of stomatal density and distribution (Berger and Altmann, 2000)
and the serine/threonine-protein phosphatase 7 (PPP7) genes
involved in thermotolerance that regulate phytochrome signaling
in Arabidopsis (Liu et al., 2007). In addition, the malonyl-coenzyme A:anthocyanin 3-O-glucoside-6
00
-O-malonyltransfer-ase (3MAT) gene family was also expanded. This gene family
is closely associated with the content of anthocyanins
(Suzuki et al., 2002) and, when plants are drought tolerant,
anthocyanins are abundant (Nakabayashi et al., 2014). The
expansions of the above mentioned gene families in the
D. officinalegenome could be related to its drought resistant
nature (Figure 3A).