Yang Yongqing, Lin Jing, Zheng Guijie, Zhang Mengchen, Zhi Haijian
National Center for Soybean Improvement, Nanjing Agricultural University, Nanjing, 210095, China.
Arch Virol. 2014 Jul;159(7):1793-6. doi: 10.1007/s00705-014-1980-z. Epub 2014 Jan 21.
Recombinant soybean mosaic virus (SMV-R) is a novel strain that has recently been identified. SMV-R was first isolated from Chongqing, China, and exhibits different pathogenicity on soybeans and common beans compared with normal soybean mosaic virus (SMV-N). SMV-R arose from a recombination event between SMV and bean common mosaic virus (BCMV) or a BCMV-like virus. In this study, we assessed the prevalence of SMV-R in Chinese soybean fields. Polymerase chain reaction results showed that SMV-R was common (16.7-60 %) in the central and southern provinces of China, based on 206 isolates collected from across China. Furthermore, the results from three provinces suggest that SMV-R strains are present in mixed infections with other SMV strains. Additionally, the phylogenetic status of SMV-R strongly supports a previous hypothesis that watermelon mosaic virus arose from a recombination event between SMV and a BCMV-like virus.
重组大豆花叶病毒（SMV-R）是最近发现的一种新型毒株。SMV-R最初从中国重庆分离得到，与普通大豆花叶病毒（SMV-N）相比，它对大豆和菜豆表现出不同的致病性。SMV-R是由SMV与菜豆普通花叶病毒（BCMV）或一种类BCMV病毒之间的重组事件产生的。在本研究中，我们评估了SMV-R在中国大豆田中的流行情况。聚合酶链反应结果显示，基于从中国各地收集的206个分离株，SMV-R在中国中部和南部省份较为常见（16.7%-60%）。此外，来自三个省份的结果表明，SMV-R毒株与其他SMV毒株存在混合感染。此外，SMV-R的系统发育地位有力地支持了先前的一个假设，即西瓜花叶病毒是由SMV与一种类BCMV病毒之间的重组事件产生的。
