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Related Experiment Video

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Quantitative Analysis of Dietary Vitamin A Metabolites in Murine Ocular and Non-Ocular Tissues Using High-Performance Liquid Chromatography

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Alpha-tocopherol: a multifaceted molecule in plants.

Sergi Munné-Bosch¹

¹Departament de Biologia Vegetal, Facultat de Biologia, Universitat de Barcelona, Avinguda Diagonal 645, E-08028 Barcelona, Spain.

Vitamins and Hormones

|July 14, 2007

Summary

Alpha-tocopherol, a form of vitamin E, is crucial for plant health, protecting membranes and aiding in antioxidant defense. It also influences plant signaling pathways by regulating cell redox balance.

Area of Science:

Plant Biology
Biochemistry
Antioxidant Research

Background:

Alpha-tocopherol, a lipophilic antioxidant from the vitamin E group, is synthesized in plant chloroplasts.
It is vital for maintaining photosynthetic membrane integrity and providing photo- and antioxidant protection.

Purpose of the Study:

To elucidate the multifaceted roles of alpha-tocopherol in plants.
To investigate its functions in membrane integrity, antioxidant defense, and cellular signaling.

Main Methods:

The study focuses on the biochemical functions and effects of alpha-tocopherol in plant systems.
Analysis of tocopherol-deficient plants provides insights into its signaling roles.

Main Results:

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Last Updated: Jul 13, 2026

Quantitative Analysis of Dietary Vitamin A Metabolites in Murine Ocular and Non-Ocular Tissues Using High-Performance Liquid Chromatography

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A Rapid and Specific Microplate Assay for the Determination of Intra- and Extracellular Ascorbate in Cultured Cells

A Rapid and Specific Microplate Assay for the Determination of Intra- and Extracellular Ascorbate in Cultured Cells

Published on: April 11, 2014

Alpha-tocopherol scavenges radicals, preventing lipid peroxidation and protecting membranes from singlet oxygen.

It regulates membrane rigidity and fluidity, crucial for optimal membrane function.

Evidence suggests alpha-tocopherol influences plant cellular signaling, potentially via redox homeostasis and modulation of oxylipin formation.

Conclusions:

Alpha-tocopherol is essential for plant antioxidant defense and membrane integrity.
Its role extends to cellular signaling, impacting phytohormone production and redox balance.