Fig. 4

Distribution of donors and receptors in the genome where gene conversion occurs. a Homologous distribution of donors and acceptors on chromosomes undergoing gene conversion. Curved lines within the inner circle are formed by 12 chromosomes of GJ colour coded to the seven ancestral chromosomes before the WGD event common to grasses [62]. Intra-loop curves show duplicated gene pairs in GJ. The three inner circles show the relationships of orthologous gene distribution between the three genomes in which gene conversion has occurred. The three outer circles show the distribution between the three genomes undergoing gene conversion, and the three inner circles show paralogous homologues. Different colours indicate donor (orange) or acceptor (pink) loci, as well as some uncertain loci (green). Among them, J_para represents the paralogous genes in GJ, J represents GJ, M represents XI-MH63, and Z represents XI-ZS97. b Local gene conversion and the distribution of donor and acceptor loci. Pink swatches represent donor loci, orange swatches represent acceptor loci, and green swatches represent those loci where donor or acceptor status is uncertain