Fig. 4

Collinearity of the LFY-associated genomic blocks in representative angiosperm genomes. a Neighboring genomic region of the LFY locus in the grapevine (Vitis vinifera) genome is syntenic to another two genomic blocks without LFY genes, which together constituted the gamma triplicated genomic blocks. b Neighboring genomic region of the LFY locus in rice (Oryza sativa) genome is syntenic to another genomic blocks without LFY gene, which is congruent to the rho event. c, d Synonymous substitutions (Ks) distributions of the LFY loci neighboring syntelogs in rice and grapevine genomic blocks (Supplementary Data 6), providing molecular dating evidences supporting the ancestral polyploidy events. e Multiple genomic synteny alignments of the LFY-associated genomic blocks in representative species, including two monocots (Zostera marina and Musa acuminata), three rosids (Populus trichocarpa, Arabidopsis thaliana, and Vitis vinifera), one asterid (Solanum lycopersicum), the basal eudicot (Aquilegia coerulea), and the basal angiosperm (Amborella trichopoda). The syntenic connections of the LFY gene loci were highlighted with orange strips. f The transposed LFY genes in the grasses rice (Oryza sativa) and sorghum (Sorghum bicolor) were located in very conserved syntenic genomic regions, but the neighboring regions are syntenic to genomic regions not associated with LFY genes in grapevine and Amborella genomes. The plant species were depicted as their abbreviated five-letter scientific names, the chromosome/scaffold numbers and genomic block coordinates were also included. Genes on forward and reverse strands were depicted as blue and green blocks, respectively