This study was funded by project InAlentejo ALENT-07-0224-FEDER-001754 (Genosuber - Sequenciação do genoma do sobreiro). Financial support for AMR was provided by Investigador FCT (Fundação para a Ciência e a Tecnologia) project IF/01015/2013/CP1209/CT0001. Financial support for PB and AU was provided by projects InAlentejo ALENT-07-0224-FEDER-001754 and IF/01015/2013/ CP1209/CT0001. Funding was also provided by FCT project UID/AGR/00115/2013, and the FCT research unit UID/Multi/04551/2013 (GREEN-IT Bioresources for Sustainability). FCT funding of PMB (SFRH/BPD/86742/2012), and the IF grants of NS (IF/01126/2012), IAA (IF/00960/2013) and CM (IF/ 01168/2013) are also acknowledged. Financial support for ICh was provided by a postdoc scholarship from the EU project ELIXIR-EXCELERATE (H2020, ID 676559).