PT - JOURNAL ARTICLE AU - Mélanie Massonnet AU - Noé Cochetel AU - Andrea Minio AU - Amanda M. Vondras AU - Aline Muyle AU - Jerry Lin AU - Jadran F. Garcia AU - Yongfeng Zhou AU - Massimo Delledonne AU - Summaira Riaz AU - Rosa Figueroa-Balderas AU - Brandon S. Gaut AU - Dario Cantu TI - The genetic basis of sex determination in grapevines (<em>Vitis spp.</em>) AID - 10.1101/2019.12.11.861377 DP - 2019 Jan 01 TA - bioRxiv PG - 2019.12.11.861377 4099 - http://biorxiv.org/content/early/2019/12/12/2019.12.11.861377.short 4100 - http://biorxiv.org/content/early/2019/12/12/2019.12.11.861377.full AB - Sex determination in grapevine evolved through a complex succession of switches in sexual systems. Phased genomes built with single molecule real-time sequencing reads were assembled for eleven accessions of cultivated hermaphrodite grapevines and dioecious males and females, including the ancestor of domesticated grapevine and other related wild species. By comparing the phased sex haplotypes, we defined the sex locus of the Vitis genus and identified polymorphisms spanning regulatory and coding sequences that are in perfect association with each sex-type throughout the genus. These findings identified a novel male-fertility candidate gene, INP1, and significantly refined the model of sex determination in Vitis and its evolution.