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Updated: May 4, 2026

Peptide-derived Method to Transport Genes and Proteins Across Cellular and Organellar Barriers in Plants
Published on: December 16, 2016
Peptide transport by germinating barley embryos: Uptake of physiological di- and oligopeptides
1Department of Botany, Science Laboratories, University of Durham, South Road, DH1 3LE, Durham, U.K..
Abstract:
The uptake of a variety of physiological di- and oligopeptides by germinating barley (Hordeum vulgare L.) embryos is described. Peptides as large as pentaalanine can be absorbed. Evidence is presented suggesting the peptides are absorbed intact and subsequently undergo rapid intracellular hydrolysis. Uptake shows stereospecificity. The transport of peptides is generally faster than the transport of amino acids, making it likely that the former could play an important role in the mobilization of the protein storage reserves during germination. The peptide transport system in barley is compared with similar systems from other groups of organisms.
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