Fig. 4: Evidences for whole-genome duplication events in O. fragrans.

a 4DTV; b the most abundant genes (red bar: duplicated genes, green: non-duplicated, 0: tandem-duplicated or small-scale-duplicated genes; 0–12, number of duplicated copies) in a four-fold relationship when comparing O. fragrans and grapes. c A colinear relationship at the chromosome level. d Four-fold expansion of the functional homologs of glycosyltransferase and bHLH-MYC genes in grape (GSVIVT) and O. frgrans (evm.model.Contig). The data suggest that O. fragrans experienced two WGD events