University of Tasmania
Browse

File(s) under permanent embargo

Models for gibberellic acid transport and enzyme production and transport in the aleurone layer of barley

journal contribution
posted on 2023-05-18, 15:45 authored by O'Brien, R, Fowkes, N, Andrew BassomAndrew Bassom
Gibberellins are growth hormones produced in the embryo of grain released during germination. They promote growth through the production of enzymes in the aleurone layer surrounding the endosperm. These enzymes then diffuse into the endosperm and produce the sugars required by the growing acrospire. Here we model the transport of gibberellins into and along the aleurone layer, the consequent production of enzymes, and their transport into the endosperm. Simple approximate solutions of the governing equations are obtained which suggest that the enzymes are released immediately behind a gibberellin front which travels with almost constant speed along the aleurone layer. The model also suggests that this propagation speed is determined primarily by conditions near the scutellum–aleurone junction, which may enable the embryo to actively control the germination process.

History

Publication title

Journal of Theoretical Biology

Volume

267

Pagination

15-21

ISSN

0022-5193

Department/School

School of Natural Sciences

Publisher

Academic Press Ltd Elsevier Science Ltd

Place of publication

24-28 Oval Rd, London, England, Nw1 7Dx

Rights statement

Copyright 2010 Elsevier Ltd.

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in the mathematical sciences

Usage metrics

    University Of Tasmania

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC