Fig. 4

SCMV genetic variation. Coordinates are based on the Ohio isolate (JX188385.1). a SNP distribution across the SCMV genome for all samples and by genetic group. b Partial polyprotein sequence alignment, using MAFFT, of Kenya samples in variation groups 1, 2 and 3, and isolates from other parts of the world relative to the Ohio isolate. The coat protein detected in the original description of maize lethal necrosis in Kenya was used for comparison (JX286708.1) [6]. NIb and coat protein coding sequences are color coded blue and red, respectively. Green background indicates variation