Table S1. Putative ORFs predicted inside the Co region. In bold the transcripts belonging to possible candidate genes. Sequence name Genome Browser ORF (bp) AUGUSTUS integrase MDP0000897594 MDP0000326311 MDP0000524262 MDP0000136858 MDP0000367163 MDP0000284965 MYB transcription factor mRNA splicing factor PABP-interacting motif DNA mismatch repair protein phosphate transporter actin depolymerizing factor 3234 123 395 432 120 7218 MDP0000508371 phosphate transporter 1616 MDP0000186457 MDP0000855671 maintenance of chromosome 1 AP2 transcription factor 3957 752 MDP0000187369 AP2 transcription factor 655 MDP0000286915 AP2 transcription factor 5151 putative MYB transcription factor pre-mRNA-splicing factor SLU7 ORF (bp) GENSCAN 1348 integrase ORF (bp) 660 690 1623 putative MYB transcription factor pre-mRNA-splicing factor SLU7-A-like 936 1656 432 putative COBL7 927 putative COBL7 DNA mismatch repair protein Msh2 phosphate transporter, putative actin depolymerizing factor UPF0420 protein C16orf58 homolog phosphate transporter, putative 789 627 441 DNA mismatch repair protein Msh2 inorganic phosphate transporter, putative actin depolymerizing factor 1215 627 399 1380 1617 UPF0420 protein C16orf58 homolog phosphate transporter putative reverse transcriptase 1434 864 1353 AP2/ERF transcription factor AP2/ERF transcription factor putative reverse transcriptase gag-pol polyprotein putative polyprotein 759 759 489 1926 2205 AP2/ERF transcription factor AP2/ERF transcription factor 864 1527 Putative gag-pol polyprotein 1130 putative Zinc knuckle containing protein ethylene-responsive transcription factor ethylene-responsive transcription factor ribonuclease E 2061 putative COBL7 735 putative reverse transcriptase putative COBL7 2076 1581 eth-responsive transcription factor eth-responsive transcription factor ribonuclease E RING-H2 finger protein ATL79 putative COBL7 hyoscyamine 6-dioxygenase-like putative reverse transcriptase putative COBL7 438 720 1650 501 546 1020 1275 537 453 498 1671 MDP0000187760 1496 autophagy-related protein 9-like 2562 autophagy-related protein 9-like 2460 MDP0000927091 protein autophagy 9 homology to kinesin light chain 4840 1515 kinesin light chain, putative 864 MDP0000287209 ring finger protein 3363 kinesin light chain, putative RING-H2 finger protein ATL1like putative reverse transcriptase auxin-induced protein 5NG4 723 2029 1050 ring finger protein, putative putative reverse transcriptase auxin-induced protein 5NG4 1905 1086 639 MDP0000934866 gal-1-phosphate uridylyltransferase 2457 gal-1-phosphate uridyltransferase formate-tetrahydrofolate ligase 995 780 formate-tetrahydrofolate ligase, putative 1443 basic helix-loop-helix protein 2211 basic helix-loop-helix-containing protein gal-1-phosphate uridyl transferase 2160 768 MDP0000139773 NAM transcription factor 1044 MDP0000934869 basic helix-loop-helix protein 535 Molecular Breeding Paolo Baldia, Pieter Jacobus Woltersa, Matteo Komjanca, Roberto Violaa, Riccardo Velascoa and Silvio Salviab Genetic and physical characterization of the locus controlling columnar habit in apple (Malus x domestica Borkh.) a IASMA Research and Innovation Center, Fondazione Edmund Mach, via E. Mach 1 - 38010 - San Michele all'Adige, Italy b Faculty of Agriculture, University of Bologna, viale Fanin 44 - 40127 - Bologna, Italy Corresponding author: Paolo Baldi, IASMA Research and Innovation Center, Fondazione Edmund Mach Genomics and Crop Biology Area e-mail: paolo.baldi@fmach.it Tel: +39-0461-615378 Fax: +39-0461-615189