The MYB transcription factor PbMYB12b positively regulates flavonol biosynthesis in pear fruit.

ABSTRACT:

Background

As a class of natural antioxidants in plants, fruit flavonol metabolites are beneficial to human health. However, the regulatory networks for flavonol biosynthesis in most fruits are largely unknown. Previously, we reported a spontaneous pear bud sport 'Red Zaosu' (Pyrus bretschneideri Rehd.) with a high flavonoid content in its fruit. The identification of the flavonol biosynthetic regulatory network in this mutant pear fruit is crucial for elucidating the flavonol biosynthetic mechanism in fruit.

Results

Here, we demonstrated the PbMYB12b positively regulated flavonols biosynthesis in 'Red Zaosu' fruit. Initially, we investigated the accumulation patterns of four major quercetin glycosides and two major isorhamnetin glycosides in the fruit of 'Red Zaosu' and its

SUBMITTER: Zhai R 

PROVIDER: S-EPMC6385385 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature