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Densoviruses in oyster Crassostrea ariakensis

Authors
  • Kang, Yan-Jun1, 2
  • Huang, Wei1
  • Zhao, A-li1
  • Lai, Dan-Dan1
  • Shao, Lin3
  • Shen, Yan-Qin1, 2
  • Deng, Xutao4
  • Delwart, Eric4
  • Zhang, Wen5
  • 1 Jiangnan University, Wuxi School of Medicine, Lihu Road 1800, Wuxi, Jiangsu, 214122, People’s Republic of China , Wuxi (China)
  • 2 Jiangnan University, Public Health Research Center, Lihu Road 1800, Wuxi, Jiangsu, 214122, People’s Republic of China , Wuxi (China)
  • 3 Affiliated Hospital of Jiangnan University, Huihe Road 200, Wuxi, Jiangsu, 214062, People’s Republic of China , Wuxi (China)
  • 4 University of California San Francisco, Department of Laboratory Medicine, Blood Systems Research Institute, San Francisco, CA, USA , San Francisco (United States)
  • 5 Jiangsu University, School of Medicine, 301 Xuefu Road, Zhenjiang, Jiangsu, 202103, People’s Republic of China , Zhenjiang (China)
Type
Published Article
Journal
Archives of Virology
Publisher
Springer-Verlag
Publication Date
Mar 24, 2017
Volume
162
Issue
7
Pages
2153–2157
Identifiers
DOI: 10.1007/s00705-017-3343-z
Source
Springer Nature
Keywords
License
Yellow

Abstract

Densoviruses have short ssDNA genomes and mainly infect arthropods. To characterize viral nucleic acid in shellfish, oysters (Crassostrea ariakensis) were analyzed using viral metagenomics. Two large de novo assembled contigs, CaaDV1 and CaaDV2, consisting of nearly complete densovirus genomes (5860 nucleotides (nt) and 4034 nt) with two major ambisense protein coding regions were identified. Several potential non-structural proteins and capsid proteins were encoded by these genomes, but these were divergent from the existing densoviral species. The NS1 protein of the two CaaDVs shared 43.3%~61.5% amino acid identities with the sea star-associated densovirus and cherax quadricarinatus densovirus, with the four species clustering by phylogenetic analysis. This is the first report of densovirus detection in shellfish, increasing the potential host range of densoviruses and the genetic diversity of the genus Ambidensovirus.

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