskmelon vein necrosis virus
Narcissus common latent virus
Nerine latent virus
Passiflora latent virus
Pea streak virus
Phlox virus B
Phlox virus M
Phlox virus S
Poplar mosaic virus
Potato latent virus
Potato virus M
Potato virus P
Potato virus S
Red clover vein mosaic virus
Shallot latent virus
Sint-Jan's onion latent virus
Strawberry pseudo mild yellow edge virus
Sweet potato C6 virus
Sweet potato chlorotic fleck virus
Verbena latent virus

{{hidden end}}
|3={{hidden begin|title=Genus: Citrivirus}}

Citrus leaf blotch virus

{{hidden end}}
|4={{hidden begin|title=Genus: Foveavirus}}

Apple stem pitting virus
Apricot latent virus
Asian prunus virus 1
Grapevine rupestris stem pitting-associated virus
Peach chlorotic mottle virus
Rubus canadensis virus 1

{{hidden end}}
|5={{hidden begin|title=Genus: Tepovirus}}

Potato virus T

{{hidden end}}
|6={{hidden begin|title=Genus: Trichovirus}}

Apple chlorotic leaf spot virus
Apricot pseudo-chlorotic leaf spot virus
Cherry mottle leaf virus
Grapevine berry inner necrosis virus
Grapevine Pinot gris virus
Peach mosaic virus
Phlomis mottle virus

{{hidden end}}
|7={{hidden begin|title=Genus: Unassigned}}

African oil palm ringspot virus
Banana mild mosaic virus
Banana virus X
Cherry green ring mottle virus
Cherry necrotic rusty mottle virus
Diuris virus A
Diuris virus B
Hardenbergia virus A
Sugarcane striate mosaic-associated virus

{{hidden end}}
|8={{hidden begin|title=Genus: Vitivirus}}

Actinidia virus A
Actinidia virus B
Grapevine virus A
Grapevine virus B
Grapevine virus D
Grapevine virus E
Grapevine virus F
Heracleum latent virus
Mint virus 2

{{hidden end}}
}}

}}^[2]

Structure

Viruses in Betaflexiviridae are non-enveloped, with flexuous and Filamentous geometries. The diameter is around 12-13 nm. Genomes are linear, around 6.5-9kb in length. The genome codes for 2 to 6 proteins.^[1]

Genus	Structure	Symmetry	Capsid	Genomic arrangement
Carlavirus	Filamentous	Non-enveloped	Linear	Monopartite
Citrivirus	Filamentous	Non-enveloped	Linear	Monopartite
Capillovirus	Filamentous	Non-enveloped	Linear	Monopartite
Vitivirus	Filamentous	Non-enveloped	Linear	Monopartite
Foveavirus	Filamentous	Non-enveloped	Linear	Monopartite
Tepovirus	Filamentous	Non-enveloped	Linear	Monopartite
Trichovirus	Filamentous	Non-enveloped	Linear	Monopartite

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, and tubule-guided viral movement.

Plants and fungi 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
Carlavirus	Plants	None	Viral movement; mechanical inoculation	Viral movement	Cytoplasm	Cytoplasm	Mechanical: insects
Citrivirus	Plants	None	Viral movement; mechanical inoculation	Viral movement	Cytoplasm	Cytoplasm	Unknown
Capillovirus	Pome fruits; citrus; pear	None	Viral movement; mechanical inoculation	Viral movement	Cytoplasm	Cytoplasm	Mechanical: seeds
Vitivirus	Plants	None	Viral movement; mechanical inoculation	Viral movement	Cytoplasm	Cytoplasm	Mechanical inoculation: pseudococcid mealybugs; Mechanical inoculation: aphids
Foveavirus	Plants	None	Viral movement; mechanical inoculation	Viral movement	Cytoplasm	Cytoplasm	Grafting
Tepovirus	Pome fruits; citrus; pear	None	Viral movement; mechanical inoculation	Viral movement	Cytoplasm	Cytoplasm	Grafting; propagating material
Trichovirus	Pome fruits; citrus; pear	None	Viral movement; mechanical inoculation	Viral movement	Cytoplasm	Cytoplasm	Grafting; propagating material

References

1. ^¹²{{cite web|title=Viral Zone|url=http://viralzone.expasy.org/all_by_species/739.html|publisher=ExPASy|accessdate=12 June 2015}}
2. ^¹{{cite web|last1=ICTV|title=Virus Taxonomy: 2014 Release|url=http://ictvonline.org/virusTaxonomy.asp|accessdate=12 June 2015}}

External links

Viralzone: Betaflexiviridae
ICTV

2 : Betaflexiviridae|Virus families

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