Figure 8.

Promoters of LOB1 (LATERAL ORGAN BOUNDARIES 1), LOB2 and DIOX (citrus dioxygenase) genes show nucleotide polymorphisms at PthA sites. The promoter regions of the citrus LOB1 (A), LOB2 (B) and DIOX (C) genes were amplified from ‘Pera’ and ‘Tahiti’ plants and compared with those of the Citrus sinensis ‘Valencia’ and C. clementine ‘Clemenules’ cultivars (Wu et al., 2014; Xu et al., 2013). The predicted PthA1‐, PthA2‐, PthA3‐ and PthA4‐binding sites are boxed in yellow, green, blue and red, respectively. The Dof‐ and WRKY‐binding sites are coloured in grey and light grey, respectively, whereas the TATA box elements are in purple. Arrows in (C) represent a Dof palindromic sequence. Most of the single nucleotide polymorphisms (SNPs) found in ‘Pera’ relative to ‘Tahiti’ plants are also present in ‘Valencia’ and ‘Clemenules’ cultivars.