Comparisons of the genetic structure of populations of Turnip mosaic virus in West and East Eurasia
UNSPECIFIED. (2004) Comparisons of the genetic structure of populations of Turnip mosaic virus in West and East Eurasia. VIROLOGY, 330 (2). pp. 408-423. ISSN 0042-6822Full text not available from this repository.
Official URL: http://dx.doi.org/10.1016/j.virol.2004.09.040
The genetic structure of populations of Turnip mosaic writs (TuMV) in Eurasia was assessed by making host range and gene sequence comparisons of 142 isolates. Most isolates collected in West Eurasia infected Brassica plants whereas those from East Eurasia infected both Brassica and Raphamus plants. Analyses of recombination sites (RSs) in five regions of the genome (one third of the full sequence) showed that the protein 1 (P1 gene) had recombined more frequently than the other gene regions in both subpopulations, but that the RSs were located in different parts of the genomes of the subpopulations. Estimates of nucleotide diversity showed that the West Eurasian subpopulation was more diverse than the East Eurasian subpopulation, but the Asian-BR group of the genes from the latter subpopulation had a greater nonsynonymous/synonymous substitution ratio, especially in the PI, viral genome-linked protein (VPg) and nuclear inclusion a proteinase (NIa-Pro) genes. These subpopulations seem to have evolved independently from the ancestral European population, and their genetic structure probably reflects founder effects. (C) 2004 Elsevier Inc. All rights reserved.
|Item Type:||Journal Article|
|Subjects:||Q Science > QR Microbiology > QR355 Virology|
|Journal or Publication Title:||VIROLOGY|
|Publisher:||ACADEMIC PRESS INC ELSEVIER SCIENCE|
|Date:||20 December 2004|
|Number of Pages:||16|
|Page Range:||pp. 408-423|
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