Genome-Wide Identification and Comparative Profiling of MicroRNAs Reveal Flavonoid Biosynthesis in Two Contrasting Flower Color Cultivars of Tree Peony.

ABSTRACT: MicroRNA (miRNA)-mediated gene regulation is involved in various physiological processes in plants. Flower color is one of the vital ornamental traits of tree peony (Paeonia suffruticosa Andr.). However, the yellow-flowered tree peony cultivars are particularly rare. To elucidate the miRNA-mediated gene regulatory mechanism underlying yellow pigmentation in tree peony, we combined pigment assessment, miRNA identification, expression analysis, and gene functional verification in two contrasting flower color cultivars "High Noon" and "Roufurong." Flavones/flavonols and anthocyanins were found to be the main contributors to the coloration of "High Noon" and "Roufurong" petals, respectively. Subsequently, miRNA analysis based on available genome data identified 9 differentially expresse

SUBMITTER: Luo X 

PROVIDER: S-EPMC8763678 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature