Shepherd Dionne N, Varsani Arvind, Windram Oliver P, Lefeuvre Pierre, Monjane Adérito L, Owor Betty E, Martin Darren P
Department of Molecular and Cell Biology, University of Cape Town, Private Bag, Rondebosch, 7701, South Africa.
Arch Virol. 2008;153(3):605-9. doi: 10.1007/s00705-007-0016-3. Epub 2008 Jan 4.
The sugarcane infecting streak viruses (SISVs) are mastreviruses (Family Geminiviridae) belonging to a group of "African streak viruses" (AfSVs) that includes the economically devastating Maize streak virus (MSV). Although there are three currently described SISV species (Sugarcane streak virus [SSV], Sugarcane streak Egypt virus [SSEV] and Sugarcane streak Réunion virus [SSRV]), only one strain variant has been fully sequenced for each of these species and as a result very little is known about the diversity and evolutionary origins of the SCISVs. Here we present annotated full genome sequences of four new SISV isolates, including a new strain of both SSRV and SSV, and one potentially new SISV species, sampled from wild grasses in La Réunion and Zimbabwe. For the first time, we report the finding of SSRV isolates in Zimbabwe and SSV isolates on the island of La Réunion. Phylogenetic and recombination analyses indicate continent-wide SSRV strain diversity and that our isolate potentially representing a new SISV species is a recombinant.
感染甘蔗的条纹病毒（SISVs）属于双生病毒科的玉米线条病毒属，是“非洲条纹病毒”（AfSVs）的一部分，其中包括对经济造成严重破坏的玉米条纹病毒（MSV）。虽然目前已描述了三种SISV物种（甘蔗条纹病毒[SSV]、甘蔗埃及条纹病毒[SSEV]和甘蔗留尼汪条纹病毒[SSRV]），但每种物种仅对一个株系变体进行了全序列测定，因此对SCISVs的多样性和进化起源了解甚少。在此，我们展示了四个新的SISV分离株的注释全基因组序列，包括一个新的SSRV株系和一个新的SSV株系，以及一个可能的新SISV物种，这些分离株采自留尼汪和津巴布韦的野草。我们首次报告在津巴布韦发现了SSRV分离株，在留尼汪岛发现了SSV分离株。系统发育和重组分析表明，SSRV株系在整个大陆存在多样性，并且我们的分离株可能代表一个新的SISV物种，它是一个重组体。
