A Repression-Activation System Involving miR164a-NACs Regulates Tissue-Specific Anthocyanin Accumulation in Peach Fruit.

ABSTRACT: Anthocyanins are often responsible for fruit colour, determining their commercial value and providing nutritional benefits. In this study, differential anthocyanin accumulation in peel, outer flesh near the peel (OF) and inner flesh around the stone (IF) was observed in two peach fruit cultivars. This was driven by the expression of the R2R3 MYB transcription factor (TF) gene PpMYB10.1. Transcriptome and degradome sequencing were used to identify the regulatory network upstream of PpMYB10.1. We identified and functionally verified that NAM/ATAF/CUC (NAC) TFs PpNAC22 and PpNAC100 are activators of anthocyanin accumulation. Protein-protein/DNA interaction assays were conducted, and it was observed that both PpNAC22 and PpNAC100 could form homodimers to directly activate the PpMYB10.1 promote

SUBMITTER: Liang L 

PROVIDER: S-EPMC12576431 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature