Fig. 4

Influence of regulatory types on the expression divergence between the parental species. a Absolute magnitude (fold-change) of parental expression divergence resulting from cis- and trans-regulatory changes. aza×che, Comparison between Camellia azalea and C. chekiangoleosa; aza×amp, Comparison between C. azalea and C. amplexicaulis. b Percentage of total regulatory divergence attributable to cis-regulatory changes (% cis) for genes with different magnitudes of expression divergence between parents. P1, parent1; P2, parent2; Blank, comparison between C. azalea and C. chekiangoleosa; Red, comparison between C. azalea and C. amplexicaulis. c and d Absolute magnitude (fold-change) of parental expression divergence resulting from different regulatory types. aza, C. azalea; che, C. chekiangoleosa; amp, C. amplexicaulis