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Article

Novel roles for the polyphenol oxidase enzyme in secondary metabolism and the regulation of cell death in walnut.

Plant physiology - 1 Mar 2014

Araji Soha, Grammer Theresa A, Gertzen Ross, Anderson Stephen D, Mikulic-Petkovsek Maja, Veberic Robert, Phu My L, Solar Anita, Leslie Charles A, Dandekar Abhaya M, Escobar Matthew A

Abstract excerpt

The enzyme polyphenol oxidase (PPO) catalyzes the oxidation of phenolic compounds into highly reactive quinones. Polymerization of PPO-derived quinones causes the postharvest browning of cut or bruised fruit, but the native physiological functions of PPOs in undamaged, intact plant cells are not...

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Identifiers

PMID: 24449710
DOI: 10.1104/pp.113.228593
PMCID: PMC3938613

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 4 Sept 2026. Prepared record publication-24449710-2026-09-04.2. Manifest publication-graph-cohort-2026-09-04.2.

Source receipt: PubMed via Helena Literature Corpus, retrieved 4 Sept 2026.

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