Open AccessComplete genome sequence of a new member of the genus Badnavirus, Dioscorea bacilliform RT virus 3, reveals the first evidence of recombination in yam badnaviruses
Author(s) -
Moritz Bömer,
Ajith I. Rathnayake,
Paul Visendi,
Gonçalo Silva,
Susan Seal
Publication year - 2017
Publication title -
archives of virology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.943
H-Index - 110
eISSN - 1432-8798
pISSN - 0304-8608
DOI - 10.1007/s00705-017-3605-9
Subject(s) - biology , dioscorea , genetics , genome , whole genome sequencing , recombination , virology , gene , medicine , alternative medicine , pathology
Yams (Dioscorea spp.) host a diverse range of badnaviruses (genus Badnavirus, family Caulimoviridae). The first complete genome sequence of Dioscorea bacilliform RT virus 3 (DBRTV3), which belongs to the monophyletic species group K5, is described. This virus is most closely related to Dioscorea bacilliform SN virus (DBSNV, group K4) based on a comparison of genome sequences. Recombination analysis identified a unique recombination event in DBRTV3, with DBSNV likely to be the major parent and Dioscorea bacilliform AL virus (DBALV) the minor parent, providing the first evidence for recombination in yam badnaviruses. This has important implications for yam breeding programmes globally.