Characterization of a new densovirus infecting the German cockroach, Blattella germanica.
A new DNA virus (Parvoviridae: Densovirinae, Densovirus) was isolated and purified from descendants of field-collected German cockroaches, Blattella germanica. Viral DNA and cockroach tissues infected with B. germanica densovirus (BgDNV) were examined by electron microscopy. Virus particles, about 20 nm in diameter, were observed both in the nucleus and in the cytoplasm of infected cells. Virus DNA proved to be a linear molecule of about 1.2 microm in length. BgDNV isolated from infected cockroaches infected successfully and could be maintained in BGE-2, a B. germanica cell line. The complete BgDNV genome was sequenced and analysed. Five open reading frames (ORFs) were detected in the 5335 nt sequence: two ORFS that were on one DNA strand encoded structural capsid proteins (69.7 and 24.8 kDa) and three ORFs that were on the other strand encoded non-structural proteins (60.2, 30.3 and 25.9 kDa). Three putative promoters and polyadenylation signals were identified. Structural analysis of the inverted terminal repeats revealed the presence of extended palindromes. The genome structure of BgDNV was compared with that of other members of the family Parvoviridae; the predicted amino acid sequences were aligned and subjected to phylogenetic analyses.
Mukha
D V
DV
Vavilov Institute of General Genetics, Russian Academy of Sciences, Moscow 119991, Russia.
Chumachenko
A G
AG
Vavilov Institute of General Genetics, Russian Academy of Sciences, Moscow 119991, Russia.
Dykstra
M J
MJ
Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, Raleigh, NC 27606, USA.
Kurtti
T J
TJ
Department of Entomology, 219 Hodson Hall, 1980 Folwell Avenue, University of Minnesota, St Paul, MN 55108, USA.
Schal
C
C
Department of Entomology and W. M. Keck Center for Behavioural Biology, North Carolina State University, Raleigh, NC 27695, USA.
D000818:Animals; D001483:Base Sequence; D020048:Blattellidae / Q000648:ultrastructure* / Q000821:virology*; D002460:Cell Line; D003001:Cloning, Molecular; D004279:DNA, Viral / Q000032:analysis; D017990:Densovirus / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification / Q000472:pathogenicity*; D016679:Genome, Viral; D008854:Microscopy, Electron; D008969:Molecular Sequence Data; D016366:Open Reading Frames; D010802:Phylogeny; D017422:Sequence Analysis, DNA; D014764:Viral Proteins / Q000737:chemistry / Q000235:genetics
D004279:DNA, Viral; D014764:Viral Proteins