Fig. 7: Model of the establishment of the Vitis and Muscadinia sex-determining regions in a highly conserved and flowering-associated region in angiosperms.

Schematic representations of the gene content in the homologous regions of the Vitis sex-determining region in angiosperms, Vitaceae, and Muscadinia and Vitis genera. The symbols ♀ and ♂ represent the female and male flower sex types. Arrows depict genes. The nonsense mutation in the candidate male-determining in grapes, VviINP1, is indicated with an X. The candidate female-suppressing (FS) gene VviYABBY3 is also indicated.