Geographic distribution of collection sites for the A. thaliana accessions used in this study. Latitude and longitude data are from ABRC or from accession collectors. Abbreviations: Canary Isands, CAN; Columbia and Landsberg, COL; Cape Verde Islands, CVI; Edinburgh, EDI; Estland, EST; Kashmir, KAS; Moscow, MS; Oystese, OY; Petergof, PET; Muhlen, MH; Pamiro-Alay, SHA; Tsu, TSU; Vranov u Brna, JI; Florence, FL; Kent, KEN; Bretagny Sur Orge, BSO; Gronsvik, GRO; Ørnes, OR; Storesand, ST; Skatval, SK. College Park, Maryland is marked with an asterisk.