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J Gen Virol 86 (2005), 2169-2173; DOI 10.1099/vir.0.80898-0

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© 2005 Society for General Microbiology

Short Communication

Nucleotide sequence and genomic organization of a newly isolated densovirus infecting Dendrolimus punctatus

Junping Wang, Jiamin Zhang, Hong Jiang, Chuanfeng Liu, Fuming Yi and Yuanyang Hu

Laboratory of Insect Virology, College of Life Sciences, Wuhan University, Wuhan 430072, China

Correspondence
Yuanyang Hu
yyhu{at}whu.edu.cn

The nucleotide sequence of a novel icosahedral DNA virus infecting Dendrolimus punctatus has been determined. The genome is 5039 nt long and includes inverted terminal repeats of 200 nt containing 131 nt long J-shaped terminal hairpins. The ‘plus' strand of the genome contains three large open reading frames (ORFs), the left and the mid-ORFs (within the left ORF) in the left-half encoding the non-structural proteins and the right ORF in the right-half encoding viral capsid proteins. NS1 protein contains conserved replication initiation and DNA-dependent ATPase/helicase domains. VP1 protein contains a conserved PGY and phospholipase A2 motifs and shows high identities with VPs of Casphalia extranea densovirus and Bombyx mori densovirus-1 belonging to the genus Iteravirus. Phylogenetic analysis also revealed that this virus is most closely related to Casphalia extranea densovirus and Bombyx mori densovirus-1. Consequently, this virus was considered as a new third member of the genus Iteravirus of the subfamily Densovirinae, and designated Dendrolimus punctatus densovirus.

The GenBank/EMBL/DDBJ accession number of the nucleotide sequence reported in this paper is AY665654.




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