PrMYB5 activates anthocyanin biosynthetic PrDFR to promote the distinct pigmentation pattern in the petal of Paeonia rockii.

ABSTRACT: Paeonia rockii is well-known for its distinctive large dark-purple spot at the white petal base and has been considered to be the main genetic source of spotted tree peony cultivars. In this study, the petal base and petal background of Paeonia ostii (pure white petals without any spot), P. rockii, and other three tree peony cultivars were sampled at four blooming stages from the small bell-like bud stage to the initial blooming stage. There is a distinct difference between the pigmentation processes of spots and petal backgrounds; the spot pigmentation was about 10 days earlier than the petal background. Moreover, the cyanin and peonidin type anthocyanin accumulation at the petal base mainly contributed to the petal spot formation. Then, we identified a C1 subgroup R2

SUBMITTER: Shi Q 

PROVIDER: S-EPMC9382232 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature