FaPAO5 regulates Spm/Spd levels as a signaling during strawberry fruit ripening.

ABSTRACT: Polyamines are important for non-climacteric fruit ripening according to an analysis of the model plant strawberry. However, the molecular mechanism underlying the polyamine accumulation during ripening has not been fully elucidated. In this study, an examination of our proteome data related to strawberry fruit ripening revealed a putative polyamine oxidase 5, FaPAO5, which was localized in the cytoplasm and nucleus. Additionally, FaPAO5 expression levels as well as the abundance of the encoded protein continually decreased during ripening. Inhibiting FaPAO5 expression by RNAi promoted Spd, Spm, and ABA accumulation while inhibited H₂O₂ production, which ultimately enhanced ripening as evidenced by the ripening-related events and corresponding gene expre

SUBMITTER: Mo A 

PROVIDER: S-EPMC7189608 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature