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Transcriptomic and metabolic profiles of apple peels in different colors

ABSTRACT: Apple is a woody tree in the Rosaceae family, genus Apple. It has been widely reported that MYBs are critical regulators for red color of apple peel by activating the expression of anthocyanin biogenesis genes. However, it is still not clear what is the molecular mechanism for the yellow color of apple peel. In order to investigate key genes and metabolites responsible for yellow coloration of apple peel, three strains of apples, "Venus Gold (Ype)" with yellow peel, "Yanfu8 (Mpe)" with medium red peel, and "Red love" with dark red peel, were selected in this study. Transcriptomic and metabolomic profiles were obtained for the peels of the three apple strains, respectively. After analyzing the transcriptomic profiles, our results suggest that DFR and LAR1 are two critical genes for the yellow color of Ype peel. Analysis of metabolomic profiles revealed that the abundances of Catechin and Epicatechin in Ype peel was higher than that of Rpe, indicating an important reason for the yellow color of Ype peel. Furthermore, when comparing volatile metabolites from Ype, Mpe and Rpe, hundreds of volatile metabolites show significantly differently abundances, suggesting that apples with different peel colors have different odors. In summary, our results provide new insights into the yellow coloration for the peels of some apple cultivars.

ORGANISM(S): Malus domestica

PROVIDER: GSE304477 | GEO | 2025/12/04

REPOSITORIES: GEO

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