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A complete ancient RNA genome : identification, reconstruction and evolutionary history of archaeological Barley Stripe Mosaic Virus

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Smith, Oliver , Clapham, Alan J., Rose, Pam, Liu, Yuan, Wang, Jun and Allaby, Robin G. (2014) A complete ancient RNA genome : identification, reconstruction and evolutionary history of archaeological Barley Stripe Mosaic Virus. Scientific Reports, Volume 4 . Article number 4003. doi:10.1038/srep04003

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Official URL: http://dx.doi.org/10.1038/srep04003

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Abstract

The origins of many plant diseases appear to be recent and associated with the rise of domestication, the spread of agriculture or recent global movements of crops. Distinguishing between these possibilities is problematic because of the difficulty of determining rates of molecular evolution over short time frames. Heterochronous approaches using recent and historical samples show that plant viruses exhibit highly variable and often rapid rates of molecular evolution. The accuracy of estimated evolution rates and age of origin can be greatly improved with the inclusion of older molecular data from archaeological material. Here we present the first reconstruction of an archaeological RNA genome, which is of Barley Stripe Mosaic Virus (BSMV) isolated from barley grain ~750 years of age. Phylogenetic analysis of BSMV that includes this genome indicates the divergence of BSMV and its closest relative prior to this time, most likely around 2000 years ago. However, exclusion of the archaeological data results in an apparently much more recent origin of the virus that postdates even the archaeological sample. We conclude that this viral lineage originated in the Near East or North Africa, and spread to North America and East Asia with their hosts along historical trade routes.

Item Type: Journal Article
Subjects: Q Science > QH Natural history > QH301 Biology
Q Science > QH Natural history > QH426 Genetics
Divisions: Faculty of Science > Life Sciences (2010- )
Library of Congress Subject Headings (LCSH): RNA , Genomes , Barley stripe mosaic virus
Journal or Publication Title: Scientific Reports
Publisher: Nature Publishing Group
ISSN: 2045-2322
Official Date: 6 February 2014
Dates:
DateEvent
6 February 2014Published
Volume: Volume 4
Number of Pages: 6
Article Number: Article number 4003
DOI: 10.1038/srep04003
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access
Funder: Biotechnology and Biological Sciences Research Council (Great Britain) (BBSRC)
Grant number: BBG0177941 (BBSRC)

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