Back to Search Start Over

An Iranian genomic sequence of Beet mosaic virus provides insights into diversity and evolution of the world population.

Authors :
Mohammadi M
Gibbs AJ
Hosseini A
Hosseini S
Source :
Virus genes [Virus Genes] 2018 Apr; Vol. 54 (2), pp. 272-279. Date of Electronic Publication: 2018 Jan 12.
Publication Year :
2018

Abstract

Beet mosaic virus (BtMV), the only Potyvirus known to infect sugar beet, occurs worldwide in beet crops. The full genome sequencing of a BtMV isolate from Iran (Ir-VRU), enabled us to better understand the evolutionary history of this virus. Selection analysis suggested that BtMV evolution is mainly under negative selection but its strength varies in different proteins with the multifunctional proteins under strongest selection. Recombination has played a major role in the evolution of the BtMVs; only the Ir-VRU and USA isolates show no evidence of recombination. The ML phylogenies of BtMVs from coat protein and full sequences were completely congruent. The primary divergence of the BtMV phylogeny is into USA and Eurasian lineages, and the latter then divides to form a cluster only found in Iran, and a sister cluster that includes all the European and Chinese isolates. A simple patristic dating method estimated that the primary divergence of the BtMV population was only 360 (range 260-490) years ago, suggesting an emergence during the development of sugar beet as a crop over the past three centuries rather than with the use of leaf beet as a vegetable for at least 2000 years.

Details

Language :
English
ISSN :
1572-994X
Volume :
54
Issue :
2
Database :
MEDLINE
Journal :
Virus genes
Publication Type :
Academic Journal
Accession number :
29330664
Full Text :
https://doi.org/10.1007/s11262-018-1533-8