Genomic analysis uncovers functional variation in the C-terminus of anthocyanin-activating MYB transcription factors.

ABSTRACT: MYB transcription factors regulate diverse aspects of plant development and secondary metabolism, often by partnering in transcriptional regulatory complexes. Here, we harness genomic resources to identify novel MYBs, thereby producing an updated eudicot MYB phylogeny with revised relationships among subgroups as well as new information on sequence variation in the disordered C-terminus of anthocyanin-activating MYBs. BLAST® and hidden Markov model scans of gene annotations identified a total of 714 MYB transcription factors across the genomes of four crops that span the eudicots: apple, grape, kiwifruit and tomato. Codon model-based phylogenetic inference identified novel members of previously defined subgroups, and the function of specific anthocyanin-activating subgroup 6 members was as

SUBMITTER: Rodrigues JA 

PROVIDER: S-EPMC8012628 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature