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The virus genus Densovirus belongs to the Densovirinae subfamily which belongs to the Parvoviridae family. The viruses of this genus are single-stranded DNA viruses (and are thus group II viruses under the Baltimore classification). The viruses of this genus are invertebrate viruses, infecting crustaceans and insects. Examples of species classified into this genus include Aedes albopictus densovirus, Galleria mellonella densovirus, and Junonia coenia densovirus.

Structure

These virions consist of non-enveloped capsids that have a round appearance and display icosahedral symmetry.^[1] The virions each have an isometric (and therefore spherical) nucleocapsid with a diameter of either 18-22 nm or 20-26 nm.^[1] Sixty capsomers are present in each capsid.^[1] The structure of each capsomer is described as "a quadrilateral 'kite-shaped' wedge"; the surface is said to have a rough appearance with small projections.^[1] The centre of capsids are sometimes visualised as appearing dark due to stain penetration in preparations where only a single species is retrieved. The virions do not appear to contain lipids. The buoyant density (in CsCl) of the virions is 1.4-1.44 g cm⁻³.^[1]

Genome

These viruses have non-segmented genomes that contains a single linear molecule of single-stranded DNA. The genome codes for structural proteins and is 5000 nucleotides in length and could either be negative-sense or positive-sense. Conserved nucleotide sequences of usually 120-300 or more nucleotides are present at the 3'-terminus and an inverted repeat of this could also be found at the 5'-terminus.^[1]

References

^ ^a ^b ^c ^d ^e ^f "Densovirinae". ICTVdB - The Universal Virus Database, version 4. http://www.ncbi.nlm.nih.gov/ICTVdb/ICTVdB/00.050.2.htm. Retrieved 2007-05-15.

External links

ViralZone: Densovirus

English Journal

ZIKA virus isolated from mosquitoes: a field and laboratory investigation in China, 2016.

Fu S1,2, Song S1,2,3, Liu H4, Li Y1,2,5, Li X1,2, Gao X1,2, Xu Z1,2, Liu G6, Wang D7, Tian Z7, Zhou J7, He Y1,2, Lei W1,2, Wang H1,2, Wang B3, Lu X8, Liang G9,10.
Science China. Life sciences.Sci China Life Sci.2017 Oct 19. doi: 10.1007/s11427-017-9196-8. [Epub ahead of print]
PMID 29058107

Use of a Recombinant Mosquito Densovirus As a Gene Delivery Vector for the Functional Analysis of Genes in Mosquito Larvae.

Liu PW1, Xu JB1, Dong YQ2, Chen XG1, Gu JB3.
Journal of visualized experiments : JoVE.J Vis Exp.2017 Oct 6;(128). doi: 10.3791/56121.
PMID 29053694

Prevalence, diversity and co-occurrence of the white spot syndrome virus, monodon baculovirus and Penaeus stylirostris densovirus in wild populations of Penaeus monodon in the Philippines.

Orosco FL1, Lluisma AO.
Diseases of aquatic organisms.Dis Aquat Organ.2017 Aug 9;125(3):199-206. doi: 10.3354/dao03150.
PMID 28792418

Japanese Journal

INSECTS REPORTS カイコ濃核病ウイルスと宿主の感染抵抗性機構(最終回)カイコ濃核病ウイルス研究

昆虫と自然 51(5), 32-34, 2016-05
NAID 40020855426

INSECTS REPORTS カイコ濃核病ウイルスと宿主の感染抵抗性機構(3)カイコ濃核病ウイルス1型抵抗性遺伝子とは?

昆虫と自然 51(4), 31-33, 2016-04
NAID 40020855329

INSECTS REPORTS カイコ濃核病ウイルスと宿主の感染抵抗性機構(2)カイコ濃核病ウイルス2型抵抗性遺伝子とは?

昆虫と自然 51(3), 35-38, 2016-03
NAID 40020855295

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