Strydom, ElreaPietersen, Gerhard2018-02-142018-05Strydom, E. & Pietersen, G. Diversity of partial RNA-dependent RNA polymerase gene sequences of soybean blotchy mosaic virus isolates from different host-, geographical- and temporal origins. Archives of Virology (2018) 163: 1299-1305. https://doi.org/10.1007/s00705-018-3722-0.0304-8608 (print)1432-8798 (online)10.1007/s00705-018-3722-0http://hdl.handle.net/2263/63948Infection of soybean by the plant cytorhabdovirus soybean blotchy mosaic virus (SbBMV) results in significant yield losses in the temperate, lower-lying soybean production regions of South Africa. A 277 bp portion of the RNA-dependent RNA polymerase gene of 66 SbBMV isolates from different: hosts, geographical locations in South Africa, and times of collection (spanning 16 years) were amplified by RT-PCR and sequenced to investigate the genetic diversity of isolates. Phylogenetic reconstruction revealed three main lineages, designated Groups A, B and C, with isolates grouping primarily according to geographic origin. Pairwise nucleotide identities ranged between 85.7% and 100% among all isolates, with isolates in Group A exhibiting the highest degree of sequence identity, and isolates of Groups A and B being more closely related to each other than to those in Group C. This is the first study investigating the genetic diversity of SbBMV.en© Springer-Verlag GmbH Austria, part of Springer Nature 2018. The original publication is available at : http://link.springer.comjournal/705.Soybean blotchy mosaic virus (SbBMV)RNA-dependent RNA polymerase geneMaximum-likelihood analysisPairwise nucleotide similarityPostprint Article