Chicory MYB transcription factors CiMYB3, 4, and 5 are closely related to the Arabidopsis R2R3-MYB subgroup 20 that regulate abiotic stress responses. Phylogenetic relationship of 34 chicory R2R3-MYB factors to Arabidopsis R2R3-MYB factors (in blue color) belonging to subgroup 20 (S20) and subgroup 1 (S1) that are involved in abiotic stress and biotic stress regulation, respectively (Dubos et al., 2010). Phylogenetic analysis was performed with Phylogeny.fr (Dereeper et al., 2010). Accession numbers of chicory R2R3-MYBs: CiMYB1 (KY354365), CiMYB3 (KY354366), CiMYB4 (KY354367), and CiMYB5 (KY354368); Arabidopsis S20 members: AtMYB2 (AT2G47190), AtMYB62 (AT1G68320), AtMYB78 (AT5G49620), AtMYB108 (AT3G06490), AtMYB112 (AT1G48000), and AtMYB116 (AT1G25340); Arabidopsis S1 members: AtMYB30 (AT3G28910), AtMYB31 (AT1G74650), AtMYB60 (AT1G08810.1), AtMYB94 (AT3G47600), and AtMYB96 (AT5G62470.2).