Three metabolic pathways are responsible for the accumulation and maintenance of high AsA content in kiwifruit (Actinidia eriantha).

ABSTRACT:

Background

Actinidia eriantha is a precious material to study the metabolism and regulation of ascorbic acid (AsA) because of its high AsA content. Although the pathway of AsA biosynthesis in kiwifruit has been identified, the mechanism of AsA metabolism and regulation is still unclear. The purpose of this experiment is to reveal the AsA metabolic characteristics of A. eriantha 'Ganmi 6' from the molecular level, and lay a theoretical foundation for the research on the genetic improvement of kiwifruit quality.

Results

We found that AsA reached the accumulation peak at S7 (110 DAF) during the process of fruit growth and development. The activity of GalDH, GalLDH, MDHAR and DHAR in fruit was similar to AsA accumulation trend, and both of them were significantly positively corr

SUBMITTER: Liao G 

PROVIDER: S-EPMC7788711 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature