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Related Experiment Videos

Methionine metabolism in apple tissue.

D P Murr

    Experientia
    |December 15, 1977
    PubMed
    Summary

    Researchers identified a new compound in apples, a methionine-pyridoxal Schiff base, formed from methionine or 5'-methylthioadenosine. This finding offers insights into the plant hormone ethylene biosynthesis.

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    Effect of 2,4-Dinitrophenol on Auxin-induced Ethylene Production and Auxin Conjugation by Mung Bean Tissue.

    Plant physiology·1974

    Area of Science:

    • Plant Biochemistry
    • Metabolomics
    • Ethylene Biosynthesis

    Background:

    • Ethylene is a crucial plant hormone regulating growth and development.
    • Understanding ethylene biosynthesis pathways is vital for agricultural applications.
    • Key intermediates in ethylene production remain incompletely characterized.

    Purpose of the Study:

    • To identify a novel metabolic intermediate in apple tissue.
    • To elucidate the role of methionine metabolism in ethylene production.
    • To investigate the formation of a specific Schiff base compound.

    Main Methods:

    • Apple tissue incubation with radiolabeled methionine or 5 methylthioadenosine.
    • Isolation and characterization of metabolic intermediates.
    • Tentative structural identification of the isolated compound.

    Main Results:

    • A unique metabolic intermediate was isolated from treated apple tissues.
    • The intermediate was tentatively identified as a methionine-pyridoxal Schiff base.
    • Its formation is linked to the precursors methionine and 5 methylthioadenosine.

    Conclusions:

    • The identified methionine-pyridoxal Schiff base is a key intermediate in apple metabolism.
    • This compound's formation provides a potential link between methionine metabolism and ethylene biosynthesis.
    • Further research can explore its precise role in regulating ethylene production.

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