Transcriptome analysis and transient transformation suggest an ancient duplicated MYB transcription factor as a candidate gene for leaf red coloration in peach

• DOI: 10.1186/s12870-014-0388-y
• Publication Date: 2014-12-30T17:28:41Z
• Authors: Ying Zhou; Hui Zhou; Kui Lin-Wang; Sornkanok Vimolma...; Richard V Espley; Lu Wang; Andrew C Allan; Yuepeng Han
• Keywords: MYB

Leaf red coloration is an important characteristic in many plant species, including cultivars of ornamental peach (Prunus persica). Peach leaf color controlled by a single Gr gene on linkage group 6, with allele dominant over the green allele. Here, we report identification candidate peach. The leaves due to accumulation anthocyanin pigments, which regulated at transcriptional level. Based transcriptome comparison between red- and green-colored leaves, MYB transcription regulator PpMYB10.4 interval was identified regulate pigmentation leaf. Transient expression tobacco can induce anthocyain accumulation. Moreover, functional PpMYB10.2 3, homologous PpMYB10.4, also expressed both but plays no role coloration. This suggests complex mechanism underlying In addition, other anthocyanin-activating genes Rosaceae responsible for fruit are dated common ancestor about 70 million years ago (MYA). However, has diverged from these MYBs generate new family, regulates vegetative organs such as leaves. Activation ancient duplicated LG represents novel branch Rosaceae, able activate