作者: Kazusato Ohshima , Kosuke Matsumoto , Ryosuke Yasaka , Mai Nishiyama , Kenta Soejima
DOI: 10.1016/J.VIROL.2015.09.024
关键词: Phylogenetics 、 Biology 、 Molecular evolution 、 Reassortment 、 Population 、 Reassortant Viruses 、 Lineage (evolution) 、 Cucumber mosaic virus 、 Virology 、 Evolutionary biology 、 Cucumovirus
摘要: Cucumber mosaic virus (CMV) is a damaging pathogen of over 200 mono- and dicotyledonous crop species worldwide. It has the broadest known host range any virus, but timescale its evolution unknown. To investigate evolutionary history this we obtained genomic sequences 40 CMV isolates from brassicas sampled in Iran, Turkey Japan, combined them with published sequences. Our synonymous ('silent') site analyses revealed that present population progeny single ancestor existing 1550-2600 years ago, mostly radiated 295-545 ago. We found major lineages are not phylogeographically confined, recombination reassortment restricted to local populations no reassortant lineage more than 251 old. results highlight different patterns seen among viral pathogens brassica crops across world.