Synthesis of Salt Soluble Proteins in Barley. Pulse-Labeling Study of Grain Filling in Liquid-Cultured Detached Spikes

Nanna Henriette Giese, Jørn Hejgaard

    Research output: Contribution to journalJournal articlepeer-review

    Abstract

    The accumulation of salt-soluble proteins in the endosperm of developing barley (Hordeum vulgare L.) grains was examined. Detached spikes of barley were cultured at different levels of nitrogen nutrition and pulse-labeled with [14C] sucrose at specific times after anthesis. Proteins were extracted from isolated endosperms and separated by sodium dodecyl sulfate polyacrylamide gel electrophoresis and crossed immunoelectrophoresis. Fluorography revealed an early, middle and late synthesis of specific proteins during grain filling. Synthesis of proteins appearing at the later stages responded to increased nitrogen nutrition. Two major components, β-amylase and protein Z in particular, had a synthesis profile almost identical to that of the endosperm storage protein, hordein.
    Original languageEnglish
    JournalPlanta
    Volume161
    Issue number2
    Pages (from-to)172-177
    ISSN0032-0935
    DOIs
    Publication statusPublished - 1984

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