Mubin Muhammad, Mansoor Shahid, Briddon Rob W
Virus Genes. 2012 Jun;44(3):536-8. doi: 10.1007/s11262-011-0711-8.
Recombination is a major driver of diversification of geminiviruses and is believed to be, for a large part, responsible for the present taxonomic structure of the family Geminiviridae. Examples of recent intergeneric recombination between viruses of the genera Begomovirus and Mastrevirus remain to be identified. Here, we show that one of the prerequisites for begomovirus-mastrevirus intergeneric recombination, co-infection of a single plant, does occur. The lack of reported recombination between viruses of these two genera may suggest that there are constraints to viable intergeneric recombinant viruses being produced, possibly due to the extreme genetic distances between extant begomo- and mastreviruses.
重组是双生病毒多样化的主要驱动因素，并且在很大程度上被认为是双生病毒科目前分类结构的成因。菜豆金色花叶病毒属（Begomovirus）和玉米线条病毒属（Mastrevirus）病毒之间近期发生属间重组的例子仍有待确定。在此，我们表明，菜豆金色花叶病毒属病毒与玉米线条病毒属病毒发生属间重组的一个先决条件，即单一植株的共同感染，确实会发生。这两个属的病毒之间缺乏重组报道，可能表明产生有活力的属间重组病毒存在限制因素，这可能是由于现存的菜豆金色花叶病毒属病毒和玉米线条病毒属病毒之间存在极大的遗传距离。
