Highly divergent cyclo-like virus in a great roundleaf bat (Hipposideros armiger) in Vietnam
Members of the viral family Circoviridae are increasingly recognized worldwide. Bats seem to be natural reservoirs or dietary-related dispensers of these viruses. Here, we report a distantly related member of the genus Cyclovirus detected in the faeces of a great roundleaf bat (Hipposideros armiger). Interestingly, the novel virus lacks a Circoviridae-specific stem-loop structure, although a Geminiviridae-like nonamer sequence was detected in the large intergenic region. Based on these differences and its phylogenetic position, we propose that our new virus represents a distant and highly divergent member of the genus Cyclovirus. However it is lacking several characteristics of members of the genus, which raises a challenge in its taxonomic classification.
KeywordsHipposideridae Guano ssDNA CRESS DNA virus Nucleotide composition analysis
This research was supported by the Hungarian Scientific Research Fund (OTKA) K112440. Research activity of F.J. was supported by TÁMOP (4.2.4.A/2-11-1-2012-0001) – National Excellence Program. K.K. was supported by the Szentágothai Talent Program (awarded by the Szentágothai Research Centre, University of Pécs). G.K. and F.J. were supported by the ÚNKP-16-3-III and ÚNKP-16-4-III – New Excellence Program of the Ministry of Human Capacities. The project has been supported by the European Union, co-financed by the European Social Fund: Comprehensive Development for Implementing Smart Specialization Strategies at the University of Pécs (EFOP-3.6.1.-16-2016-00004). The present scientific contribution is dedicated to the 650th anniversary of the foundation of the University of Pécs, Hungary. We gratefully acknowledge the funding provided by the Rufford Foundation.
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