Taxobox color violet name Ascovirus image image caption virus group i familia Ascoviridae genus Ascovirus subdivision ranks Species subdivision Diadromus pulchellus ascovirus br Spodoptera exigua ascovirus 5a br Spodoptera frugiperda ascovirus 1a br Spodoptera frugiperda ascovirus 1d br Trichoplusia ni ascovirus 2 br Ascovirus is a Family biology family of double strand DNA viruses that infect primarily invertebrates . ref ICTVdB Management 2006 . 00.082.0.01. Ascovirus. In ICTVdB The Universal Virus Database, version 4. B chen Osmond, C. Ed , Columbia University, New York, USA ref Currently only a single genus in this family is recognised Ascovirus. Six species in this genus are currently known. The type species is Spodoptera frugiperda ascovirus 1a which infects the army worm Spodoptera frugiperda . Other species include Spodoptera frugiperda ascovirus 1d. ref name Xue2011 Xue JL, Cheng XW 2011 Comparative analysis of a highly variable region of the genomes between Spodoptera frugiperda ascovirus 1d SfAV 1d and SfAV 1a. J Gen Virol ref Genome The genome is not segmented and contains a single molecule of circular double stranded DNA . The genome has a guanine cytosine content of 42 60 . The genome of Spodoptera frugiperda ascovirus 1a has been sequenced. ref name Bideshi DK, Demattei MV, Rouleux Bonnin F, Stasiak K, Tan Y, Bigot S, Bigot Y, Federici BA 2006 Genomic sequence of Spodoptera frugiperda Ascovirus 1a, an enveloped, double stranded DNA insect virus that manipulates apoptosis for viral reproduction. J Virol. 80 23 11791 1805. ref It is 156,922 bases in length and encodes 123 putative open reading frames. The G C ratio is 49.2 . Among the encoded proteins are a caspase , a cathepsin B , several kinase s, E3 ubiquitin ligase s, a fatty acid elongase , a sphingomyelinase , a phosphate acyltransferase and a patatin like phospholipase . Virology The virions consist ... it Ascovirus ... more details
Taxobox color violet name Ascovirus image image caption virus group i subdivision ranks Families subdivision Asfarviridae br Iridoviridae br Marseilleviridae br Megaviridae br Mimiviridae br Phycodnaviridae br Poxviridae br The nucleocytoplasmic large DNA viruses or NCLDV refers to a number of families of large eukaryotic DNA virus es Asfarviridae Iridoviridae Marseilleviridae Megaviridae Mimiviridae Phycodnaviridae Poxviridae One unassigned genus Dinodnavirus also belongs to this clade. Reasons for NCLDV Grouping All have both common and unique features of genomic DNA and virion structure. It remains uncertain whether the similarities of different families of this grouping of NCLDV are due to independent recruitment of the same or related host genes during viral replication or if they simply share a common viral ancestor, although the latter is under heavy scrutiny and controversy ref Lakshminarayan M. Iyer, L. Aravind, and Eugene V. Koonin. Common Origin of Four Diverse Families of Large Eukaryotic DNA Viruses. Journal of Virology, December 2001, p. 11720 11734, Vol. 75, No. 23. http www.ncbi.nlm.nih.gov entrez utils fref.fcgi?PrId 3051&itool AbstractPlus def&uid 11689653&db pubmed&url http jvi.asm.org cgi pmidlookup?view long&pmid 11689653 Link . ref There are 47 NCLDVs core genes currently recognised. These include the four key proteins are involved in DNA replication and repair. These include the enzymes DNA polymerase family B, the topoisomerase II A, the Flap endonuclease and the processing factor Proliferating Cell Nuclear Antigen . Other proteins include the DNA dependant RNA polymerase II and transcription factor II B. It is probable that these viruses evolved before the separation of eukaryoyes into the extant crown groups. The ancestral genome was complex with at least 41 genes including 1 the replication machinery 2 up to four RNA polymerase subunits 3 at least three transcription factors 4 capping and polyadenylation enzymes 5 the DNA packaging apparatus ... more details
s. Species of the families Ascovirus , Baculovirus , Hytrosaviridae , Iridoviridae and Polydnaviruses ... ascovirus Ascoviridae , mammalian herpesviruses Herpesviridae , fish lymphocystis disease virus ... more details
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