日本語フィールド
著者：Yasaka, R., Ohba, K., Schwinghamer, M.W., Fletcher, J., Ochoa-Corona, F.M., Thomas, J. E. Ho, S. Y. W., Gibbs, A. J., Ohshima, K.題名：Phylodynamic evidence of the migration of turnip mosaic potyvirus from Europe to Australia and New Zealand.発表情報：Journal of General Virology 巻: 96 号: 7010713 ページ: 701-713キーワード：概要：抄録：Turnip mosaic virus (TuMV) is a potyvirus that is transmitted by aphids and infects a wide range of
plant species. We investigated the evolution of this pathogen by collecting 32 isolates of TuMV,
mostly from Brassicaceae plants, in Australia and New Zealand. We performed a variety of
sequence-based phylogenetic and population genetic analyses of the complete genomic
sequences and of three non-recombinogenic regions of those sequences. The substitution rates,
divergence times and phylogeographical patterns of the virus populations were estimated. Six
= inter- and seven Australian and New Zealand isolates, and all were novel. Only one recombination-type pattern has
been found in both countries. The Australian and New Zealand populations were genetically
different, and were different from the European and Asian populations. Our Bayesian coalescent
analyses, based on a combination of novel and published sequence data from three nonrecombinogenic
protein-encoding regions, showed that TuMV probably started to migrate from
Europe to Australia and New Zealand more than 80 years ago, and that distinct populations arose
as a result of evolutionary drivers such as recombination. The basal-B2 subpopulation in Australia
and New Zealand seems to be older than those of the world-B2 and -B3 populations. To our
knowledge, our study presents the first population genetic analysis of TuMV in Australia and New
Zealand. We have shown that the time of migration of TuMV英語フィールド
Author：Yasaka, R., Ohba, K., Schwinghamer, M.W., Fletcher, J., Ochoa-Corona, F.M., Thomas, J. E. Ho, S. Y. W., Gibbs, A. J., Ohshima, K.Title：Phylodynamic evidence of the migration of turnip mosaic potyvirus from Europe to Australia and New Zealand.Announcement information:Journal of General Virology Vol: 96 Issue: 7010713 Page: 701-713An abstract：Turnip mosaic virus (TuMV) is a potyvirus that is transmitted by aphids and infects a wide range of
plant species. We investigated the evolution of this pathogen by collecting 32 isolates of TuMV,
mostly from Brassicaceae plants, in Australia and New Zealand. We performed a variety of
sequence-based phylogenetic and population genetic analyses of the complete genomic
sequences and of three non-recombinogenic regions of those sequences. The substitution rates,
divergence times and phylogeographical patterns of the virus populations were estimated. Six
= inter- and seven Australian and New Zealand isolates, and all were novel. Only one recombination-type pattern has
been found in both countries. The Australian and New Zealand populations were genetically
different, and were different from the European and Asian populations. Our Bayesian coalescent
analyses, based on a combination of novel and published sequence data from three nonrecombinogenic
protein-encoding regions, showed that TuMV probably started to migrate from
Europe to Australia and New Zealand more than 80 years ago, and that distinct populations arose
as a result of evolutionary drivers such as recombination. The basal-B2 subpopulation in Australia
and New Zealand seems to be older than those of the world-B2 and -B3 populations. To our
knowledge, our study presents the first population genetic analysis of TuMV in Australia and New
Zealand. We have shown that the time of migration of TuMV