Apple miRNA targets. A, Unrooted phylogenetic tree of apple and Arabidopsis class III HD Zip transcription factors. B, The miR166 target sites. C, The miR394 complementary sites are identical between Arabidopsis F-box and MdF-box1 RNA. D, A phylogenetic tree of Arabidopsis ARF10, ARF16, ARF17 and MdARF16, rooted against Arabidopsis ARF6 protein sequence. E, The miR160 target sites are identical between Arabidopsis ARF17 and MdARF16. F, Complementary miR164 site in MdNAC. *, identical nucleotides in Arabidopsis and apple miRNA complementary sequences.