Violet LED light-activated MdHY5 positively regulates phenolic accumulation to inhibit fresh-cut apple fruit browning.

ABSTRACT: Fresh-cut fruit browning severely affects the appearance of fruit. Light treatment can effectively inhibit fresh-cut apple fruit browning, but the regulatory mechanism remains unknown. Here, we discovered that violet LED (Light-Emitting-Diode) light treatment significantly reduced fresh-cut apple fruit browning. Metabolomic analysis revealed that violet LED light treatment enhanced the phenolic accumulation of fresh-cut apple fruit. Transcriptomic analysis showed that the expression of phenolic degradation genes POLYPHENOL OXIDASE (MdPPO) and PEROXIDASE (MdPOD) was reduced, and the expression of phenolic synthesis gene PHENYLALANINE AMMONIA LYASE (MdPAL) was activated by violet LED light treatment. Moreover, two ELONGATED HYPOCOTYL 5 (MdH

SUBMITTER: Jin J 

PROVIDER: S-EPMC11739620 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature