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Role of Ethylene in Phytochrome-induced Anthocyanin Synthesis

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Journal Planta
Specialty Biology
Date 2014 Jan 30
PMID 24474400
Citations 11
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Abstract

Synthesis of anthocyanin pigments in etiolated cabbage seedlings is influenced by ethylene at concentrations higher than 10 ppb, and etiolated seedlings produce sufficient ethylene to influence their anthocyanin synthesis. When escape of endogenous ethylene from this tissue is enhanced by means of hypobaric treatment, anthocyanin synthesis is accelerated. Stimulation of anthocyanin synthesis by brief red illumination is completely prevented by applied ethylene and indoleacetic acid inhibits anthocyanin synthesis by stimulating ethylene production. Red light reduces endogenous as well as auxin-induced ethylene production and there is a close correlation between light-induced inhibition of ethylene synthesis and stimulation of anthocyanin formation. We suggest that in part photo-induced anthocyanin synthesis is due to a lowered ethylene content in light-treated tissue.

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