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. 2017 Sep 1;8:1507. doi: 10.3389/fpls.2017.01507

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Copyright © 2017 Liu, Zhou, Qi, Chen, Liu, Liu and Ren.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Analyses of AcMYBF110. (A) Amino acid sequence alignment of AcMYBF110 and other plant anthocyanin-promoting MYBs. The R2 and R3 MYB motifs are indicated. The bHLH motif indicates residues needed for the interaction with the bHLH partner, box A and box B are well-conserved in anthocyanin-promoting MYBs. (B) Anthocyanin contents and expression profiles of AcMYBF110 in various tissues of ‘Hongyang’ and fruit cultivars. Le, leaves; St, stems; Pe, petals; Ov, ovary; YF, young fruits (10 days after pollination); QH, ‘Qihong’; DH, ‘Dohong’; ZG, Actinidia arguta var. purpurea; XX, ‘Xuxiang’; CX, ‘Cuixiang’; JK, Jinkui’. Data represent means ± SE of three replicates. (C) Subcellular localization of AcMYBF110 in Nicotiana benthamiana leaves. Scale bars: 50 μm. (D) Transient assays demonstrate the function of AcMYBF110 as a regulator of anthocyanin biosynthesis. (i) Assay leaves of AcMYBF110 exhibited anthocyanin accumulation. (ii) HPLC analysis of leaves injected with empty vector (CK) and 35S:AcMYBF110-GFP (OE). (iii,iv) Expression analysis of AcMYBF110 and key anthocyanin biosynthesis genes in CK and OE leaves. Data were analyzed with t-test. ^∗P < 0.05; ^∗∗P < 0.01; ^∗∗∗P < 0.001.