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J Gen Virol 88 (2007), 2312-2319; DOI 10.1099/vir.0.82860-0

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Phylogenetic relationships among sandfly fever group viruses (Phlebovirus: Bunyaviridae) based on the small genome segment

Fangling Xu, Hongli Chen, Amelia P. A. Travassos da Rosa, Robert B. Tesh and Shu-Yuan Xiao

Department of Pathology and Center for Biodefense and Emerging Infectious Diseases, University of Texas Medical Branch, Galveston, TX 77555-0609, USA

Correspondence
Shu-Yuan Xiao
syxiao{at}utmb.edu

The phleboviruses are more diverse in terms of arthropod vectors and antigenic relationships than most other genera of arthropod-borne viruses. In this study, 30 sandfly fever group viruses from the Naples, Sicilian, Punta Toro, Icoaraci and Frijoles serocomplexes were sequenced. Phylogenetic analyses were performed based on the sequence of the open reading frame for the nucleoprotein (N) and non-structural (NSs) protein genes of the small (S) segment. The five resultant genotypic lineages correlated with the serological grouping and were similar to analysis of M segment sequences. The sequence identity for N and NSs genes within the Sicilian, Naples, Punta Toro, Icoaraci and Frijoles serocomplexes was determined. The results indicated that genetic divergence for the S segment is lower than that for the M segment, suggesting that the S segment is more stable during evolution.

The GenBank/EMBL/DDBJ accession numbers for the sequences reported in this paper are EF201815–EF201844.

A table showing primers used for RT-PCR amplification of the whole S segment of phleboviruses is available with the online version of this paper.






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Copyright © 2007 by the Society for General Microbiology.